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Molecular Plant 2008年第2期1卷 338-346页

作者： Peng Peng Zhenyan Yan yongyou zhu Jianming Li Department of Molecular Cellular and Development Biology University of Michigan Ann Arbor MI 48109-1048 USA Present address: Howard Hughes Medical Institute Department of Molecular Cell and Developmental Biology University of California-Los AngelesLos Angeles CA g0095 USA

Glycogen synthase kinase 3 （GSK3） is a unique serine/threonine kinase that is implicated in a variety of cellular processes and is regulated by phosphorylation or protein-protein interaction in animal cells. BIN2 is an Arabidopsis GSK3- like kinase that negatively regulates brassinosteroid （BR） signaling. Genetic studies suggested that BIN2 is inhibited in response to BR perception at the cell surface to relieve its inhibitory effects on downstream targets; however, little is known about biochemical mechanisms of its inhibition. Here, we show that BIN2 is regulated by proteasome-mediated protein degradation. Exogenous application of a BR biosynthesis inhibitor and an active BR increased and decreased the amount of BIN2 proteins, respectively. Interestingly, the gain-of-function bin2-1 mutation significantly stabilizes BIN2, making it unresponsive to BR-induced BIN2 depletion. Exogenous application of different plant growth hormones revealed that BIN2 depletion is specifically induced by BR through a functional BR receptor, while treatment of a protea- some inhibitor, MG132, not only prevented the BR-induced BIN2 depletion but also nullified the inhibitory effect of BR on the BIN2 kinase activity. Taken together, our results strongly suggest that proteasome-mediated protein degradation constitutes an important regulatory mechanism for restricting the BIN2 activity.

关键词： Arabidopsis GSK3-like Kinase BRASSINOSTEROID-INSENSITIVE Proteasome-Mediated Protein Degradation

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TiAlSi合金真空电磁感应熔炼工艺研究

大型铸锻件 2024年第3期 1-4,60页

作者：赵凡郑建能朱永有李厚彬赖建平西南科技大学制造过程测试技术教育部重点实验室四川绵阳621010 二重(德阳)重型装备有限公司四川德阳618000 宁波瑞孚工业集团有限公司浙江宁波315000

采用真空电磁感应熔炼技术,使用单质原料熔炼TiAlSi三元合金,研究熔炼工艺参数(放料顺序、搅拌时间)对熔炼产物的影响,探究成分均匀TiAlSi合金的熔炼制备工艺,并对产物成分、金相组织、物相组成及硬度进行分析,为TiAlSi阴极靶材的加工... 详细信息

采用真空电磁感应熔炼技术,使用单质原料熔炼TiAlSi三元合金,研究熔炼工艺参数(放料顺序、搅拌时间)对熔炼产物的影响,探究成分均匀TiAlSi合金的熔炼制备工艺,并对产物成分、金相组织、物相组成及硬度进行分析,为TiAlSi阴极靶材的加工制备提供依据,为TiAlSiN高性能防护涂层的制备奠定基础。

关键词：电磁感应熔炼 TiAlSi合金 TiAlSiN涂层合金成分

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2.25Cr-1Mo-0.25V钢中黑色组织的形成机制及消除

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金属热处理 2023年第9期48卷 271-278页

作者：杜军毅朱永有蒋中华段红玲二重(德阳)重型装备有限公司四川德阳618000 中国科学院金属研究所沈阳材料科学国家研究中心辽宁沈阳110016

通过对大型2.25Cr-1Mo-0.25V钢锻件黑色组织的微区化学成分、光学和SEM显微组织分析研究,确定了“黑色组织”为M_(23)C_(6)“碳化物聚集区”。通过“黑色组织”演化规律的验证,找到了其形成机制和锻件低温冲击性能偏低和离散的根本原因... 详细信息

通过对大型2.25Cr-1Mo-0.25V钢锻件黑色组织的微区化学成分、光学和SEM显微组织分析研究,确定了“黑色组织”为M_(23)C_(6)“碳化物聚集区”。通过“黑色组织”演化规律的验证,找到了其形成机制和锻件低温冲击性能偏低和离散的根本原因。其形成机制与锻态钢中晶界处富集的M_(23)C_(6)碳化物有关;淬火后,在晶界上形成大尺寸的M-A岛,高温回火后,M-A岛分解、转变成聚集M_(23)C_(6)碳化物。基于形成机制并通过工艺试验,进一步发现实施≥940℃退火预处理可以消除“黑色组织”,重新热处理后锻件的各项力学性能指标均显著提高。

关键词： 2.25Cr-1Mo-0.25V钢黑色组织碳化物 M-A岛

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Few-shot incremental radar target recognition framework based on scattering-topology properties

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Chinese Journal of Aeronautics 2024年第8期37卷 246-260页

作者： Chenxuan LI Weigang zhu Bakun zhu Yonggang LI Graduate School Space Engineering UniversityBeijing 101400China Department of Electronic and Optical Engineering Space Engineering UniversityBeijing 101400China

The continuous emergence of new targets in open scenarios leads to a substantial decrease in the performance of Inverse Synthetic Aperture Radar(ISAR)recognition ***,data scarcity further exacerbates the challenge of identifying new classes of ISAR *** this paper,a few-shot incremental target recognition framework based on Scattering-Topology Properties(STPIL)is ***,STPIL extracts scattering-topology properties of ISAR targets as recognition ***,the pseudo-incremental training strategy effectively alleviates the algorithm’s forgetting of old knowledge,and improves compatibility with new ***,a feature embedding network,with few parameters,is designed based on the graph neural *** embedding network is highly adaptable to changes in data ***,STPIL fully considers the joint distribution and marginal distribution in scattering features,and uses the Brownian distance metric module to make the scattering-topology features more *** results on both the simulation dataset and the public measured data indicate that STPIL can effectively balance new classes with old classes,and has superior performance to other advanced methods in the incremental recognition of targets.

关键词： Brownian distance metric Graph neural networks Incremental learning Inverse Synthetic Aperture Radar(ISAR) Scattering

Stress-strain relationship for reactive powder concrete with recycled powder under uniaxial compression

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Frontiers of Structural and Civil Engineering 2024年第7期18卷 1015-1027页

作者： Peng zhu Yunming zhu Wenjun QU Liyu XIE College of Civil Engineering Tongji UniversityShanghai 200092China Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education Tongji UniversityShanghai 200092China

The recycled powder(RP)from construction wastes can be used to partially replace cement in the preparation of reactive powder *** this paper,reactive powder concrete mixtures with RP partially replacing cement,and natural sand instead of quartz,are *** curing is used,instead of steam curing that is normally requested by standard for reactive powder *** influences of RP replacement ratio(0%,10%,20%,30%),silica fume proportion(10%,15%,20%),and steel fiber proportion(0%,1%,2%)are *** effects of RP,silica fume,and steel fiber proportion on compressive strength,elastic modulus,and relative absorption energy are analyzed,and theoretical models for compressive strength,elastic modulus,and relative absorption energy are established.A constitutive model for the uniaxial compressive stress-strain relationship of reactive powder concrete with RP is *** the increase of RP replacement ratio from 0% to 30%,the compressive strength decreases by 42% and elastic modulus decreases by 24%.

关键词： recycled powder reactive powder concrete elastic modulus relative absorbed energy stress-strain relationship

Introduction to the first Jeme Tien Yow Lecture

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Underground Space 2024年第5期18卷 1-2页

作者： Hehua zhu Department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China

The Jeme Tien Yow Lecture is in honor of *** Tien Yow(1861–1919),the pioneer of tunneling and underground space engineering in China and also renowned as the"Father of Modern Chinese Engineering".The lecture is hosted and organized by the journal of Underground ***-Min Zhang will deliver the first Jeme Tien Yow Lecture on May 26th,2024,at RM101,College of Civil Engineering,Tongji University,Shanghai,*** has submitted the corresponding research paper,coauthored with ***,for publication in the journal of Underground *** are delighted to see its publication together with this brief introduction.

关键词： journal underground Tie

Carbon Emission Effects Driven by Evolution of Chinese Dietary Structure from 1987 to 2020

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Chinese Geographical Science 2024年第1期34卷 181-194页

作者： zhu Yuanyuan ZHANG Yan zhu Xiaohua Key Laboratory of Geographic Process Analysis&Simulation Hubei Province Central China Normal UniversityWuhan430079China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing100101China

Exploring carbon emission effects based on the evolution of residents’ dietary structure to achieve the carbon neutrality goal and mitigate climate change is an important *** study took China as the research object(data excluding Hong Kong,Macao and Taiwan) and used the carbon emission coefficient method to quantitatively measure the food carbon emissions from 1987–2020,then analyzed the carbon emission effects under the evolution of dietary *** results showed that during the study period,the Chinese dietary structure gradually changed to a high-carbon consumption *** dietary structure of urban residents developed to a balanced one,while that of rural residents developed to a high-quality *** the study period,the per capita food carbon emissions and total food consumption of Chinese showed an increasing *** per capita food carbon emissions of residents in urban and rural showed an overall upward *** total food carbon emissions in urban increased significantly,while that in rural increased first and then *** influence of beef and mutton on carbon emissions is the highest in dietary *** with the balanced dietary pattern,the food carbon emissions of Chinese residents had not yet reached the peak,but were evolving to a high-carbon consumption pattern.

关键词： dietary structure structural evolution carbon emission effects carbon neutrality China

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Designing hierarchical structures for innovative cooling textile

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Nano Research 2024年第10期17卷 9202-9224页

作者： Xiran Du Jinlei Li Bin zhu Jia zhu National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210023China School of Sustainable Energy and Resources Nanjing UniversitySuzhou 215163China

The potential of personal cooling technologies in reducing air conditioning energy consumption and enhancing human thermal comfort is *** review focuses on recent advancements in hierarchical structure design for innovative cooling *** with insights into fundamental heat transfer processes between the human body,textile,and the surroundings,we uncover key control *** the advanced hierarchical structure designs enabling effective radiation,sweat evaporation,conduction management,and integration of cold energy sources for realizing effective human body cooling are systematically ***,we explore multifunctional designs beyond cooling,including switchable cooling-heating and ***,we engage in discussions on unifying cooling performance tests and additional multiple requirements to make strides toward practical *** review is anticipated to be a valuable resource,providing the scientific and industrial communities with a quick grasp of past advancements,current challenges,and future directions in achieving effective human body cooling.

关键词： thermal comfort personal cooling textile hierarchical structures

Old Pinus massoniana forests benefit more from recent rapid warming in humid subtropical areas of central-southern China

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Journal of Forestry Research 2024年第5期35卷 155-170页

作者： Wenxin Li Liangjun zhu Lianhua zhu Mengdan Jing Censhi Qian Yu zhu Paolo Cherubini College of Life Science and Technology Central South University of Forestry and TechnologyChangsha 410004People’s Republic of China Swiss Federal Institute for Forest Snow and Landscape Research WSL8903 BirmensdorfSwitzerland Department of Forest and Conservation Sciences Faculty of ForestryUniversity of British Columbia2004-2424 Main MallVancouverBC V6T 1Z4Canada

Trees progress through various growth stages,each marked by specific responses and adaptation strate-gies to environmental *** the importance of age-related growth responses on overall forest health and management policies,limited knowledge exists regarding age-related effects on dendroclimatic relationships in key subtropical tree *** this study,we employed a den-drochronological method to examine the impact of rapid warming on growth dynamics and climatic sensitivity of young(40–60 years)and old(100–180 years)Pinus mas-soniana forests across six sites in central-southern *** normalized log basal area increment of trees in both age groups increased significantly following rapid warming in *** in young forests further showed a distinct growth decline during a prolonged severe drought(2004–2013),whereas those in old forests maintained growth *** growth was more strongly influenced by temperature than by moisture,particularly in old *** tem-peratures strongly and positively impacted the growth of old trees but had a weaker effect on young *** forests had a significantly lower resistance to extreme drought but faster recovery compared to young ***“divergence problem”was more pronounced in younger forests due to their heightened sensitivity to warming-induced drought and heat *** ongoing warming,young forests also may initially experience a growth decline due to their heightened sensitivity to winter *** findings underscore the importance of considering age-dependent changes in forest/tree growth response to warming in subtropical forest man-agement,particularly in the context of achieving“Carbon Peak&Carbon Neutrality”goals in China.

关键词： Tree rings Pinus massoniana Age effects Drought resilience Subtropical forests Rapid warming

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A review of recent advances in the effects of surface and interface properties on marine propellers

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Friction 2024年第2期12卷 185-214页

作者： Manfu zhu Liran MA State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China

Marine propellers are important propulsion devices for both surface ships and underwater *** severe environmental problems have required further performance enhancement for ***,traditional methods to improve propeller performances through geometrical and structural optimizations have been extensively investigated,while the underlying mechanisms of the effects of surface and interface properties on marine propellers are still far from being fully *** paper presented a comprehensive review of recent advances in the effects of surface and interface properties,such as surface roughness and surface wettability,on marine propellers with an emphasis on the significant improvements in both hydrodynamic and cavitation performances,hoping to arouse more in-depth investigations in the field of surface/interface science and technologies on marine propellers,and also promote the state-of-the-art technologies,such as superlubricity technology,into practical applications.

关键词： marine propellers hydrodynamics cavitation surface roughness surface wettability