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Progress in research on metal-based materials in stabilized Zn anodes

Rare Metals 2024年第1期43卷 20-40页

作者： Le Li shao-feng jia Ming-Hui Cao Yong-Qiang ji Heng-Wei Qiu Dan Zhang Shaanxi Key Laboratory of Industrial Automation School of Mechanical EngineeringShaanxi University of TechnologyHanzhong 723001China School of Electronic and Information Engineering Qingdao UniversityQingdao 266071China State Key Laboratory for Artifcial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua UniversityBeijing 100084China Shaanxi Key Laboratory of Catalysis School of Chemistry and Environment ScienceShaanxi University of TechnologyHanzhong 723001China

Aqueous zinc-ion batteries(ZIBs) combine the benefits of metallic Zn anodes with those of aqueous electrolytes and are well suited for large-scale energy storage because of their inherent high safety, cost-effectiveness, and eco-friendliness. Currently, the practical application of such batteries is hindered by the poor cycling performance of Zn anodes due to uncontrolled dendrite formation and severe side reactions, although recent reports suggest that these problems can be mitigated through the modification of Zn anodes with metal-based *** that the mechanisms of improving Zn deposition and the structural evolution of metal-based materials have not been systematically reviewed, we herein systematically overview the metal-based materials used to stabilize Zn anodes, starting with a brief summary of the anode working mechanism and the challenges faced by stabilized Zn anodes. Subsequently, the design principles of Zn anodes stabilized by metal-based materials and the related recent progress are reviewed, and the key challenges and perspectives for the future development of such Zn anodes are proposed.

关键词： Zinc-ion batteries(ZIBs) Zn anode Metalbased materials Alloying metal Stabilized Zn anodes

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Understanding the Thermal Impedance of Silicone Rubber/Hexagonal Boron Nitride Composites as Thermal Interface Materials

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Chinese Journal of Polymer Science 2024年第3期42卷 352-363,I0008页

作者： Yuan ji Shi-Da Han Hong Wu shao-Yun Guo feng-Shun Zhang jian-Hui Qiu The State Key Laboratory of Polymer Materials Engineering Sichuan Provincial Engineering Laboratory of Plastic/Rubber Complex Processing TechnologyPolymer Research InstituteSichuan UniversityChengdu 610065China Institute of Chemical Materials China Academy of Engineering PhysicsMianyang 621900China Department of Mechanical Engineering Faculty of Systems Science and TechnologyAkita Prefectural UniversityAkita 015-0055Japan

Silicone rubber(SR) composites are most widely used as thermal interface materials(TIMs) for electronics heat dissipation. Thermal impedance as the main bottleneck limiting the performance of TIMs is usually neglected. Herein, the thermal impedance of SR composites loaded with different levels of hexagonal boron nitride(h-BN) as TIMs was elaborated for the first time by the ASTM D 5470 standard test and finite element analysis. It was found that elastic modulus and surface roughness of SR composites increased with the increase of h-BN content, indicating that the conformity was reduced. When the assembly pressure was 0.69 MPa, there existed an optimal h-BN content at which the contact resistance was minimum(0.39 K·cm^(2)·W^(-1)). Although the decreased bond line thickness(BLT) by increasing the assembly pressure was beneficial to reduce the thermal impedance, the proper assembly pressure should be selected to prevent the warpage of the contact surfaces and the increase in contact resistance, according to the compression properties of the SR composites. This study provides valuable insights into fabrication of high-performance TIMs for modern electronic device applications.

关键词： Thermal interface materials Hexagonal boron nitride Thermal impedance Surfaces

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Abscisic acid-dependent PMT1 expression regulates salt tolerance by alleviating abscisic acid-mediated reactive oxygen species production in Arabidopsis

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Journal of Integrative Plant Biology 2022年第9期64卷 1803-1820页

作者： Qi Yu He jian feng jin He Qiang Lou feng feng Dang ji Ming Xu shao jian Zheng jian Li Yang State Key Laboratory of Plant Physiology and Biochemistry College of Life SciencesZhejiang UniversityHangzhou310058 China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou311300 China State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural UniversityGuangzhou510642 China

Phosphocholine(PCho)is an intermediate metabolite of nonplastid plant membranes that is essential for salt ***,how PCho metabolism modulates response to salt stress remains ***,we characterize the role of phosphoethanolamine N-methyltransferase 1(PMT1)in salt stress tolerance in Arabidopsis thaliana using a T-DNA insertional mutant,geneediting alleles,and complemented *** pmt1 mutants showed a severe inhibition of root elongation when exposed to salt stress,but exogenous ChoCl or lecithin rescued this ***1 also displayed altered glycerolipid metabolism under salt stress,suggesting that glycerolipids contribute to salt ***,pmt1 mutants exhibited altered reactive oxygen species(ROS)accumulation and distribution,reduced cell division activity,and disturbed auxin distribution in the primary root compared with wild-type *** show that PMT1 expression is induced by salt stress and relies on the abscisic acid(ABA)signaling pathway,as this induction was abolished in the aba2-1 and pyl112458 ***,ABA aggravated the salt sensitivity of the pmt1 mutants by perturbing ROS distribution in the root *** together,we propose that PMT1 is an important phosphoethanolamine N-methyltransferase participating in root development of primary root elongation under salt stress conditions by balancing ROS production and distribution through ABA signaling.

关键词： abscisic acid(ABA) oxidative stress plasma membrane phosphoethanolamine N-methyltransferase phospholipid metabolism salt stress

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High-Sensitivity Detection of Fruit Tree Viruses UsingBacterial Magnetic Particles

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Journal of Integrative Plant Biology 2009年第4期51卷 409-413页

作者： ji-feng Chen Ying Li Zhen-Fang Wang ji-Lun Li Wei jiang shao-Hua Li Institute of Botany the Chinese Academy of Sciences Beijing 100093 China Department of Microbiology and Immunology China Agricultural University Beijing 100094 China Department of Bioengineering Zhengzhou University Zhengzhou 450001 China Wuhan Botanical Garden the Chinese Academy of Sciences Wuhan 430074 China

Prunus necrotic ring spot virus （PNRSV） and grapevine fanleaf virus （GFLV） were detected by fluoroimmunoassay using bacterial magnetic particles （BMPs）, and a double antibody sandwich enzyme linked immunosorbent assay （DAS-ELISA）. For the fluoroimmunoassay, fluorescein isothiocyanate labeled anti-PNRSV antibody or anti-GFLV antibody was conjugated onto BMPs of Magnetospirillum gryphiswaldense MSR-1. With this method, a very low minimum antigen concentration （1×10^6 dilution of the original sample concentration） could be detected. Using DAS-ELISA, the minimum antigen detection concentration was the original sample concentration. Thus, comparing these two methods, a BMP-based method could increase the sensitivity up to six orders of magnitude （10^6） higher than an ELISA-based method of detection PNRSV and GFLV.

关键词： bacterial magnetic particle detection sensitivity ELISA fluoroimmunoassay grapevine fanleaf virus prunus necrotic ring spot virus.

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A sensorless efficiency test system for a high-speed permanent magnet synchronous motor

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Journal of Modern Power Systems and Clean Energy 2019年第2期7卷 390-399页

作者： Li ji Yixiang shao Sujie GAO College of Energy and Electrical Engineering Hohai UniversityNanjing 210098China NARI Group Corporation(State Grid Electric Power Research Institute) Nanjing 211102China State Grid Xin Yuan Company Limited Beijing 100000China

We present a sensorless efficiency test system with energy recovery for a high-speed permanent magnet synchronous motor(PMSM). In the system, two identical high-speed PMSMs are used as the motor under test(MUT)and the load machine(LM),respectively.A new sensorless vector control(VC) method based on a hypothetical reference frame is presented to control both the MUT and the ***,a regenerating unit is used to implement energy circulation to save *** were carried out on a prototype, with a digital controller based on the TMS320 F28335, to verify the adequacy of the sensorless VC *** a result,the efficiency test system achieves the load test at the speed of 21000 r/min without any reduction equipment. During the test, the energy regenerated by the LM could be fed back to the MUT by the regenerating unit, and 81.31% electrical power was *** addition, with the proposed sensorless VC method,both the MUT and the LM can work at i_d = 0 without a position sensor.

关键词： Distributed generation High-speed permanent magnet synchronous motor(PMSM) Sensorless control Energy saving

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Reversible Plasticity Shape Memory Effect in SEBS/Crystallizable Paraffin: Influence of Paraffin Content

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Chinese Journal of Polymer Science 2022年第12期40卷 1697-1705,I0011页

作者： shao-Quan Zhao jia-Chun feng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China Yiwu Research Institute of Fudan University Yiwu 322000China

Polymers with reversible plasticity shape memory effect(RPSME)have attracted considerable attention due to their simple programming and large ***,the exact mechanisms of RPSME are still not thoroughly *** this work,the RPSME of SEBS/crystallizable paraffin was investigated by comparatively analyzing the performances and microstructures of samples with different paraffin *** was found the shape fixing ratios(Rfs)of samples increased with the paraffin content,and interestingly,a significant improvement in Rf was observed when the paraffin content exceeded 60 wt%.Tensile test results showed that the deformation characteristics of samples changed from elastic to plastic as the paraffin content increased above 60 wt%.By exploring the crystallization behaviors of paraffin in various SEBS/paraffin samples,it was revealed that the microstructures of SEBS/paraffin were different when the paraffin content was below 50 wt%and above 60 wt%.In samples with low paraffin content(below 50 wt%),nearly all paraffin was co-crystallized with ethylene-co-butylene(EB)chains and its crystallization was severely restricted;while in samples with high paraffin content(above 60 wt%),“excess”paraffin appeared and this part of paraffin crystallized on the template of the EB/paraffin co-crystals,which might be responsible for the elastic-to-plastic transition and the sharp increase in *** on the above results,a possible structural model was proposed to explain the exact mechanism of RPSME in SEBS/paraffin.

关键词： Reversible plasticity shape memory effect Poly(styrene-b-(ethylene-co-butylene)-b-styrene) Crystallizable paraffin Paraffin content

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Selective killing effect of oxytetracycline,propafenone and metamizole on A549 or Hela cells

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Chinese Journal of Cancer Research 2013年第6期25卷 662-670页

作者： jinhui shao Guihua feng Department of Histology and Embryology School of MedicineHubei University of Art and Science

Objective： To determine the selective killing effect of oxytetracycline, propafenone and metamizole on A549 or Hela cells. Methods： Proliferation assay, lactate dehydrogenase （LDH） assay, apoptosis detecting, flow cytometry and western blot were performed. Results： It was found that treatment with propafenone at the concentration of 0.014 g/L or higher for 48 h could induce apoptosis in Hela cells greatly, while it was not observed in oxytetracycline and metamizole at the concentration of 0.20 g/L for 48 h. Oxytetracycline, propafenone and metamizole all displayed evident inhibitory effects on the proliferation of A549 cells. The results of LDH assay demonstrated that the drugs at the test range of concentration did not cause necrosis in the cells. Propafenone could elevate the protein level of P53 effectively （P〈0.01）. Conclusions： Oxytetracycline, propafenone and metamizol （dipyrone） all displayed evident inhibitory effects on the proliferation of A549 cells. Propafenone also displayed evident inhibitory effects on the proliferation of Hela cells.

关键词： Cancer drug oxytetracycline propafenone metamizol

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Analysis of Pulse Signals Based on Array Pulse Volume

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Chinese Journal of Integrative Medicine 2019年第2期25卷 103-107页

作者： CUI ji TU Li-ping ZHANG jian-feng ZHANG shao-liang ZHANG Zhi-feng XU jia-tuo School of Basic Medicine Shanghai University of Traditional Chinese Medicine Interdisciplinary Science Institute Shanghai University of Traditional Chinese Medicine

Objective: To collect and analyze multi-dimensional pulse diagram features with the array sensor of a pressure profile system(PPS) and study the characteristic parameters of the new multi-dimensional pulse diagram by pulse diagram analysis technology. Methods: The pulse signals at the Guan position of left wrist were acquired from 105 volunteers at the Shanghai University of Traditional Chinese Medicine. We obtained the pulse data using an array sensor with 3×4 channels. Three dimensional pulse diagrams were constructed for the validated pulse data, and the array pulse volume(APV) parameter was computed by a linear interpolation algorithm. The APV differences among normal pulse(NP), wiry pulse(WP) and slippery pulse(SP) were analyzed using one-way analysis of variance. The coefficients of variation(CV) were calculated for WP, SP and NP. Results: The APV difference between WP and NP in the 105 volunteers was statistically significant(6.26±0.28 vs. 6.04±0.36, P=0.048), as well as the difference between WP and SP(6.26±0.28 vs. 6.07±0.46, P=0.049). However, no statistically significant difference was found between NP and SP(P=0.75). WP showed a similar CV(4.47%) to those of NP(5.96%) and SP(7.58%). Conclusion: The new parameter APV could differentiate between NP or SP and WP. Accordingly, APV could be considered an useful parameter for the analysis of array pulse diagrams in Chinese medicine.

关键词： pulse signal array pulse volume pulse sensor Chinese medicine

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The Maximum Principle for One Kind of Stochastic Optimization Problem and Application in Dynamic Measure of Risk

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Acta Mathematica Sinica,English Series 2007年第12期23卷 2189-2204页

作者： shao Lin ji Zhen WU School of Mathematics and Systems Science Shandong University Jinan 250100 P. R. China

The authors get a maximum principle for one kind of stochastic optimization problem motivated by dynamic measure of risk. The dynamic measure of risk to an investor in a financial market can be studied in our framewor... 详细信息

关键词： backward stochastic differential equation perturbation method Ekeland's variational principle dynamic measure of risk

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Excavation-induced microseismicity: microseismic monitoring and numerical simulation

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第6期13卷 445-460页

作者： Nu-wen XU Chun-an TANG Hong LI feng DAI Ke MA jing-dong shao ji-chang WU State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resources and Hydropower Siehuan UniversityChengdu 610065China Institute o fRock Instability and Seismicity Research Dalian University of TechnologyDalian 116024China HydroChina Chengdu Engineering Corporation Chengdu 610072China China Guodian Dadu River Dagangshan Hydropower Development Co. Ltd.Ya'an 625409China

The volume of influence of excavation at the right bank slope of Dagangshan Hydropower Station, southwest China, is essentially determined from microseismic monitoring, numerical modeling and conventional measurements as well as in situ observations. Microseismic monitoring is a new application technique for investigating microcrackings in rock slopes. A micro- seismic monitoring network has been systematically used to monitor rock masses unloading relaxation due to continuous exca- vation of rock slope and stress redistribution caused by dam impoundment later on, and to identify and delineate the potential slippage regions since May, 2010. An important database of seismic source locations is available. The analysis of microseismic events showed a particular tempo-spatial distribution. Seismic events predominantly occurred around the upstream slope of 1180 m elevation, especially focusing on the hanging wall of fault XL316-1. Such phenomenon was interpreted by numerical modeling using RFPA-SRM code （realistic failure process analysis-strength reduction method）. By comparing microseismic activity and results of numerical simulation with in site observation and conventional measurements results, a strong correlation can he obtained between seismic source locations and excavation-induced stress distribution in the working areas. The volume of influence of the rock slope is thus determined. Engineering practices show microseismic monitoring can accurately diagnose magnitude, intensity and associated tempo-spatial characteristics of tectonic activities such as faults and unloading zones. The integrated technique combining seismic monitoring with numerical modeling, as well as in site observation and conventional surveying, leads to a better understanding of the internal effect and relationship between microseismic activity and stress field in the right bank slope from different perspectives.

关键词： Microseismic monitoring Rock slope Numerical simulation Stability analysis Dagangshan Hydropower Station

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