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Effect of Central Multiphase Microstructure of thick Plates on Work Hardening and Crack Propag.t.on

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Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 325-338页

作者： Lei Hu Liqin zhang Feng Hu Kuan Zheng guohong zhang Collaborative Innovation Center for Advanced Steels Wuhan University of Science and TechnologyWuhan430081China Department of Applied Physics Wuhan University of Science and TechnologyWuhan430081China Analysis and testing Center Wuhan University of Science and TechnologyWuhan430081China

the effect of multiphase microstructure in the center segreg.t.on zones(CSZ)of high-strength steel thick plates on work hardening characteristics and crack initiation/propag.t.on were *** was correlated with deformation damage behavior by using.t.ylor factor(tF)gradients,kernel average misorientation(KAM),and geometric necessary dislocation(gND)*** results show that the segreg.t.on leads to a mixed structure of ferrite(soft phase)and martensite/bainite(hard phase)in the center of the thick *** to the 1/4 thickness(1/4 t)region,grain refinement occurred in the CSZ,with KAM values increasing from 0.24 to 0.49 and a decrease in the proportion of high-angle grain boundaries(>15°)from 77.4 to 51.8%.In the process of deformation,due to the influence of grain refinement and adjacent martensite/bainite,ferrite grains were divided into structural units with different tF *** higher KAM value and gND density at the interface between soft/hard phases resulted in severe work *** addition,the presence of micron-sized inclusions in the CSZ caused local strain concentration and non-continuous deformation of the matrix,which induced crack *** fracture surface showed a mixed mode of brittle cleavage fracture and ductile fracture.

关键词： thick plate Center segreg.t.on zone Multiphase microstructure taylor factor Crack propag.t.on

Recent Progress in Improving Rate Performance of Cellulose-Derived Carbon Materials for Sodium-Ion Batteries

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Nano-Micro Letters 2024年第8期16卷 102-147页

作者： Fujuan Wang.t.anyun zhang tian zhang tianqi He Fen Ran State Key Laboratory of Advanced Processing and Recycling of Non‑Ferrous Metals Lanzhou University of TechnologyLanzhou 730050People’s Republic of China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050People’s Republic of China School of Mechanical and Electronical Engineering Lanzhou University of TechnologyLanzhou 730050People’s Republic of China

Cellulose-derived carbon is regarded as one of the most promising candidates for high-performance anode materials in sodium-ion batteries;however,its poor rate performance at higher current density remains a challenge to achieve high power density sodium-ion *** present review comprehensively elucidates the structural characteristics of cellulose-based materials and cellulose-derived carbon materials,explores the limitations in enhancing rate performance arising from ion diffusion and electronic transfer at the level of cellulose-derived carbon materials,and proposes corresponding strategies to improve rate performance targ.t.d at various precursors of cellulose-based *** review also presents an update on recent progress in cellulose-based materials and cellulose-derived carbon materials,with particular focuses on their molecular,crystalline,and aggreg.t.on ***,the relationship between storage sodium and rate performance the carbon materials is elucidated through theoretical calculations and characterization ***,future perspectives regarding challenges and opportunities in the research field of cellulose-derived carbon anodes are briefly highlig.t.d.

关键词： Cellulose Hard carbon Anode materials Rate performance Sodium-ion batteries

Numerical Investig.t.on on Characteristics of Supercritical CO_(2)Heat transfer in Vertical Circular tubes with Circumferentially Half-Side Heating

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Journal of thermal Science 2024年第5期33卷 1744-1756页

作者： zhang Yan zhang Xinyi YAN Chenshuai WU Wenhua gAO Erman School of Energy and Power Engineering Northeast Electric Power UniversityJilin 132012China

the design of heat exchangers in the advanced supercritical power conversion system cannot be separated from the study of heat transfer ***-side heating mode is often encountered for solar receiver and supercritical ***,the characteristics of supercritical CO_(2)(sCO_(2))convection heat transfer in vertical tubes with circumferentially half-side heating was numerically investig.t.d through the SSt k-ωturbulent model which matches well with the experimental ***,heat transfer between sCO_(2)upflow and downflow was *** to film boiling heat transfer at subcritical pressure,numerical results were processed according.t. the supercritical pseudo-phase transition hypothesis,with liquid-like phase in the tube core region and vapor-like film in the region near the heated tube *** structure of two layers was demarcated by pseudo-critical temperature t_(pc).therefore,sCO_(2)heat transfer was assessed according.t. double thermal resistances caused by vapor-like film near the wall and core liquid-like *** findings suggest that wall temperature for upflow is higher than that for downflow,which is attributed to larger thermal resistance in the fluid domain for upflow than that for *** difference guarantees the excellent heat transfer performance for downflow than *** is also further concluded that the formation of vapor-like film near the wall due to pseudo-phase transition plays a key role in dominating wall temperature and inducing heat transfer deterioration in half-side heating *** present contribution is significant to the design of supercritical heat exchanger under half-side heating mode.

关键词： supercritical CO_(2) pseudo-phase transition half-side heating thermal resistance flow direction

Identification of human microRNA-disease association via low-rank approximation-based link propag.t.on and multiple kernel learning

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Frontiers of Computer Science 2024年第2期18卷 217-229页

作者： Yizheng WANg Xin zhang Ying JU Qing LIU Quan ZOU Yazhou zhang Yijie DINg Ying zhang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Yangtze Delta Region Institute(Quzhou) University of Electronic Science and Technology of ChinaQuzhou 324000China Beidahuang Industry group general Hospital Harbin 150088China School of Informatics Xiamen UniversityXiamen 361005China Department of Anesthesiology Hospital(T.C.M)Affiliated to Southwest Medical UniversityLuzhou 646000China Software Engineering College Zhengzhou University of Light IndustryZhengzhou 450002China

Numerous studies have demonstrated that human microRNAs(miRNAs)and diseases are associated and studies on the microRNA-disease association(MDA)have been *** developed a model using a low-rank approximation-based link propag.t.on algorithm with Hilbert–Schmidt independence criterion-based multiple kernel learning(HSIC-MKL)to solve the problem of the large time commitment and cost of traditional biological experiments involving miRNAs and diseases,and improve the model *** constructed three kernels in miRNA and disease space and conducted kernel fusion using *** propag.t.on uses matrix factorization and matrix approximation to effectively reduce computation and time *** results of the experiment show that the approach we proposed has a good effect,and,in some respects,exceeds what existing models can do.

关键词： human miRNA-disease association multiple kernel learning link propag.t.on miRNA similarity disease similarity

Dynamic Modeling and Experimental Verification of an RPR type Compliant Paralle Mechanism with Low Orders

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Chinese Journal of Mechanical Engineering 2024年第3期37卷 83-94页

作者： Shuang zhang Jingfang Liu Huafeng Ding Yanbin zhang School of Mechatronics Engineering Henan University of Science and TechnologyLuoyangHenanChina Faculty of Materials and Manufacturing College of Mechanical Engineering and Applied Electronics TechnologyBeijing University of TechnologyBeijingChina Key laboratory of advanced manufacturing.t.chnology Beijing University of TechnologyBeijingChina School of Mechanical Engineering and Electronic Information China University of Geosciences(Wuhan)WuhanChina Center of Machinery Equipment Advanced Manufacturing of Henan Province LuoyangChina

Efficiency of calculating a dynamic response is an important point of the compliant mechanism for posture *** modeling with low orders of a 2R1t compliant parallel mechanism is studied in the *** mechanism with two out-of-plane rotational and one lifting degrees of freedom(DoFs)plays an important role in posture *** on elastic beam theory,the stiffness matrix and mass matrix of the beam element are established where the moment of inertia is *** improve solving efficiency,a dynamic model with low orders of the mechanism is established based on a modified modal synthesis ***,each branch of the RPR type mechanism is divided into a ***,a set of hypothetical modes of each substructure is obtained based on the C-B ***,dynamic equation of the whole mechanism is established by the substructure assembly.A dynamic experiment is conducted to verify the dynamic characteristics of the compliant mechanism.

关键词： Compliant parallel mechanism Dynamic model Modal synthesis method Dynamic experiment

Hybrid Dynamic Variables-Dependent Event-triggered Fuzzy Model Predictive Control

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IEEE/CAA Journal of Automatica Sinica 2024年第3期11卷 723-733页

作者： Xiongbo Wan Chaoling zhang Fan Wei Chuan-Ke zhang Min Wu IEEE the School of Automation China University of Geosciencesthe Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systemsand the Engineering Research Center of Intelligent Technology for Geo-ExplorationMinistry of EducationWuhan 430074China

this article focuses on dynamic event-triggered mechanism(DEtM)-based model predictive control(MPC) for t-S fuzzy systems.A hybrid dynamic variables-dependent DEtM is carefully devised,which includes a multiplicative dynamic variable and an additive dynamic *** addressed DEtM-based fuzzy MPC issue is described as a “min-max” optimization problem(OP).to facilitate the co-design of the MPC controller and the weig.t.ng matrix of the DEtM,an auxiliary OP is proposed based on a new Lyapunov function and a new robust positive invariant(RPI) set that contain the membership functions and the hybrid dynamic variables.A dynamic event-triggered fuzzy MPC algorithm is developed accordingly,whose recursive feasibility is analysed by employing.t.e RPI *** the designed controller,the involved fuzzy system is ensured to be asymptotically *** examples show that the new DEtM and DEtM-based MPC algorithm have the advantages of reducing resource consumption while yielding.t.e anticipated performance.

关键词： Dynamic event-triggered mechanism(DEtM) hybrid dynamic variables model predictive control(MPC) robust positive invariant(RPI)set t-S fuzzy systems

Encoding and display technologies for combinatorial libraries in drug discovery:the coming of age from biology to therapy

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Acta Pharmaceutica Sinica B 2024年第8期14卷 3362-3384页

作者： Yu Fan Ruibing Feng Xinya zhang Zhen-Liang Wang Feng Xiong Shuihua zhang zhang-Feng Zhong Hua Yu Qing-Wen zhang zhang zhang Yitao Wang guodong Li Macao Centre for Research and Development in Chinese Medicine State Key Laboratory of Quality Research in Chinese MedicineInstitute of Chinese Medical SciencesUniversity of MacaoMacao SAR 999078China State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao SAR 999078China International Cooperative Laboratory of traditional Chinese Medicine Modernization and Innovative Drug Development Ministry of Education(MoE)of People’s Republic of ChinaCollege of PharmacyJinan UniversityGuangzhou 510632China Zhuhai UM Science and technology Research Institute Zhuhai 519031China Department of Pharmacy Guangzhou Red Cross HospitalFaculty of Medical ScienceJinan UniversityGuangzhou 510632China geriatric Medicine First People’s Hospital of XinXiang and the Fifth Affiliated Hospital of Xinxiang Medical CollegeXinxiang 453100China Shenzhen Innovation Center for Small Molecule Drug Discovery Co. Ltd.Shenzhen 518000China

Drug discovery is a sophisticated process that incorporates scientific innovations and cuttingedge *** to traditional bioactivity-based screening methods,encoding and display technologies for combinatorial libraries have recently advanced from proof-of-principle experiments to promising.t.ols for pharmaceutical hit discovery due to their high screening efficiency,throughput,and resource *** review systematically summarizes the development history,typology,and prospective applications of encoding and displayed technologies,including phage display,ribosomal display,mRNA display,yeast cell display,one-bead one-compound,DNA-encoded,peptide nucleic acidencoded,and new peptide-encoded technologies,and examples of preclinical and clinical *** discuss the progress of novel targ.t.d therapeutic agents,covering a spectrum from small-molecule inhibitors and nonpeptidic macrocycles to linear,monocyclic,and bicyclic peptides,in addition to *** also address the pending challenges and future prospects of drug discovery,including.t.e size of screening libraries,advantages and disadvantages of the technology,clinical translational potential,and market *** review is intended to establish a comprehensive high-throughput drug discovery strategy for scientific researchers and clinical drug developers.

关键词： Drug screening Phage display DNA-encoded chemical libraries Peptide-encoded chemical libraries Clinical drugs

Single-atom catalysts for neutral zinc-air batteries

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Science China Materials 2024年第5期67卷 1674-1675页

作者： Jiaxu zhang Minghao Yu Faculty of Chemistry and Food Chemistry&Center for Advancing Electronics Dresden(CfAED) Technische Universität DresdenDresden01062Germany

the escalating global energy demand underscores the urgency of developing sustainable battery ***-air batteries(ZABs)have emerged as promising candidates due to their costeffectiveness,safety,and high energy density[1-4].Conventional ZABs typically rely on a four-electron(4e-)oxygen reduction reaction(ORR)in strongly alkaline electrolytes.

关键词： battery neutral typically

Heterointerface engineering of rhombic Rh nanosheets confined on MXene for efficient methanol oxidation

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Journal of Energy Chemistry 2024年第6期93卷 419-428,I0011页

作者： Qi zhang Quanguo Jiang Xiang Yang Chi zhang Jian zhang Lu Yang Haiyan He guobing Ying Huajie Huang College of Materials Science and Engineering Hohai UniversityNanjing 210098JiangsuChina New Energy technology Engineering Lab of Jiangsu Province College of ScienceNanjing University of Posts&Telecommunications(NUPT)Nanjing 210023JiangsuChina School of Materials Science and Engineering Southeast UniversityNanjing 211100JiangsuChina

Although metallic rhodium(Rh)is regarded as a promising platinum-alternative anode catalyst of direct methanol fuel cell(DMFC),the conventional"particle-to-face"contact model between Rh and matrix largely limits the overall electrocatalytic performance due to their insufficient cooperative ***,we report a controllable and robust heterointerface engineering strategy for the bottom-up fabrication of rhombic Rh nanosheets in situ confined on ti_3C_(2)t_x MXene nanolamellas(Rh NS/MXene)via a convenient stereoassembly *** unique design concept gives the resulting 2D/2D Rh NS/MXene heterostructure intriguing.t.xtural features,including large accessible surface areas,strong"face-toface"interfacial interactions,homogeneous Rh nanosheet distribution,ameliorative electronic structure,and high electronic *** a consequence,the as-prepared Rh NS/MXene nanoarchitectures exhibit exceptional electrocatalytic methanol oxidation properties in terms of a large electrochemically active surface area of 126.2 m~2 g_(Rh)~(-1),a high mass activity of 1056.9 mA mg_(Rh)-~1,and a long service life,which significantly outperform those of conventional particle-shaped Rh catalysts supported by carbon black,carbon nanotubes,reduced graphene oxide,and MXene matrixes as well as the commercial Pt nanoparticle/carbon black and Pd nanoparticle/carbon black catalysts with the same noble metal loading *** functional theory calculations further demonstrate that the direct electronic interaction at the well-contacted 2D/2D heterointerfaces effectively enhances the adsorption energy of Rh nanosheets and induces a left shift of the d-band center,thereby making.t.e Rh NS/MXene configuration suffer less from CO *** work highlig.t. the importance of rational heterointerface design in the construction of advanced noble metal/MXene electrocatalysts,which may provide new avenues for developing.t.e next-generation DMFC devices.

关键词： Rhodium nanosheet ti_(3)C_(2)t_(x)MXene Heterointerface Electrocatalyst Fuel cell