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materials and structural design for preferable Zn deposition behavior toward stable Zn anodes

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Smartmat 2024年第1期5卷 1-37页

作者： Qinghe Cao Yong Gao Jie Pu Abdelnaby m.Elshahawy Cao guan Key Laboratory of Flexible Electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical UniversityNingboChina Institute of Flexible Electronics Northwestern Polytechnical UniversityXi'anChina Department of Physics Faculty of ScienceAssiut UniversityAssiutEgypt

Benefiting from the high capacity of Zn metal anodes and intrinsic safety of aqueous electrolytes,rechargeable Zn ion batteries(ZIBs)show promising application in the post‐lithium‐ion period,exhibiting good safety,low cost,and high energy ***,its commercialization still faces problems with low Coulombic efficiency and unsatisfied cycling performance due to the poor Zn/Zn2+reversibility that occurred on the Zn *** improve the stability of the Zn anode,optimizing the Zn deposition behavior is an efficient way,which can enhance the subsequent striping efficiency and limit the dendrite *** Zn deposition is a controlled kinetics‐diffusion joint process that is affected by various factors,such as the interaction between Zn2+ions and Zn anodes,ion concentration gradient,and current *** this review,from an electrochemical perspective,we first overview the factors affecting the Zn deposition behavior and summarize the modification ***,strategies proposed for interfacial modification and 3D structural design as well as the corresponding mechanisms are ***,the existing challenges,perspectives on further development direction,and outlook for practical applications of ZIBs are proposed.

关键词： 3D structuraldesign interfacialmodification long‐term stability Znanode Zndeposition behavior

High-current pulsed electron beam modification on microstructure and performance of Cu/CuW diffusion bonding joints

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Rare metals 2024年第6期43卷 2819-2831页

作者： Na-Na Tian Cong-Lin Zhang Peng Lyu Jin-Tong guan Jie Cai Qing-Feng guan Shun Guo School of materials Science and Engineering Jiangsu UniversityZhenjiang 212013China School of material Science and Engineering Yancheng Institute of TechnologyYancheng 221051China Engineering Institute of Advanced manufacturing and modern Equipment Technology Jiangsu UniversityZhenjiang 212013China

This study investigates the influence of high-current pulsed electron beam(HCPEB)modification on the microstructure and shear strength of Cu/CuW *** solid-state diffusion bonding of modified-Cu(mCu)and modified-CuW(m-CuW)was achieved by HCPEB modification pretreatment at a temperature of 800-900℃and a pressure of 5 mPa for 10-50 *** demonstrate that HCPEB modification facilitates the dissolution of W and Cu,resulting in the formation of a Cu_(0.4)W_(0.6)solid solution and thus enhancing the uniform distribution of ***,HCPEB-induced defects play a beneficial role in promoting the diffusion process by providing fast diffusion paths for *** optimal joints with the maximum shear strength of 213.7 mPa were obtained through bonding m-Cu and m-CuW at 900℃and 5 mPa for 30 min,which attributes to the combined effects of fine-grained strengthening and solid solution ***,the application of HCPEB modification showcases its effectiveness in promoting element diffusion and enhancing the mechanical performance of the joints.

关键词： HCPEB Element diffusion Shear strength Crystal defects Surface modification

Boundary points, minimal L^(2) integrals and concavity property Ⅱ: Weakly pseudoconvex Kähler manifolds

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Science China mathematics 2024年第7期67卷 1665-1718页

作者： Qi’an guan Zhitong mi Zheng Yuan School of mathematical Sciences Peking UniversityBeijing100871China School of mathematics and Statistics Beijing Jiaotong UniversityBeijing100044China Institute of mathematics Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing100190China

In this paper, we consider minimal L^(2) integrals on the sublevel sets of plurisubharmonic functions on weakly pseudoconvex K?hler manifolds with Lebesgue measurable gain related to modules at boundary points of the sublevel sets, and establish a concavity property of the minimal L^(2) integrals. As applications, we present a necessary condition for the concavity degenerating to linearity, a concavity property related to modules at inner points of the sublevel sets, an optimal support function related to modules, a strong openness property of modules and a twisted version, and an effectiveness result of the strong openness property of modules.

关键词： minimal L^(2)integrals plurisubharmonic functions boundary points weakly pseudoconvex K?hler manifold

Boundary Points,minimal L^(2)Integrals and Concavity PropertyⅢ—Linearity on Riemann Surfaces and Fibrations over Open Riemann Surfaces

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Acta mathematica Sinica,English Series 2024年第9期40卷 2091-2152页

作者： Qi An guan Zhi Tong mI Zheng YUAN School of mathematical Sciences Peking UniversityBeijing 100871P.R.China School of mathematics and Statistics Beijing Jiaotong UniversityBeijing 100044P.R.China Institute of mathematics Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190P.R.China

In this article,we consider a modified version of minimal L^(2) integrals on sublevel sets of plurisubharmonic functions related to modules at boundary points,and obtain a concavity property of the modified *** applications,we give characterizations for the concavity degenerating to linearity on open Riemann surfaces and on fibrations over open Riemann surfaces.

关键词： minimal L^(2)integrals plurisubharmonic functions boundary points weakly pseudoconvex Kähler manifold

A multichannel thermal bubble-actuated impedance flow cytometer with on-chip TIA based on CmOS-mEmS

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Journal of Semiconductors 2024年第5期45卷 41-49页

作者： Shengxun Cai Jianqing Nie Kun Wang Yimin guan Demeng Liu School of microelectronics Shanghai UniversityShanghai 201800China Shanghai AURE Technology Limited Company Shanghai 201800China

Electrochemical impedance spectroscopy(EIS)flow cytometry offers the advantages of speed,affordability,and portability in cell analysis and cytometry ***,the integration challenges of microfluidic and EIS read-out circuits hinder the downsizing of cytometry *** address this,we developed a thermal-bubble-driven impedance flow cytometric application-specific integrated circuit(ASIC).The thermal-bubble micropump avoids external piping and equipment,enabling high-throughput *** a total of 36 cell counting channels,each measuring 884×220μm^(2),the chip significantly enhances the throughput of flow *** cell counting channel incorporates a differential trans-impedance amplifier(TIA)to amplify weak biosensing *** eliminating the parasitic parameters created at the complementary metal-oxidesemiconductor transistor(CmOS)-micro-electromechanical systems(mEmS)interface,the counting accuracy can be *** on-chip TIA can adjust feedback resistance from 5 to 60 kΩto accommodate solutions with different *** chip effectively classifies particles of varying sizes,demonstrated by the average peak voltages of 0.0529 and 0.4510 mV for 7 and 14μm polystyrene beads,***,the counting accuracies of the chip for polystyrene beads and mSTO-211H cells are both greater than 97.6%.The chip exhibits potential for impedance flow cytometer at low cost,high-throughput,and miniaturization for the application of point-of-care diagnostics.

关键词： EIS flow cytometry CmOS-mEmS thermal bubble lab-on-chip

Quantitative Analysis of Frosting Characteristics on the Drip Tray of A Cryogenic Valve for LNG Ships

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China Ocean Engineering 2024年第4期38卷 572-585页

作者： BAI Xu CHEN guan-yu DU Yue XU Cao CHEN Jia-jing School of Naval Architecture&Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Cryogenic valves play a crucial role in the production and transportation of liquefied natural gas(LNG),and are primarily responsible for efficiently controlling the inflow and outflow of LNG and regulating ***,due to their operation in low-temperature and high-humidity environments,crucial components such as drip trays are susceptible to frosting,which may lead to LNG leakage,thereby causing severe safety *** this study,the user-defined function(UDF)is employed to redevelop Fluent,which integrates the frost growth model with the Eulerian multiphase flow model,to conduct a quantitative analysis of frosting on drip trays of cryogenic *** effects of environmental parameters,such as wind speed,ambient temperature,air humidity,and cold surface temperature on the growth of the frost layer were *** study reveals a limiting wind speed between 1 m/s and 2 m/*** reaching this limit speed,the growth of the frost layer reaches its maximum,and further increases in the wind speed have no significant effect on the growth of the frost ***,the influence of the change in the flow field on droplet impingement and freezing during the growth of the frost layer is considered through the coupling method of the kinematic characteristics of water droplets and the collection coefficient of water *** study identifies the influence of different parameters on the droplet impact efficiency,leading to the modification of the frost layer on the drip tray.

关键词： LNG carrier drip tray frost effective impact coefficient

microstructure evolution,mechanical properties and fracture behavior of Al-xSi/AZ91D bimetallic composites prepared by a compound casting

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Journal of magnesium and Alloys 2024年第5期12卷 1944-1964页

作者： guangyu Li Wenming Jiang Feng guan Junwen Zhu Yang Yu Zitian Fan State Key Laboratory of materials Processing and Die&mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In this paper,the effect of the Si content on microstructure evolution,mechanical properties,and fracture behavior of the Al-xSi/AZ91D bimetallic composites prepared by compound casting was investigated *** obtained results showed that all the Al-xSi/AZ91D bimetallic composites had a metallurgical reaction layer(mRL),whose thickness increased with increasing Si content for the hypoeutectic Al-Si/AZ91D composites,while the hypereutectic Al-Si/AZ91D composites were *** mRL included eutectic layer(E layer),intermetallic compound layer(ImC layer)and transition region layer(T layer).In the ImC layer,the hypereutectic Al-Si/AZ91D composites contained some Si solid solution and flocculent mg_(2)Si+Al-mg ImCs phases not presented in the hypoeutectic Al-Si/AZ91D ***,increasing Si content,the thickness proportion of the T layer increased,forming an inconsistent preferred orientation of the *** shear strengths of the Al-xSi/AZ91D bimetallic composites enhanced with increasing Si content,and the Al-15Si/AZ91D composite obtained a maximum shear strength of 58.6 mPa,which was 73.4% higher than the Al-6Si/AZ91D *** fractures of the Al-xSi/AZ91D bimetallic composites transformed from the T layer into the E layer with the increase of the Si *** improvement of the shear strength of the Al-xSi/AZ91D bimetallic composites was attributed to the synergistic action of the mg_(2)Si particle reinforcement,the reduction of oxidizing inclusions and the ratio of Al-mg ImCs as well as the orientation change of the mRL.

关键词： Al/mg bimetallic composites Si content mg_(2)Si reinforcement microstructure mechanical properties Fracture behavior

The story of a decade:Genomics,functional genomics,and molecular breeding in Brassica napus

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Plant Communications 2024年第4期5卷 94-111页

作者： Jianwei Gu Zhilin guan Yushun Jiao Kede Liu Dengfeng Hong National Key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070HubeiChina College of Life Science and Technology Hubei Engineering UniversityXiaogan 432100 HubeiChina Wuhan Botanical Garden Chinese Academy of SciencesWuhan 430074 HubeiChina Yazhouwan National Laboratory Sanya 572024 HainanChina These authors contributed equally to this article.

Rapeseed(Brassica napus L.)is one of the major global sources of edible vegetable oil and is also used as a feed and pioneer crop and for sightseeing and industrial *** in genome sequencing and molecular marker technology have fueled a boom in functional genomic studies of major agronomic characters such as yield,quality,flowering time,and stress ***,introgression and pyra-miding of key functional genes have greatly accelerated the genetic improvement of important *** we summarize recent progress in rapeseed genomics and genetics,and we discuss effective molecular breeding strategies by exploring thesefindings in *** insights will extend our understanding of the molecular mechanisms and regulatory networks underlying agronomic traits and facilitate the breeding process,ultimately contributing to more sustainable agriculture throughout the world.

关键词： Brassica napus functional genomics genomics molecular breeding agronomic traits

Lactate metabolism in neurodegenerative diseases

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Neural Regeneration Research 2024年第1期19卷 69-74页

作者： Chaoguang Yang Rui-Yuan Pan Fangxia guan Zengqiang Yuan The Brain Science Center Beijing Institute of Basic Medical SciencesBeijingChina School of Life Sciences Zhengzhou UniversityZhengzhouHenan ProvinceChina

Lactate,a byproduct of glycolysis,was thought to be a metabolic waste until the discovery of the Warburg *** not only functions as a metabolic substrate to provide energy but can also function as a signaling molecule to modulate cellular functions under pathophysiological *** Astrocyte-Neuron Lactate Shuttle has cla rified that lactate plays a pivotal role in the central nervous ***,protein lactylation highlights the novel role of lactate in regulating transcription,cellular functions,and disease *** review summarizes the recent advances in lactate metabolism and its role in neurodegenerative diseases,thus providing optimal pers pectives for future research.

关键词： Alzheimer's disease Astrocyte-Neuron Lactate Shuttle brain central nervous system glucose metabolism glycolysis neuroinflammation Parkinson's disease protein lactylation signaling molecule