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Enhancing anion conductivity in a highly alkali-stable eta topologic Cu(Ⅰ) framework via strong electrostatic repulsion

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Science China Chemistry 2025年

作者： Xiaolu Wang Shaohui Guo Chao suo Fuqiang Zhang Junhao Wang Wenjing Wang Daqiang Yuan Linfeng Liang Xianming Zhang College of Chemistry Taiyuan University of Technology Institute of Crystalline Materials Shanxi University School of Chemistry and Materials Science Shanxi Normal University State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Metal-organic frameworks （MOFs） based on anion exchange membranes （AEMs） have garnered considerable interest,particularly for their potential to enhance ion conductivity by pre-introducing anions into *** approach is recognized as straightforward and effective for improving ion ***,developing high-performance AEMs is limited by the inherent instability and low resistance of *** study presents a novel 1,3,5-triazineμ3-bridged neutral Cu（I） framework,designated SXU-120 （where SXU represents Shanxi University）.This framework is synthesized using melamine,a widely available industrial product,as the starting material,achieving a high space-time yield exceeding 1.1 kg *** organic ligands and metal ions in SXU-120 are 3-connected,forming a rare eta topology with the point symbol 8～***-120 exhibits exceptional stability,even in a 10 M KOH solution,due to its high density of uncoordinated–NH2and carbonyl ***,the framework’s unique one-dimensional channels,characterized by their electronegativity,interact electrostatically with OH-ions,thereby accelerating OH-ion transfer along these ***,the OH-conductivity of this material reaches an impressive 0.49 S cm-1at 90°C under full humidity for 100 h,representing the highest OH-conductivity reported for MOF-based conductors to *** properties make SXU-120 a promising candidate for efficient AEM materials in next-generation industrial applications.

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Early and late long--term effects of vasectomy on Zn,Cd, and Cu levels in prostatic fluid and serum

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Asian Journal of Andrology 2000年第2期2卷 121-124页

作者： Zeng-NanMO Wei-HuaHUANG JianCHEN XunHUANG Shi-chunzhang DepartmentofUrology FirstAffiliatedHospitalofGuangxiMedicalUniversityNanning530027China DepartmentofUrology.SecondAffiliatedHospital DepartmentofUrology FirstAffiliatedHospitalofHunanMedicalUniversityChangsha410011.China

Aim: To evaluate the early and late long-term effects of vasectomy on the serum and prostatic fluid trace ***: In 37 vasectomized and 25 non-vasectomized (control) men, the Zn, Cd and Cu levels in the serum andprostatic fluid were measured by means of inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Re-suits: No significant difference was found in the prostatic Zn, Cd and Cu levels between the vasectomized and controlgroup. The Zn level in the semm were significantly lower in the vasectomized men than in the controls (11.04 and 13.54 umol/L, respectively; P < 0.05), while the serum Cd and Cu levels were not significantly different between thetwo groups. Conclusion: Vasectomy may decrease the serum, but not the prostatic Zn levels. Its pathophysiologicalsignificance is worthy of further investigation.

关键词： vasectomy serum prostate zinc cadmium copper trace elements sterilization

基于SBAS-InSAR和光学遥感的天津市北部山区潜在滑坡识别研究

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灾害学 2025年第1期40卷 30-35页

作者：王勇邢振涛李锁闫勇司甜天津城建大学地质与测绘学院天津300384 天津市地质工程勘测设计院有限公司天津300191

以天津市北部山区为研究对象,开展潜在滑坡识别研究,利用差分干涉测量短基线集时序分析技术(SBAS-InSAR)处理2018-01—2022-08的56景Sentinel-1A数据,并结合2018—2022年的Landsat8光学遥感影像,分析形变与光学遥感影像特征以及NDVI,筛... 详细信息

以天津市北部山区为研究对象,开展潜在滑坡识别研究,利用差分干涉测量短基线集时序分析技术(SBAS-InSAR)处理2018-01—2022-08的56景Sentinel-1A数据,并结合2018—2022年的Landsat8光学遥感影像,分析形变与光学遥感影像特征以及NDVI,筛选出潜在滑坡区域。研究结果表明:基于SBAS-InSAR技术识别的天津北部山区的形变较大区域有20处,使用光学遥感影像结合各发育环境要素进行处理确定的区域有19处,其中5处经两种技术确认为滑坡隐患,通过对该5处沉降信息进行识别分析,该5处区域最大年形变速率可达-12 mm/a,需要进行重点监测预警,使用两种技术结合对滑坡隐患区域进行识别可以有效地提高识别准确度,为天津北部山区灾害监测提供新的方式。

关键词：潜在滑坡 SBAS-InSAR 光学遥感影像天津市北部山区

One-dimensional analysis of the coupling between diffusion and deformation in a bilayer electrode

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Acta Mechanica Sinica 2019年第3期35卷 589-599页

作者： Yaohong suo Fuqian Yang School of Mechanical Engineering and Automation Fuzhou UniversityFuzhou 350108China Department of Chemical and Materials Engineering University of KentuckyLexingtonKY 40506USA State Key Lab for Strength and Vibration of Mechanical Structures School of AerospaceXi'an Jiaotong UniversityXi'an 710049China

Diffusion-induced deformation during electrochemical cycling plays an important role in determining structural durability of the electrodes in lithium-ion batteries. In this work, we investigate the coupling between diffusion and stress in the boundary conditions of a bilayer electrode, and analyze the evolution of the lithium concentration and stress. Numerical simulations are performed under four different combinations of the boundary conditions between diffusion and mechanical deformation. The stress distributes uniformly in the bilayer electrode for all four cases. The concentration of lithium at the interface is discontinuous for the cases with fixed boundary conditions and is continuous for the cases with a surface at stress-free state. For the bilayer electrode fixed at both surfaces, the magnitude of the stress in the bilayer electrode increases with the increase of the diffusion time. This study reveals the importance of incorporating the coupling between diffusion and stress in the boundary condition in the analysis of the structural durability of lithium-ion batteries and in the design of multilayered and/or gradient electrodes.

关键词： Diffusion-induced deformation Bilayer electrode Lithium-ion battery

Robust PolInSAR optimal interferogram estimation method based on generalized scattering vector

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Journal of Systems Engineering and Electronics 2017年第3期28卷 457-471页

作者： Zhiyong suo Ming Li National Lab of Radar Singal Processing Xidian UniversityXi’an 710071China Beijing Aerospace Automatic Control Institute Beijing 100854China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing 100854China

For the polarimetric synthetic aperture radar interferometry (PoIInSAR) processing, it is necessary to coregister all the images, including the coregistration of polarimetric SAR images and the coregistration of interferometric SAR images. Otherwise, the performance of the estimated optimal interferograms will be deteriorated. A generalized scattering vector (GSV) model is proposed to execute the PoIInSAR optimal interferograms estimation. The generalized scattering vector is constructed by the Pauli scattering vectors of the processing pixel and the surrounding pixels. Even though there are coregistration errors, all the polarimetric information of the current processing pixel is entirely included in the generalized scattering vector. Therefore, the GSV-based method can automatically recover the optimal scattering mechanisms of the processing pixel with coregistration errors either in interferoemetric channels or polarimetric channels. Theoretical analysis and processing results of simulated PoISARPro data and real PALSAR data validate the effectiveness and correctness of the proposed method.

关键词： polarimetric synthetic aperture radar interferometry (PoIInSAR) generalized scattering vector (GSV) optimal interferogram coregistration error Pauli basis

A Quasiconcavity Property for the Heat Equation in a Convex Ring

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Communications in Mathematics and Statistics 2020年第4期8卷 453-462页

作者： Jingjing suo School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026People’s Republic of China

We give an exposition of a result of Borell(Commun Math Phys 86:143-147,1982)that the probability function that Brownian motion hits the inner boundary before time t and before hitting the outer boundary is a space-ti... 详细信息

关键词： Heat equation Quasiconcavity Maximum principle Comparison method

VISCOELASTICITY AND POROELASTICITY IN ELASTOMERIC GELS

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Acta Mechanica Solida Sinica 2012年第5期25卷 441-458页

作者： Yuhang Hu Zhigang suo (School of Engineering and Applied Sciences Kavli Institute for Nanobio Science and Technology Harvard University Cambridge MA 02138 USA)

An elastomeric gel is a mixture of a polymer network and a solvent. In response to changes in mechanical forces and in the chemical potential of the solvent in the environment, the gel evolves by two concurrent molecular processes： the conformational change of the network, and the migration of the solvent. The two processes result in viscoelasticity and poroelasticity, and are characterized by two material-specific properties： the time of viscoelastic relaxation and the effective diffusivity of the solvent through the network. The two properties define a material- specific length. The material-specific time and length enable us to discuss macroscopic observations made over different lengths and times, and identify limiting conditions in which viscoelastic and poroelastic relaxations have either completed or yet started. We formulate a model of homogeneous deformation, and use several examples to illustrate viscoelasticity-limited solvent migration, where the migration of the solvent is pronounced, but the size of the gel is so small that the rate of change is limited by viscoelasticity. We further describe a theory that evolves a gel through inhomogeneous states. Both infinitesimal and finite deformation are considered.

关键词： elastomer gel viscoelasticity poroelasticity creep stress relaxation

A FINITE ELEMENT METHOD FOR DIELECTRIC ELASTOMER TRANSDUCERS

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Acta Mechanica Solida Sinica 2012年第5期25卷 459-466页

作者： Shaoxing Qu Zhigang suo Department of Engineering Mechanics Zhejiang UniversityHangzhou 310027China Soft Matter Research Center(SMRC) Zhejiang UniversityHangzhou 310027China School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA

We present a finite element method for dielectric elastomer （DE） transducers based on the nonlinear field theory of DE. The method is implemented in the commercial finite element software ABAQUS, which provides a large library functions to describe finite elasticity. This method can be used to solve electromechanical coupling problems of DE transducers with complex configurations and under inhomogeneous deformation.

关键词： finite element method dielectric elastomer electromechanical coupling

Influence of Alloying Element Addition on Cu–Al–Ni High-Temperature Shape Memory Alloy without Second Phase Formation

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Acta Metallurgica Sinica(English Letters) 2016年第9期29卷 884-888页

作者： Xin Zhang Qing-suo Liu School of Materials Science and Engineering Tianjin University of TechnologyTianjin 300384China

In this study, the effects of rare earth Gd and Fe elements on the microstructure, the mechanical properties and the shape memory effect of Cu-11.9Al-3.8Ni high-temperature shape memory alloy were investigated by optical microscopy, scanning electron microscopy, X-ray diffraction and compression test. The microstructure observation results showed that both Cu-11.9Al-3.8Ni-0.2Gd and Cu-11.9Al-3.8Ni-2.0Fe-0.2Gd alloys displayed the fine grain and single- phase fll1 martensite, and their grain size was about several hundred microns, one order of the magnitude smaller than that of Cu-11.9Al-3.8Ni alloy. The compression test results proved that the mechanical properties of Cu-11.9Al-3.8Ni alloy were dramatically improved by alloying element additions due to grain refinement and solid solution strengthening, and the compressive fracture strains of Cu-11.9Al-3.8Ni-0.2Gd and Cu-ll.9Al-3.8Ni-2.0Fe-0.2Gd were 12.0% and 17.8%, respectively. When the pre-straln was 10%, the reversible strains of 5.4% and 5.9% were obtained for Cu-11.9Al-3.8Ni- 0.2Gd and ***-2.0Fe-0.2Gd alloys after being heated to 500 ℃ for 1 rain, and the obvious two-way shape memory effect was also observed.

关键词： High-temperature shape memory alloys Shape memory effect Microstructure Cu-Al-Nialloy