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Fast thermal responsive separators toward long-life and safe lithium metal batteries

Nano Research 2024年第4期17卷 2746-2754页

作者： Pingan Li Zhifang Liu Yitong Peng Shanshan Yang Tao Meng Yunhuan hu Yingjun Jiang Hao Sun Qi Li Xianluo hu State Key Laboratory of Materials Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Lithium metal batteries(LMBs)have been extensively investigated during the past decades because of their ultrahigh energy *** the increasing demand for energy density,however,the safety issue of LMBs has become a significant *** particular,localized areas of increased temperature(namely,hotspots)may be induced and even exacerbated within LMBs by uneven current distribution,internal short circuits,or inadequate heat dissipation,which significantly sacrifices battery safety and cycle ***,we report the rational design and fabrication of a fast thermal responsive separator capable of inhibiting the growth of lithium dendrites and mitigating thermal propagation,thereby reducing the risk of thermal *** as-achieved separator comprises both an electrospun membrane using a phase change material with superior thermal-storage ability and a thermally conductive modification layer of hexagonal boron nitride nanosheets with a fast heat-transfer *** is demonstrated that such a unique integration of heat conduction and heat storage enables the functional separator with attractive abilities to mitigate hotspots and inhibit the growth of lithium dendrites upon the cycling of ***,pouch cells with the thermal-responsive separator,as well as numerical simulations,verify much enhanced safety and cycle life of *** work may offer a new conceptual design of intelligent separators that acts as a functional unit encapsulated within a single cell to boost in-situ thermal management,which will help to develop high-safety and energy-dense LMBs.

关键词： lithium metal batteries separators hotspots safety thermal management

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多年生黑麦草VQ家族基因的鉴定及分析

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植物科学学报 2024年第1期42卷 48-55页

作者：王阳孙振婷胡涛李吉涛生物资源保护与利用湖北省重点实验室(湖北民族大学) 湖北恩施445000 中国科学院武汉植物园武汉430074 中国科学院大学北京100049 兰州大学草地农业科技学院兰州730000

VQ(Valine-glutamine)是植物特有的一类蛋白,在植物生长发育及抵御生物与非生物胁迫中发挥着重要作用,但在多年生黑麦草(Lolium perenne L.)中鲜有VQ基因的相关研究报道。本研究利用生物信息学方法在多年生黑麦草基因组中鉴定了52个LpV... 详细信息

VQ(Valine-glutamine)是植物特有的一类蛋白,在植物生长发育及抵御生物与非生物胁迫中发挥着重要作用,但在多年生黑麦草(Lolium perenne L.)中鲜有VQ基因的相关研究报道。本研究利用生物信息学方法在多年生黑麦草基因组中鉴定了52个LpVQ基因,其不均匀地分布于7条染色体上。亚细胞定位结果显示,LpVQ蛋白主要定位于细胞核,仅LpVQ45定位于细胞膜。系统进化分析表明,LpVQ基因被分为7个亚家族,与拟南芥(Arabidopsis thaliana(L.)Heynh.)只存在4对直系同源基因。基因结构分析结果表明,46个LpVQ基因无内含子。荧光定量PCR分析结果显示,从各亚家族中随机选取的21个LpVQ基因不同程度地响应黑暗、高温及盐胁迫,且在胁迫早期快速响应。

关键词：多年生黑麦草 VQ基因家族非生物胁迫表达分析

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Stabilization or degradation?Post-translational modifications of JAZ proteins in plants

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Molecular Plant 2024年第7期17卷 1002-1004页

作者： Xiaoyan Xu Jianping hu Zheng Yuan Joint International Research Laboratory of Metabolic&Developmental Sciences School of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai200240China Department of Energy Plant Research Laboratory and Plant Biology Department Michigan State UniversityEast LansingMI 48824USA

Jasmonates(JAs)are essential hormones that regulate plant responses to biotic and abiotic stresses and are involved in various developmental processes,including flowering time control,floral organ development,and fertility of male and female gametes(Howe et al.,2018).However,our understanding of the mechanisms by which JAs integrate multiple signals to regulate diverse physiological processes remains *** the canonical JA signaling pathway,activated JAs are perceived by the F-box protein receptor CORONATINE INSENSITIVE 1(COl1),which induces the interaction between COl1 and the Jas domain of the repressor proteins JASMONATE-ZIM DOMAIN PROTEINs(JAZs),leading to the ubiquitination and degradation of JAZ *** proteolytic destruction of the JAZ repressors is a crucial step that releases the inhibition of JAZs on the JA response transcription factor MYC2,allowing MYC2 to activate the expression of downstream genes(Howe et al.,2018).Therefore,the stability and specific spatiotemporal expression pattern of the JAZ proteins are critical for the regulation of JA signaling output,as they determine the activation and repression of JA responses.

关键词： translational fertility release

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Organic Synthesis through Radical Innovation:Frustrated Radical Pairs

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Chinese Journal of Chemistry 2024年第10期42卷 1157-1160页

作者： Zhibin hu Zengrui Cheng Ning Jiao State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityBeijing 100191China Shanghai Key Laboratory of Green Chemistry and Chemical Processes East China Normal UniversityShanghai 200062China

Frustrated Lewis Pairs(FLPs)represent a unique class of interactions in Lewis acid-base chemistry,driven by spatial hindrance or incongruent orbital energy levels that hinder the formation of effective coordination *** have received significant attention for their application in activating small molecules and facilitating organic synthesis *** developments have led to the emergence of Frustrated Radical Pairs(FRPs)as an extension of the radical *** are formed from FLPs through Single Electron Transfer(SET)and exhibit the ability to activate a variety of chemical *** research on FLPs is well-established,investigations into FRPs in organic reactions remain *** review highlights the current state of FRPs in organic synthesis,delves into mechanistic insights,explores their potential,and underscores the challenges in this emerging field.

关键词： Radicals Frustrated Lewis Pairs Frustrated Radical Pairs Methodology and reactions Reaction mechanisms

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New Algebraic Attacks on Grendel with the Strategy of Bypassing SPN Steps

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Chinese Journal of Electronics 2024年第3期33卷 635-644页

作者： Wenxiao QIAO Siwei SUN Lei hu State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences School of Cyber Security University of Chinese Academy of Sciences School of Cryptology University of Chinese Academy of Sciences State Key Laboratory of Cryptology

The rapid development of modern cryptographic applications such as zero-knowledge,secure multiparty computation,fully homomorphic encryption has motivated the design of new so-called arithmetization-oriented symmetric *** designing ciphers in this domain is relatively new and not well-understood,the security of these new ciphers remains to be completely *** this paper,we revisit the security analysis of arithmetizat ionoriented cipher *** uses the Legendre symbol as a component,which is tailored specifically for the use in zero-knowledge and efficiently-varifiable proof *** FSE 2022,the first preimage attack on some original full GrendelHash instances was *** a countermeasure,the designer adds this attack into the security analysis and updates the formula to derive the secure number of *** our work,we present new algebraic attacks on *** the preimage attack,we can reduce the complexity or attack one more round than previous attacks for some *** addition,we present the first collision attack on some round-reduced instances by solving the constrained input/constrained output problem for the underlying permutations.

关键词： Ciphers Symbols Multi-party computation Complexity theory Homomorphic encryption

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Natural products from untapped sources as a potent reserve against antimicrobial resistance crisis

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Chinese Journal of Natural Medicines 2024年第7期22卷 577-579页

作者： GU Xiaoxia SUN Weiguang hu Zhengxi hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of PharmacyTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Since the discovery of penicillin in 1928,antibiotics have revolutionized modern medicine by effectively treating infectious diseases and saving countless ***,the widespread development of antimicrobial resistance(AMR)now threatens the efficacy and longevity of these critical drugs.A study published in The Lancet reported that bacterial AMR contributed to approximately 4.95 million deaths globally in 2019,with 1.27 million directly attributable to AMR(Fig.1)[1].Natural products(NPs)continue to play a crucial role in discovering new antibiotics.

关键词： Natural products Untapped sources Antimicrobial resistance

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An infinite-dimensional representation of the Ray-Knight theorems

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Science China Mathematics 2024年第1期67卷 149-162页

作者： Elie Aidékon Yueyun hu Zhan Shi School of Mathematical Sciences Fudan UniversityShanghai 200433China LAGA UniversitéSorbonne Paris NordVilletaneuse 93430France Institute of Applied Mathematics Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China

The classical Ray-Knight theorems for the Brownian motion determine the law of its local time process either at the first hitting time of a given value a by the local time at the origin,or at the first hitting time of a given position b by the Brownian *** extend these results by describing the local time process jointly for all a and b,by means of the stochastic integral with respect to an appropriate white *** result applies toμ-processes,and has an immediate application:aμ-process is the height process of a Feller continuous-state branching process(CSBP)with immigration(Lambert(2002)),whereas a Feller CSBP with immigration satisfies a stochastic differential equation(SDE)driven by a white noise(Dawson and Li(2012));our result gives an explicit relation between these two descriptions and shows that the SDE in question is a reformulation of Tanaka’s formula.

关键词： Ray-Knight theorem μ-process white noise Tanaka's formula

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Ship recognition based on HRRP via multi-scale sparse preserving method

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Journal of Systems Engineering and Electronics 2024年第3期35卷 599-608页

作者： YANG Xueling ZHANG Gong SONG hu College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Lab of Radar Imaging and Microwave Photonics Ministry of EducationNanjing 210016China Nanjing Marine Radar Institute Nanjing 210016China

In order to extract the richer feature information of ship targets from sea clutter, and address the high dimensional data problem, a method termed as multi-scale fusion kernel sparse preserving projection(MSFKSPP) based on the maximum margin criterion(MMC) is proposed for recognizing the class of ship targets utilizing the high-resolution range profile(HRRP). Multi-scale fusion is introduced to capture the local and detailed information in small-scale features, and the global and contour information in large-scale features, offering help to extract the edge information from sea clutter and further improving the target recognition accuracy. The proposed method can maximally preserve the multi-scale fusion sparse of data and maximize the class separability in the reduced dimensionality by reproducing kernel Hilbert space. Experimental results on the measured radar data show that the proposed method can effectively extract the features of ship target from sea clutter, further reduce the feature dimensionality, and improve target recognition performance.

关键词： ship target recognition high-resolution range profile(HRRP) multi-scale fusion kernel sparse preserving projection(MSFKSPP) feature extraction dimensionality reduction

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Unleashing potentials with deep learning: decoding the complex events for distributed fiber optic sensing applications

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Science China(Information Sciences) 2024年第5期67卷 337-338页

作者： Yujiao LI Liqin hu Kuanglu YU Institute of Information Science School of Computer and Information Technology Beijing Jiaotong University Beijing Key Laboratory of Advanced Information Science and Network Technology Beijing Jiaotong University

After decades of research, distributed fiber optic sensors have become essential tools for precise long-distance measurements. They are applied across various sectors such as railway transportation, gas and petroleum, and smart grids. Signal processing, particularly in phase-sensitive optical time domain reflectometry(Φ-OTDR) event recognition and classification, is a primary research focus.

关键词： Deep learning

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A Wideband High-Gain Sawtooth Slot Array Antenna with Frequency-Scanning at Lower Frequency and Fixed-Beam at Higher Frequency

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Chinese Journal of Electronics 2024年第2期33卷 463-471页

作者： Qiang SUN Yongling BAN Jun hu School of Electronic Science and Engineering University of Electronic Science and Technology of China

Exploring the multifunctional array antenna suitable for complex communication environment has very important research value. In this paper, a millimeter wave(mm-wave) double longitudinal sawtooth slot array antenna(DLSA) based on substrate integrated waveguide(SIW) technology is proposed, which has wideband, highgain and novel beam characteristics. Two irregular longitudinal slots are etched on the SIW conductor surface as the radiation structure. To improve the bandwidth of the DLSA, the metallized vias are added at the transition point of the slots to construct multiple resonant frequency points. By adjusting the size of the slots and the position of the metallized vias, the phase constant can be regulated, and the unusual beam characteristics can be obtained. That is to say, in the lower frequency band, the beam pointing angle increases with frequency. In the higher frequency band,the beam pointing angle is maintained at a fixed angle. Finally, to improve the antenna gain, a 16 × 8 DLSA is fabricated, measured and discussed. The proposed antenna has an impedance matching bandwidth close to 9.7 *** 27 to 33 GHz, the beam pointing angle changes from 8° to 29°. From 33 to 37 GHz, the beam pointing angle is fixed at 29°, and the pointing angle error range is ±1°. In addition, the measured maximum gain is 22.9 d Bi at32 GHz.

关键词： Antenna measurements Slot antennas Surface waves Resonant frequency Gain measurement Conductors Frequency measurement

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