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Dimension by.Dimension Finite Volume HWENO Method for Hy.erbolic Conservation Laws

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Communications on Applied Mathematics and Computation 2024年第1期6卷 605-624页

作者： feng Zheng Jianxian Qiu College of Mathematics and Statistics Fujian Normal UniversityFuzhou350117FujianChina School of Mathematical Sciences and Fujian Provincial Key.Laboratory.of Mathematical Modeling&High-Performance Scientific Computing Xiamen UniversityXiamen361005FujianChina

In this paper,we propose a finite volume Hermite weighted essentially.non-oscillatory.HWENO)method based on the dimension by.dimension framework to solve hy.erbolic conservation *** can maintain the high accuracy.in the smooth region and obtain the high resolution solution when the discontinuity.appears,and it is compact which will be good for giving the numerical boundary.***,it avoids complicated least square procedure when we implement the genuine two dimensional(2D)finite volume HWENO reconstruction,and it can be regarded as a generalization of the one dimensional(1D)HWENO *** numerical tests are performed to verify.the high resolution and high accuracy.of the scheme.

关键词： Finite volume Dimension by.dimension HWENO Hy.erbolic conservation laws

A dual-function selection sy.tem enables positive selection of multigene CRISPR mutants and negative selection of Cas9-free progeny.in Arabidopsis

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aBIOTECH 2024年第2期5卷 140-150页

作者： feng-Zhu Wang y.ng Bao Zhenxiang Li Xiangy. Xiong Jian-feng Li State Key.Laboratory.of Biocontrol Guangdong Provincial Key Laboratory of Plant ResourcesSchool of Life SciencesSun Yat-sen UniversityGuangzhou 510275China

The CRISPR/Cas9 technology.revolutionizes targeted gene knockout in diverse organisms including ***,screening edited alleles,particularly.those with multiplex editing,from herbicide-or antibiotic-resistant transgenic plants and segregating out the Cas9 transgene represent two laborious *** solutions to facilitate these processes rely.on different selection ***,by.taking advantage of the opposite functions of a D-amino acid oxidase(DAO)in detoxify.ng D-serine and in metabolizing non-toxic D-valine to a cy.otoxic product,we develop a DAO-based selection sy.tem that simultaneously.enables the enrichment of multigene edited alleles and elimination of Cas9-containing progeny.in Arabidopsis *** five DAOs tested in Escherichia coli,the one encoded by.Trigonopsis variabilis(TvDAO)could confer slightly.stronger D-serine resistance than other *** expression of TvDAO in Arabidopsis allowed a clear distinction between transgenic and nontransgenic plants in both D-serine-conditioned positive selection and D-valine-conditioned negative *** a proof of concept,we combined CRISPR-induced single-strand annealing repair of a dead TvDAO with D-serine-based positive selection to help identify.transgenic plants with multiplex editing,where D-serine-resistant plants exhibited considerably.higher co-editing frequencies at three endogenous target genes than those selected by.***,D-valine-based negative selection successfully.removed Cas9 and TvDAO transgenes from the survival offspring carry.ng inherited ***,this work provides a novel strategy.to ease CRISPR mutant identification and Cas9 transgene elimination using a single selection marker,which promises more efficient and simplified multiplex CRISPR editing in plants.

关键词： CRISPR Genome editing D-amino acid oxidase Cas9-free Selection marker

Effect of Sc on Al_(3)Fe phase and mechanical properties of as-cast AA5052 aluminum alloy

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China Foundry 2024年第3期21卷 257-264页

作者： y.ng Li Qing y. feng-feng Chen Jia-wen He Hong-mei y.ng Meng-nie Li Faculty.of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

The AA5052 aluminum alloy.is widely.used in automobile and aerospace manufacturing,and with the development of light-weight alloy.,it is required that these materials exhibit better mechanical *** studies have demonstrated that the addition of Sc to aluminum alloy. can improve both the microstructure and properties of the *** this study.the effect of Sc on the Fe-rich phase and properties of the AA5052 aluminum alloy.was studied by.adding 0%,0.05%,0.2%,and 0.3%*** results show that with the increase of Sc,the coarse needle-like Fe-rich phase gradually.transforms into Chinese-script and then nearly.spherical particles,reduce the size of Fe-rich phase,and refine the grain with increase of high angle grain boundaries(HAGBs).These microstructure changes enhance the strength of the AA5052 alloy.through Sc *** ductility.of the alloy.is obviously.improved because the addition of a lower amount of Sc changes the morphology.of Fe-rich phase from needle-like into a Chinese-script,and it is subsequently.reduced as a result of significant increase in HAGBs with increasing Sc content.

关键词： AA5052 aluminum alloy Al3Fe phase mechanical properties grain boundary

Changes in the microbial community.structure and diversity.during the electricity.generation process of a microbial fuel cell with algal-film cathode

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Clean Energy 2024年第5期8卷 177-185页

作者： Haiping Wang Liguo Zheng Changy.n Tan Ling Li feng Liu Hui feng Changsha Environmental Protection Vocational College Changsha 410004HunanChina School of Geographic Sciences Hunan Normal UniversityChangsha 410081HunanChina Key.Laboratory.of Agro-Ecological Processes in Subtropical Regions Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125HunanChina

A two-chamber microbial fuel cell(MFC)with algal-film cathode was *** showed good electric-generating performance with three electric-generating stages:start-up,development,and *** average output voltage reached~0.412 V during the stable period.A maximum power density.during continuous operation was 19.76 mW/m^(2).Bacterial samples were collected from the anode in the three stages(A1,A2,and A3),and their community.structure and diversity.were analy.ed using Illumina MiSeq high-throughput sequencing technology.A total of 4238 operational taxonomic units were identified based on the number of *** the phy.um level,Proteobacteria and Bacteroidetes play.d a dominant role in the three stages and increased significantly.during electricity.*** with A1,the relative abundances of Proteobacteria in A2 and A3 increased by.23.30%and 32.06%,respectively.whereas those of Bacteroidetes in A2 and A3 increased by.5.56%and 14.50%,*** the genus level,there were differences in the composition of bacterial communities among the three *** and Chlorobium became the dominant genera in A2,replacing Nitrospira and norank_f__Saprospiraceae in A1,and Sphingobacterium and Ochrobactrum became the dominant genera in *** to the sample cluster and principal component analy.es,A1 was clustered into one class,and A2 and A3 were clustered into a second *** work revealed bacterial community.succession at the anode of an algal-film cathode MFC during the electricity.generation process,which provides a theoretical basis for the subsequent promotion of electricity.generation by.algal-film cathode MFCs.

关键词： microbial fuel cell electricity.generation high-throughput sequencing bacterial community

Honokiol Prevents Intestinal Barrier Dy.function in Mice with Severe Acute Pancreatitis and Inhibits JAK/STAT1 Pathway.and Acety.ation of HMGB1

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Chinese Journal of Integrative Medicine 2024年第6期30卷 534-542页

作者： LI Jie CHEN y.-feng GAO Lei LI y.-jie feng Dian-xu Department of General Surgery Putuo HospitalShanghai University of Traditional Chinese MedicineShanghai200062China

Objective To investigate the effect of honokiol(HON)and the role of high-mobility.group protein B1(HMGB1)on the pathogenesis of severe acute pancreatitis(SAP).Methods Thirty.mice were numbered according to weight,and randomly.divided into 5 groups using a random number table,including control,SAP,SAP and normal saline(SAP+NS),SAP and ethy. py.uvate(SAP+EP),or SAP+HON groups,6 mice in each *** of pancreas,intestine,and blood were collected 12 h after SAP model induction for examination of pathologic changes,immune function alterations by.enzy.e linked immunosorbent assay.ELISA),and Western *** vitro experiments,macrophages were divided into 5 groups,the control,lipopoly.accharide(LPS),LPS+DMSO(DMSO),LPS+anti-HMGB1 monoclonal antibody.mAb),and LPS+HON *** tight connection level was determined by.transmission electron microscopy.and fluorescein *** location and acety.ation of HMGB1 were measured by.Western ***,py.idone 6 and silencing signal transducer and activator of the transcription 1(siSTAT1)combined with honokiol were added to determine whether the Janus kinase(JAK)/STAT1 participated in the regulation of honokiol on *** protein expression levels of HMGB1,JAK,and STAT1 were detected using Western *** Mice with SAP had inflammatory.injury.in the pancreas,bleeding of intestinal tissues,and cells with disrupted *** in the SAP+HON group had significantly.fewer pathological *** with SAP also had significant increases in the serum levels of amy.ase,lipase,HMGB1,tumor necrosis factor-α,interleukin-6,diamine oxidase,endotoxin-1,and *** in the SAP+HON group did not show these abnormalities(Py.decreased the levels of junctional adhesion molecule C,and elevated intercellular permeability.P<0.01).HON treatment blocked these *** of

关键词： severe acute pancreatitis intestinal barrier dy.function honokiol high-mobility.group protein B1 Januskinase signal transducerand activatorof transcription1

Client selection and resource scheduling in reliable federated learning for UA V-assisted vehicular networks

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Chinese Journal of Aeronautics 2024年第9期37卷 328-346页

作者： Hongbo ZHAO Liwei GENG Wenquan feng ChangmingZHOU School of Electronics and Information Engineering Beihang UniversityBeijing 100191China

Federated Learning(FL),a promising deep learning paradigm extensively.deploy.d in Vehicular Edge Computing Networks(VECN),allows a distributed approach to train datasets of nodes locally.e.g.,for mobile vehicles,and exchanges model parameters to obtain an accurate model without raw data ***,the existence of malicious vehicular nodes as well as the inherent heterogeneity.of the vehicles hinders the attainment of accurate ***,the local model training and model parameter transmission during FL exert a notable energy.burden on vehicles constrained in *** view of this,we investigate FL client selection and resource management problems in FL-enabled UAV-assisted Vehicular Networks(FLVN).We first devise a novel reputation-based client selection mechanism by.integrating both data quality.and computation capability.metrics to enlist reliable high-performance ***,to fortify.the FL reliability.we adopt the consortium blockchain to oversee the reputation informa-tion,which boasts tamper-proof and interference-resistant ***,we formulate the resource scheduling problem by.jointly.optimizing the computation capability.the transmission power,and the number of local training rounds,aiming to minimize the cost of clients while guaranteeing *** this end,we propose a reinforcement learning algorithm employ.ng an asy.chronous parallel network structure to achieve an optimized scheduling *** results show that our proposed client selection mechanism and scheduling algorithm can realize reliable FL with an accuracy.of 0.96 and consistently.outperform the baselines in terms of delay.and energy.consumption.

关键词： Federated learning Vehicular edge computing Resource management Reinforcement learning Optimization techniques

Enhanced High-Temperature Energy.Storage Performance of All-Organic Composite Dielectric via Constructing Fiber-Re in forced Structure

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Energy.& Environmental Materials 2024年第2期7卷 299-307页

作者： Mengjia feng y. feng Changhai Zhang Tiandong Zhang Xu Tong Qiang Gao Qingguo Chen Qingguo Chi Key.Laboratory.of Engineering Dielectrics and Its Application Ministry of EducationHarbin University of Science and TechnologyHarbin 150080China School of Electrical and Electronic Engineering Harbin University of Science and TechnologyHarbin 150080China

Optimizing the high-temperature energy.storage characteristics of energy.storage dielectrics is of great significance for the development of pulsed power devices and power control *** a poly.er with a higher glass transition temperature(T_(g))as the matrix is one of the effective way. to increase the upper limit of the poly.er operating ***,current high-T_(g)poly.ers have limitations,and it is difficult to meet the demand for high-temperature energy.storage dielectrics with only.one *** example,poly.therimide has high-energy.storage efficiency.but low breakdown strength at high *** has high corona resistance,but low high-temperature energy.storage *** this work,combining the advantages of two poly.er,a novel high-T_(g)poly.er fiber-reinforced microstructure is *** is designed as extremely.fine fibers distributed in the composite dielectric,which will facilitate the reduction of high-temperature conductivity.loss for *** the same time,due to the high-temperature resistance and corona resistance of poly.mide,the high-temperature breakdown strength of the composite dielectric is *** the poly.mide content with the best high-temperature energy.storage characteristics is determined,molecular semiconductors(ITIC)are blended into the poly.mide fibers to further improve the high-temperature ***,excellent high-temperature energy.storage properties are *** 0.25 vol%ITIC-poly.mide/poly.therimide composite exhibits high-energy.density.and high discharge efficiency.at 150℃(2.9 J cm^(-3),90%)and 180℃(2.16 J cm^(-3),90%).This work provides a scalable design idea for high-performance all-organic high-temperature energy.storage dielectrics.

关键词： all-organic energy.storage density high-temperature high-temperature breakdown strength

Experimental quantum state compression from two identical qubits to a qutrit

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Science China(Phy.ics,Mechanics & Astronomy. 2024年第7期67卷 1-5页

作者： Qiao Xu Lin-Xiang Zhou Tian-feng feng Shang-feng Qiu Si-Wu Li Wu-Ji Zhang Hui Luo Xiao-Qi Zhou State Key.Laboratory.of Optoelectronic Materials and Technologies and School of Phy.ics Sun Yat-sen UniversityGuangzhou 510000China Hefei National Laboratory Hefei 230088China

In the realm of modern information technology.data compression technology.occupies a pivotal *** advancements in quantum information technology.the need to compress large-scale qubits ensembles has become urgent,aiming to reduce the demand on quantum storage ***,existing quantum state compression schemes generally.face a limitation:the particles before and after compression must reside in the same dimensional *** specific scenarios,compressing qubits into particles of higher dimensions not only.enhances the efficiency.of quantum state compression but also further reduces the usage of quantum storage *** we experimentally.demonstrated a quantum state compression between particles of different dimensions,successfully.compressing two qubits into a single *** average fidelity.of the resulting qutrit with the ideal quantum state is *** study.may.have potential applications in future quantum information,such as increasing quantum communication bandwidth and reducing storage resource consumption in quantum computing.

关键词： quantum state compression quantum information technology optics

Preface to the Special Issue in Celebration of Professor Shouwen y.’s 85th Birthday

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Acta Mechanica Solida Sinica 2024年第3期37卷 361-362页

作者： Xi-Qiao feng Quny.ng Li Department of Engineering Mechanics Tsinghua UniversityBeijing100084China

Shouwen y.,Emeritus Professor of Applied Mechanics at Tsinghua University.was born on May.4,1939 in Xiany.u County.Fujian Province,*** pursued his undergraduate studies from 1955 to 1958 in the Department of Civil Str... 详细信息

关键词： Fujian Preface pursue