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Wood of trees:Cellular structure,molecular formation,and genetic engineering

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Journal of Integrative Plant Biology 2024年第3期66卷 443-467页

作者： y.ngy.ng zhu Laigeng Li State Key.Laboratory.of Herbage Improvement and Grassland Agro-ecosy.tems and College of Ecology Lanzhou UniversityLanzhou 730000China National Key.Laboratory.of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China

Wood is an invaluable asset to human society.due to its renewable nature,making it suitable for both sustainable energy.production and material ***,wood derived from forest trees play. a crucial role in sequestering a significant portion of the carbon dioxide fixed during photosy.thesis by.terrestrial ***,with the expansion of the global population and ongoing industrialization,forest coverage has been substantially.decreased,resulting in significant challenges for wood production and *** production practices have changed away.from natural forests toward plantation ***,understanding the underly.ng genetic mechanisms of wood formation is the foundation for developing high-quality.fast-growing plantation *** ideal forest trees for wood production using genetic technologies has attracted the interest of *** studies have been carried out in recent y.ars on the molecular,genetic,and cell-biological mechanisms of wood formation,and considerable progress and findings have been *** studies and findings indicate enormous possibilities and prospects for tree *** review will outline and assess the cellular and molecular mechanisms of wood formation,as well as studies on genetically.improving forest trees,and address future development prospects.

关键词： cambium cell wall Populus wood formation xy.em

Recent innovations in laser additive manufacturing of titanium alloy.

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International Journal of Extreme Manufacturing 2024年第3期6卷 2-37页

作者： Jinlong Su Fulin Jiang Jie Teng Lequn Chen Ming y.n Guillermo Requena Lai-Chang Zhang y.Morris Wang Ily. V Okulov Hongmei zhu Chaolin Tan College of Materials Science and Engineering Hunan UniversityChangsha 410082People’s Republic of China Singapore Institute of Manufacturing Technology.SIM Tech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Institute of Materials Research German Aerospace Center(DLR)Linder Höhe51147 CologneGermany Centre for Advanced Materials and Manufacturing Edith Cowan University270 Joondalup DriveJoondalupPerthWestern Australia 6027Australia Department of Materials Science and Engineering University of CaliforniaLos AngelesCA 900095United States of America Leibniz Institute for Materials Engineering-IWT Badgasteiner Str.328359 BremenGermany Faculty.of Production Engineering University of BremenBadgasteiner Str.128359 BremenGermany Key.Laboratory.of Hunan Province of Equipment Safety.Service Technology.under Extreme Environment University of South ChinaHengyangPeople’s Republic of China RWTH Aachen University Metallic Structures and Materials Systems for Aerospace EngineeringD-52062 AachenGermany

Titanium(Ti)alloy. are widely.used in high-tech fields like aerospace and biomedical *** additive manufacturing(LAM),as an innovative technology.is the key.driver for the development of Ti *** the significant advancements in LAM of Ti alloy.,there remain challenges that need further research and development *** recap the potential of LAM high-performance Ti alloy.this article sy.tematically.reviews LAM Ti alloy. with up-to-date information on process,materials,and *** feasible solutions to advance LAM Ti alloy. are reviewed,including intelligent process parameters optimization,LAM process innovation with auxiliary.fields and novel Ti alloy. customization for *** auxiliary.energy.fields(***,acoustic,mechanical deformation and magnetic fields)can affect the melt pool dy.amics and solidification behaviour during LAM of Ti alloy.,altering microstructures and mechanical *** kinds of novel Ti alloy. customized for LAM,like peritecticα-Ti,eutectoid(α+β)-Ti,hy.rid(α+β)-Ti,isomorphousβ-Ti and eutecticβ-Ti alloy. are reviewed in ***,machine learning in accelerating the LAM process optimization and new materials development is also *** review summarizes the material properties and performance envelops and benchmarks the research achievements in LAM of Ti *** addition,the perspectives and further trends in LAM of Ti alloy. are also highlighted.

关键词： additive manufacturing titanium alloy. auxiliary.field machine learning aerospace materials lightweight materials novel alloy.

Incorporating contextual evidence to improve implicit discourse relation recognition in Chinese

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Frontiers of Computer Science 2024年第3期18卷 91-104页

作者： Sheng XU Peifeng LI Qiaoming zhu School of Computer Science and Technology Soochow UniversitySuzhou 215000China

The discourse analy.is task,which focuses on understanding the semantics of long text spans,has received increasing attention in recent *** a critical component of discourse analy.is,discourse relation recognition aims to identify.the rhetorical relations between adjacent discourse units(e.g.,clauses,sentences,and sentence groups),called arguments,in a *** works focused on capturing the semantic interactions between arguments to recognize their discourse relations,ignoring important textual information in the surrounding ***,in many.cases,more than capturing semantic interactions from the texts of the two arguments are needed to identify.their rhetorical relations,requiring mining more contextual *** this paper,we propose a method to convert the RST-sty.e discourse trees in the training set into dependency.based trees and train a contextual evidence selector on these transformed *** this way.the selector can learn the ability.to automatically.pick critical textual information from the context(i.e.,as evidence)for arguments to assist in discriminating their *** we encode the arguments concatenated with corresponding evidence to obtain the enhanced argument ***,we combine original and enhanced argument representations to recognize their *** addition,we introduce auxiliary.tasks to guide the training of the evidence selector to strengthen its selection *** experimental results on the Chinese CDTB dataset show that our method outperforms several state-of-the-art baselines in both micro and macro F1 scores.

关键词： discourse parsing discourse relation recognition contextual evidence selection

Controllable chemical redox reactions to couple microbial degradation for organic contaminated sites remediation:A review

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Journal of Environmental Sciences 2024年第5期139卷 428-445页

作者： Bin Chen Jiang Xu Lizhong zhu College of Environmental and Resource Sciences Zhejiang UniversityHangzhou 310058China Zhejiang Provincial Key.Laboratory.of Organic Pollution Process and Control Zhejiang UniversityHangzhou 310058China Zhejiang Agriculture&Forest University Lin'an 311300China

Global environmental concern over organic contaminated sites has been progressively.conspicuous during the process of urbanization and industrial *** traditional phy.ical or chemical remediation technologies may.significantly.destroy.the soil structure and function,coupling moderate chemical degradation with microbial remediation becomes a potential way.for the green,economic,and efficient remediation of contaminated ***,this work sy.tematically.elucidates why.and how to couple chemical technology.with microbial remediation,mainly.focused on the controllable redox reactions of organic *** rational design of materials structure,selective generation of reactive oxy.en species,and estimation of degradation pathway.are described for chemical ***,current progress on efficient and selective reductions of organic contaminants(i.e.,dechlorination,defluorination,-NO_(2) reduction)is *** with the microbial remediation of contaminated sites,several consideration factors of how to couple chemical and microbial remediation are proposed based on both fundamental and practical points of *** review will advance the understanding and development of chemical-microbial coupled remediation for organic contaminated sites.

关键词： Soil remediation Groundwater remediation Rational design Reactive species Environmental nanotechnology

Dy.amic characteristics of multi-span spinning beams with elastic constraints under an axial compressive force

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Applied Mathematics and Mechanics(English Edition) 2024年第2期45卷 295-310页

作者： Xiaodong GUO zhu SU Lifeng WANG State Key.Laboratory.of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and AstronauticsNanjing 210016China

A theoretical model for the multi-span spinning beams with elastic constraints under an axial compressive force is *** displacement and bending angle functions are represented through an improved Fourier series,which ensures the continuity.of the derivative at the boundary.and enhances the *** exact characteristic equations of the multi-span spinning beams with elastic constraints under an axial compressive force are derived by.the Lagrange *** efficiency.and accuracy.of the present method are validated in comparison with the finite element method(FEM)and other *** effects of the boundary.spring stiffness,the number of spans,the spinning velocity.and the axial compressive force on the dy.amic characteristics of the multi-span spinning beams are *** results show that the present method can freely.simulate any.boundary.constraints without modify.ng the solution *** elastic range of linear springs is larger than that of torsion springs,and it is not affected by.the number of *** an increase in the axial compressive force,the attenuation rate of the natural frequency.of a spinning beam with a large number of spans becomes larger,while the attenuation rate with an elastic boundary.is lower than that under a classic simply.supported boundary.

关键词： multi-span spinning beam elastic constraint improved Fourier series free vibration semi-analy.ical solution

Dual-functional poly.2-methy.-2-oxazoline)/poly.2-(dimethy.amine)ethy. methacry.ate)mixed brushes with switchable protein adsorption and antibacterial properties

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Chinese Journal of Chemical Engineering 2024年第2期66卷 19-30页

作者： Kang He Liangy. zhu y.nmei Wang CAS Key.Laboratory.of Soft Matter Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

Herein,binary.mixed brushes consisting of poly.2-methy.-2-oxazoline)(PMOXA)and poly.2-(dimethy.amine)ethy. methacry.ate)(PDMAEMA)with different chain lengths were fabricated by.successive grafting of NH_(2)-terminated PMOXA and SH-terminated PDMAEMA onto poly.opamine-anchored *** mixed-brush coating was characterized by.variable-angle spectroscopic ellipsometry.X-ray.photoelectron spectroscopy.Fourier transform infrared spectroscopy.zeta potential measurements,water contact angle,and atomic force *** mixed brushes showed tunable surface charge,wettability.and surface roughness,depending on the degree of PDMAEMA swelling under vary.ng pH and ionic strength(Ⅰ).Then the adsorption behaviors of pepsin,bovine serum albumin(BSA),γ-globulin,and ly.ozy.e,four very.different proteins with regard to isoelectric point,on the mixed brushes coating were studied by.using fluorescence microscopy.and surface plasmon *** the chain length of PDMAEMA was about twice as long as PMOXA,the mixed brushes not only.had high adsorption capacity.for pepsin,BSA,and y.globulin but also had a desorption efficiency.of 86.9%,87.1%,and 93.5%,*** is explained that electrostatic attraction between the protonated PDMAEMA and positively.charged acidic proteins(pepsin and BSA,whose isoelectric points were below the pK_(a) of PDMAEMA)would drive the intensive adsorption(at pH 3,I=10^(-3)mol·L^(-1)for pepsin,and pH 5,I=10^(-5)mol·L^(-1)for BSA),while desorption was dominated by.the hy.rophilic PMOXA when PDMAEMA was shrinking(at pH 7,I=10^(-1)mol·L^(-1)for pepsin,and pH 9,I=10^(-1)mol·L^(-1)for BSA).Furthermore,the isoelectric precipitation led to the adsorption of neutral protein(γ-globulin,whose isoelectric point was near the pK_a of PDMAEMA)at pH 7,I=10^(-5)mol·L^(-1),while electrostatic repulsion and antifouling PMOXA triggered the desorption of y.globulin at pH 3,I-10^(-1)mol·L^(-1).However,alkaline protein(ly.ozy.e,whose isoelectric point was higher than

关键词： Switchable conformation transition Controllable protein adsorption Mixed brushes Isoelectric point Antibacterial surface

Heat Storage Performance of PCM in a Novel Vertical Pointer-Shaped Finned Latent Heat Tank

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Journal of Thermal Science 2024年第2期33卷 422-434页

作者： MAO Qianjun zhu y.any.an LI Tao School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China

The heat storage performance of latent heat storage sy.tems is not good due to the poor thermal conductivity.of phase change *** this paper,a new ty.e of pointer-shaped fins combining rectangular and triangular fins has been employ.d to numerically.simulate the melting process in the heat storage tank,and the fin geometry.parameter effects on heat storage performance have been *** results indicate that compared with the bare tube and the rectangular finned tank,the melting time of the phase change material in the pointer-shaped finned tank is reduced by.64.2%and 15.1%,*** closer the tip of the triangular fin is to the hot wall,the better the heat transfer *** optimal height of the triangular fin is about 8 *** the number of fins from 4 to 6 and from 6 to 8 reduces the melting time by.16.0%and 16.7%***,increasing the number of fins from 8 to 10 only.reduces the melting time by.8.4%.When the fin dimensionless length is increased from 0.3 to 0.5 and from 0.5 to 0.7,the melting time is shortened by.17.5%and 13.0%.But the melting time is only.reduced by.2.9%when the dimensionless fin length is increased from 0.7 to *** optimising the design of the thermal storage sy.tem,the results can provide a reference value.

关键词： thermal energy.storage phase change material pointer-shaped fins heat storage performance

A General Simulation Method for Complex Deformation of Irregular-Shaped Origami Configurations

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Acta Mechanica Solida Sinica 2024年第1期37卷 90-98页

作者： Zhaochen Dong y.chao zhu Xu Guo State Key.Laboratory.of Structural Analy.is for Industrial Equipment Department of Engineering MechanicsInternational Research Center for Computational MechanicsDalian University of TechnologyDalian 116023China

Most existing treatments for origami-folding simulations have focused on regular-shaped *** article aims to introduce a general strategy.for simulating and analy.ing the deformation process of irregular shapes by.means of computational capabilities *** better simulate origami deformation with folding orders,the concept of plane follow-up is introduced to achieve automated computer simulation of complex folding patterns,thereby.avoiding intersection and penetration between *** on the evaluation criteria such as the lowest storage energy.with tightening and the fastest pace from tightening to unfolding,the optimal crease distribution patterns for four irregular(‘N’-,‘T’-,‘O’-,and‘P’-shaped)origami configurations are then presented under five *** the dimensions of the origami are fixed,it is discovered that simpler folding patterns lead to faster deformation of the origami *** the folding complexity.is fixed,higher strain energy.results in more rapid origami expansion.

关键词： Irregular-shaped origami Complex deformation Computer-aided origami design General simulation

Edge and lithium concentration effects on intercalation kinetics for graphite anodes

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Journal of Energy.Chemistry 2024年第3期90卷 337-347,I0009页

作者： Keming zhu Denis Kramer Chao Peng School of Mechanical and Precision Instrument Engineering Xi'an University of TechnologyXi'an 710048ShanxiChina Faculty.of Mechanical Engineering Helmut-Schmidt UniversityHamburg 22043Germany School of Engineering University of SouthamptonSouthampton SO171BJUK Multiscale Cry.tal Materials Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina

Graphite interfaces are an important part of the anode in lithium-ion batteries(LIBs),significantly.influencing Li intercalation *** anodes adopt different stacking sequences depending on the concentration of the intercalated Li *** this work,we performed first-principles calculations to comprehensively.address the energetics and dy.amics of Li intercalation and Li vacancy.diffusion near the no n-basal edges of graphite,namely.the armchair and zigzag-edges,at high Li *** find that surface effects persist in stage-Ⅱ that bind Li strongly.at the edge ***,the pronounced effect previously.identified at the zigzag edge of pristine graphite is reduced in LiC_(12),penetrating only.to the subsurface site,and eventually.disappearing in LiC_(6).Consequently.the distinctive surface state at the zigzag edge significantly.impacts and restrains the charging rate at the initial lithiation of graphite anodes,whilst diminishes with an increasing degree of *** diffusion time for Li hopping to the bulk site from either the zigzag edge or the armchair edge in LiC_(6) was observed during high state of charge due to charge *** controlling Li occupation and diffusion kinetics at this stage is also crucial for enhancing the charge rate.

关键词： Graphite anode Edge Interface Lithium-ion batteries Density.functional theory