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Defence Technology（防务技术） 2024年第3期33卷 374-385页

作者： Bihui Hong Wenbin Li Yiming Li zhiwei guo Binyou Yan Ministerial Key Laboratory of ZNDY Nanjing University of Science and TechnologyNanjing 210094China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China Xiamen Tungsten Co. Ltd.Xiamen 361004China

This paper proposes a type of double-layer charge liner fabricated using chemical vapor deposition(CVD)that has tungsten as its inner *** feasibility of this design was evaluated through penetration ***-layer charge liners were fabricated by using CVD to deposit tungsten layers on the inner surfaces of pure T2 copper *** microstructures of the tungsten layers were analyzed using a scanning electron microscope(SEM).The feasibility analysis was carried out by pulsed X-rays,slug-retrieval test and static penetration *** shaped charge jet forming and penetration law of inner tungsten-coated double-layer liner were studied by numerical simulation *** results showed that the double-layer liners could form well-shaped *** errors between the X-ray test results and the numerical results were within 11.07%.A slug-retrieval test was found that the retrieved slug was similar to a numerically simulated *** with the traditional pure copper shaped charge jet,the penetration depth of the double-layer shaped charge liner increased by 11.4% and>10.8% *** summary,the test results are good,and the numerical simulation is in good agreement with the test,which verified the feasibility of using the CVD method to fabricate double-layer charge liners with a high-density and high-strength refractory metal as the inner liner.

关键词： Shaped charge Chemical vapor deposition Tungsten Double-layer charge liner X-ray Penetration

A universal non-Hermitian platform for bound state in the continuum enhanced wireless power transfer

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Frontiers of physics 2024年第4期19卷 37-46页

作者： Haiyan Zhang zhiwei guo Yunhui Li Yaping Yang Yuguang Chen Hong Chen School of Physics Science and Engineering Tongji UniversityShanghai 200092China Department of Electrical Engineering Tongji UniversityShanghai 201804China

Non-Hermitian systems with parity–time(PT)-symmetry have been extensively studied and rapidly developed in resonance wireless power transfer(WPT).The WPT system that satisfies PT-symmetry always has real eigenvalues,which promote efficient energy ***,meeting the condition of PT-symmetry is one of the most puzzling *** power transfer under different transmission conditions is also a great *** state in the continuum(BIC)supporting extreme quality-factor mode provides an opportunity for efficient ***,we propose theoretically and demonstrate experimentally that BIC widely exists in resonance-coupled systems without PT-symmetry,and it can even realize more stable and efficient power transfer than PT-symmetric ***,BIC for efficient WPT is universal and suitable in standard second-order and even high-order WPT *** results not only extend non-Hermitian physics beyond PT-symmetry,but also bridge the gap between BIC and practical application engineering,such as highperformance WPT,wireless sensing and communications.

关键词： non-Hermitian physics parity-time asymmetry bound state in the continuum wireless power transfer

Deep learning-based intelligent precise aeration strategy for factory recirculating aquaculture systems

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Artificial Intelligence in Agriculture 2024年第2期12卷 57-71页

作者： Junchao Yang Yuting Zhou zhiwei guo Yueming Zhou Yu Shen School of Artificial Intelligence Chongqing Technology and Business UniversityChongqing 400067China National Research Base of Intelligent Manufacturing Services Chongqing Technology and Business UniversityChongqing 400067China

Factory recirculating aquaculture system(RAS)is facing in a stage of continuous research and technological *** aquaculture is an important direction for the future development of ***,the RAS nowdays still has poor self-learning and optimal decision-making capabilities,which leads to high aqua-culture cost and low running *** this paper,a precise aeration strategy based on deep learning is de-signed for improving the healthy growth of breeding ***,the situation perception driven by computer vision is used to detect the hypoxia *** combined with the biological energy model,it is constructed to calculate the breeding objects oxygen ***,the optimal adaptive aeration strategy is generated according to hypoxia behavior judgement and biological energy *** results show that the energy consumption of proposed precise aeration strategy decreased by 26.3%compared with the man-ual control and 12.8%compared with the threshold ***,stable water quality conditions acceler-ated breeding objects growth,and the breeding cycle with the average weight of 400 g was shortened from 5 to 6 months to 3–4 months.

关键词： Recirculating aquaculture system Precise aeration Deep learning Intelligent control

mIgM-mediated splenic marginal zone B cells targeting of folic acid for immunological evasion

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Acta Pharmaceutica Sinica B 2024年第2期14卷 808-820页

作者： Huan Wang Zhuxuan Jiang zhiwei guo Gan Luo Tianhao Ding Changyou Zhan Department of Pharmacology School of Basic Medical Sciences&Department of PharmacyShanghai Pudong HospitalFudan UniversityShanghai 200032China Department of Pharmaceutical Sciences School of PharmacyNaval Medical UniversityShanghai 200433China Shanghai Engineering Research Center for Synthetic Immunology Fudan UniversityShanghai 200032China

Folic acid is a fully oxidized synthetic folate with high bioavailability and stability which has been extensively prescribed to prevent congenital *** we revealed the immunosuppressive effect of folic acid by targeting splenic marginal zone B(MZB)*** acid demonstrates avid binding with the Fc domain of immunoglobulin M(IgM),targeting IgM positive MZB cells in vivo to destabilize IgM-B cell receptor(BCR)complex and block immune *** induced anergy of MZB cells by folic acid provides an immunological escaping window for *** conjugation of folic acid with therapeutic proteins and antibodies induces immunological evasion to mitigate the production of anti-drug antibodies,which is a major obstacle to the long-term treatment of biologics by reducing curative effects and/or causing adverse *** acid acts as a safe and effective immunosuppressant via IgM-mediated MZB cells targeting to boost the clinical outcomes of biologics by inhibiting the production of anti-drug antibodies,and also holds the potential to treat other indications that adverse immune responses need to be transiently shut off.

关键词： Membrane-bound IgM Anti-drugantibodies Bcell anergy Folic acid Marginal zoneBcells Bcell receptor Biologics Targeting

Greenhouse gas emissions from Daihai Lake,China:Should eutrophication and salinity promote carbon emission dynamics?

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Journal of Environmental Sciences 2024年第1期135卷 407-423页

作者： Xiangwei Li Ruihong Yu Jun Wang Heyang Sun Xinyu Liu Xiaohui Ren Shuai Zhuang zhiwei guo Xixi Lu Inner Mongolia Key Laboratory of River and Lake Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot 010070China Key Laboratory of Mongolian Plateau Ecology and Resource Utilization Ministry of EducationHohhot 010070China Autonomous Region Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River Hohhot 010018China Department of Geography National University of Singapore117570Singapore

Greenhouse gases(GHGs)emitted or absorbed by lakes are an important component of the global carbon ***,few studies have focused on the GHG dynamics of eutrophic saline lakes,thus preventing a comprehensive understanding of the carbon ***,we conducted four sampling analyses using a floating chamber in Daihai Lake,a eutrophication saline lake in Inner Mongolia Autonomous Region,China,to explore its carbon dioxide(CO_(2))and methane(CH_(4))*** mean CO_(2)emission flux(FCO_(2))and CH_(4)emission flux(FCH_(4))were 17.54±14.54 mmol/m^(2)/day and 0.50±0.50 mmol/m^(2)/day,*** results indicated that Daihai Lake was a source of CO_(2)and CH_(4),and GHG emissions exhibited temporal *** mean CO_(2)partial pressure(p CO_(2))and CH_(4)partial pressure(p CH_(4))were 561.35±109.59μatm and 17.02±13.45μatm,which were supersaturated relative to the *** regression and correlation analysis showed that the main influencing factors of p CO_(2)were wind speed,dissolved oxygen(DO),total nitrogen(TN)and Chlorophyll a(Chl.a),whereas the main influencing factors of p CH_(4)were water temperature(WT),Chl.a,nitrate nitrogen(NO_(3)^(-)-N),TN,dissolved organic carbon(DOC)and water *** regulated carbon mineralization and organic matter decomposition,and it was an important influencing factor of p CO_(2)and p CH_(4).Additionally,the trophic level index(TLI)significantly increased p CH_(4).Our study elucidated that salinity and eutrophication play an important role in the dynamic changes of GHG ***,research on eutrophic saline lakes needs to be strengthened.

关键词： Eutrophication Salinity Greenhouse gas emissions Inland lake Inner Mongolia Autonomous Region

Review of the evolution and prevention of friction,wear,and noise for water-lubricated bearings used in ships

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Friction 2024年第1期12卷 1-38页

作者： Zhuo ZHANG Wu OUYANG Xingxin LIANG Xinping YAN Chengqin YUAN Xincong ZHOU zhiwei guo Conglin DONG Zhenglin LIU Yong JIN Jinhua XIAO School of Transportation and Logistics Engineering Wuhan University of TechnologyWuhan 430063China Reliability Engineering Institute National Engineering Research Center for Water Transport SafetyWuhan 430063China School of Naval Architecture Ocean and Energy Power EngineeringWuhan University of TechnologyWuhan 430063China East Lake Laboratory Wuhan 420202China

With the development of green tribology in the shipping industry,the application of water lubrication gradually replaces oil lubrication in stern bearings and thrust *** terms of large-scale and high-speed ships,water-lubricated bearings with high performance are more strictly ***,due to the lubricating medium,water-lubricated bearings have many problems such as friction,wear,vibration,noise,*** review focuses on the performance of marine water-lubricated bearings and their failure prevention ***,the research of marine water-lubricated bearings is reviewed by discussing its lubrication principle,test technology,friction and wear mechanism,and friction noise generation *** performance enhancement methods have been overviewed from structure optimization and material ***,the potential problems and the perspective of water-lubricated bearings are given in detail.

关键词： water-lubricated bearings lubrication principles test techniques friction and wear friction noise evolution and prevention

Level pinning of anti-PT-symmetric circuits for efficient wireless power transfer

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National Science Review 2024年第1期11卷 215-224页

作者： zhiwei guo Fengqing Yang Haiyan Zhang Xian Wu Qiong Wu Kejia Zhu Jun Jiang Haitao Jiang Yaping Yang Yunhui Li Hong Chen MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Sciences and Engineering Tongji University Department of Electrical Engineering Tongji University School of Automotive Studies Tongji University

Wireless power transfer(WPT) technology based on magnetic resonance(a basic physical phenomenon)can directly transfer energy from the source to the load without wires and other physical contacts, and has been successfully applied to implantable medical devices, electric vehicles, robotic arms and other ***, due to the frequency splitting of near-field coupling, the resonant WPT system has some unique limitations, such as poor transmission stability and low efficiency. Here, we propose anti-resonance with level pinning for high-performance WPT. By introducing the anti-resonance mode into the basic WPT platform, we uncover the competition between dissipative coupling and coherent coupling to achieve novel level pinning, and construct an effective anti-parity-time(anti-PT)-symmetric non-Hermitian system that is superior to previous PT-symmetric WPT schemes. On the one hand, the eigenvalue of the anti-PT-symmetric system at resonance frequency is always pure real in both strong and weak coupling regions, and can be used to overcome the transmission efficiency decrease caused by weak coupling, as brought about by, for example, a large size ratio of the transmitter to receiver, or a long transmission *** the other hand, due to the level pinning effect of the two kinds of coupling mechanisms, the working frequency of the system is guaranteed to be locked, so frequency tracking is not required when the position and size of the receiver change. Even if the system deviates from the matching condition, an efficient WPT can be realized, thereby demonstrating the robustness of the level pinning. The experimental results show that when the size ratio of the transmitter coil to the receiver coil is 4.29(which is in the weak coupling region), the transfer efficiency of the anti-PT-symmetric system is nearly 4.3(3.2) times higher than that of the PT-symmetric system when the matching conditions are satisfied(deviated). With the miniaturization and integration of d

关键词： non-Hermitian system wireless power transfer anti-PT-symmetric circuits synthetic dimension metamaterials

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试论秦安大地湾地画的考古背景

考古 2024年第8期 93-105页

作者：郭志委中国社会科学院考古研究所北京市100101

对考古出土图像类材料的解读是考古学研究的重要内容之一。在这类研究中,史前时期的图像研究相对特殊,面临的困难包括缺乏对当时社会的清晰认识、缺少同时期文献的支持等。因此,对于史前时期图像研究而言,考古背景是重要基础。目前已有... 详细信息

对考古出土图像类材料的解读是考古学研究的重要内容之一。在这类研究中,史前时期的图像研究相对特殊,面临的困难包括缺乏对当时社会的清晰认识、缺少同时期文献的支持等。因此,对于史前时期图像研究而言,考古背景是重要基础。目前已有的图像研究多重视分析图像本身,对其考古背景关注不够。有鉴于此,本文拟从秦安大地湾遗址出土地画的考古背景着眼,对其特点、性质、内涵等问题进行探讨。

关键词：甘肃秦安县大地湾地画考古背景图像研究

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地方性氟中毒致机体损伤的研究进展

中华地方病学杂志 2024年第1期43卷 71-76页

作者：赵凡郭志伟内蒙古医科大学公共卫生学院，呼和浩特010110 内蒙古自治区综合疾病预防控制中心业务处，呼和浩特010080

地方性氟中毒是指生活在由自然或人为污染所致高氟环境中的居民,因体内摄入过量氟化物而引起的一种地方性疾病。氟斑牙、氟骨症是地方性氟中毒较常见的症状;此外,长期氟暴露还可引起神经系统、心血管系统、泌尿系统等多个系统的损伤,最... 详细信息

地方性氟中毒是指生活在由自然或人为污染所致高氟环境中的居民,因体内摄入过量氟化物而引起的一种地方性疾病。氟斑牙、氟骨症是地方性氟中毒较常见的症状;此外,长期氟暴露还可引起神经系统、心血管系统、泌尿系统等多个系统的损伤,最终导致全身多器官的慢性病变和功能障碍。目前,地方性氟中毒仍是我国乃至世界的严重公共卫生问题之一。故本文从骨相和非骨相系统两方面就地方性氟中毒对人群机体损伤的研究进展进行综述,以期为今后地方性氟中毒的持续防控提供参考依据。

关键词：氟机体损伤骨相系统非骨相系统

Observation of accurately designed bound states in the continuum in momentum space

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Photonics Research 2024年第4期12卷 638-647页

作者： JIAJU WU JINGGUANG CHEN XIN QI zhiwei guo JIAJUN WANG FENG WU YONG SUN YUNHUI LI HAITAO JIANG LEI SHI JIAN ZI HONG CHEN MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China State Key Laboratory of Surface Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and Department of PhysicsFudan UniversityShanghai 200433China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China

Bound states in the continuum(BICs)in artificial photonic structures have received considerable attention since they offer unique methods for the extreme field localization and enhancement of light-matter ***,the symmetry-protected BICs are located at high symmetric points,while the positions of accidental BICs achieved by tuning the parameters will appear at some points in momentum *** to now,to accurately design the position of the accidental BIC in momentum space is still a ***,we theoretically and experimentally demonstrate an accurately designed accidental BIC in a two-coupled-oscillator system consisting of bilayer gratings,where the optical response of each grating can be described by a single resonator *** changing the interlayer distance between the gratings to tune the propagation phase shift related to wave vectors,the position of the accidental BIC can be arbitrarily controlled in momentum ***,we present a general method and rigorous numerical analyses for extracting the polarization vector fields to observe the topological properties of BICs from the polarization-resolved transmission ***,an application of the highly efficient second harmonic generation assisted by quasi-BIC is *** work provides a straightforward strategy for manipulating BICs and studying their topological properties in momentum space.

关键词： polarization tuning resonator