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International Journal of Minerals,Metallurgy and Materials 2011年第4期18卷 472-478页

作者： ye-ming fan Hong Guo Jun Xu Ke Chu Xue-xin Zhu Cheng-chang Jia Non-Ferrous Metal Processing Division General Research Institute for Non-ferrous Metals Beijing 100088 China Institute of Powder Metallurgy University of Science and Technology Beijing Beijing 100083 China

Diamond reinforced copper（Cu/diamond） composites were prepared by pressure infiltration for their application in thermal management where both high thermal conductivity and low coefficient of thermal expansion（CTE） are *** were characterized by the microstructure and thermal properties as a function of boron content,which is used for matrix-alloying to increase the interfacial bonding between the diamond and *** obtained composites show high thermal conductivity（660 W/（m·K）） and low CET（7.4×10-6 K-1） due to the formation of the B13C2 layer at the diamond-copper interface,which greatly strengthens the interfacial *** property measurements indicate that in the Cu-B/diamond composites,the thermal conductivity and the CTE show a different variation trend as a function of boron content,which is attributed to the thickness and distribution of the interfacial carbide *** CTE behavior of the present composites can be well described by Kerner＇s model,especially for the composites with 0.5wt% B.

关键词： composite materials pressure infiltration thermal conductivity coefficient of thermal expansion

珠江三角洲城市群留鸟多样性格局及其驱动机制

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中山大学学报（自然科学版）（中英文） 2025年第1期64卷 218-227页

作者：叶俊宏刘珍环杨帆魏莱周义广东省粤北岩溶区碳水耦合野外科学观测研究站/中山大学地理科学与规划学院广东广州510006

鸟类是反映城市生境和生物多样性变化的重要指标,城市鸟类多样性分布格局模拟与预测是当前城市生物多样性保护研究中重点关注的难题。珠江三角洲城市群经历了快速的城市化过程,景观变化显著,给城市生境和生物多样性保护带来了巨大挑战... 详细信息

鸟类是反映城市生境和生物多样性变化的重要指标,城市鸟类多样性分布格局模拟与预测是当前城市生物多样性保护研究中重点关注的难题。珠江三角洲城市群经历了快速的城市化过程,景观变化显著,给城市生境和生物多样性保护带来了巨大挑战。为解析城市鸟类多样性与城市生境之间的空间关联机制,构建“单物种分布预测-物种多样性聚类-多样性的影响归因”的空间综合途径,开展珠江三角洲城市群留鸟空间格局与形成机制研究。结果表明:1)珠江三角洲城市群的87种留鸟构成的多样性与适宜性具有高度的城-乡梯度分布模式;将留鸟的空间适宜性聚类可分为8类,总体上留鸟的中高适宜区占比小于30%。2)结构方程模型的解析可以发现,人类活动显著地正向影响了鸟类多样性的空间分布格局,影响系数介于0.28~1.94;而植被、气候、地形的正向或负向效应差异明显。研究可为城市生物多样性保护,调控鸟类多样性的生境影响因素,开展城市生态建设与管理提供科学依据。

关键词：城市生物多样性鸟类 MaxEnt模型结构方程模型

Lower Bound for Quantum Integration Error on Anisotropic Sobolev Classes

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Acta Mathematica Sinica,English Series 2010年第4期26卷 669-678页

作者： Pei xin ye School of Mathematical Sciences and LPMC Nankai University Tianjin 300071 P. R. China

We study the approximation of the integration of multivariate functions in the quantum model of computation. Using a new reduction approach we obtain a lower bound of the n-th minimal query error on anisotropic Sobolev class R（Wpr（[0, 1]d））（r R＋d）. Then combining this result with our previous one we determine the optimal bound of n-th minimal query error for anisotropic Hblder- Nikolskii class R（H∞r（[0,1]d）） and Sobolev class R（W∞r（[0,1]d））. The results show that for these two types of classes the quantum algorithms give significant speed up over classical deterministic and randomized algorithms.

关键词： quantum integration anisotropic Sobolev classes Holder-Nikolskii classes n-th minimal query error

Towards advanced zinc anodes by interfacial modification strategies for efficient aqueous zinc metal batteries

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Journal of Energy Chemistry 2024年第6期93卷 79-110,I0003页

作者： Changchun fan Weijia Meng Jiaye ye Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology Ministry of EducationSchool of ChemistryBeihang UniversityBeijing 100191China Shaanxi Key Laboratory of New Transportation Energy and Automotive Energy Saving School of Energy and Electrical EngineeringChang’an UniversityXi’an 710061ShaanxiChina School of Chemistry and Physics Faculty of ScienceQueensland University of TechnologyBrisbaneQLD 4001Australia Centre for Materials Science Queensland University of TechnologyBrisbaneQLD 4001Australia

Developing sustainable and clean energy sources(e.g.,solar,wind,and tide energy)is essential to achieve the goal of carbon *** to the discontinuous and inco nsistent nature of common clean energy sources,high-performance energy storage technologies are a critical part of achieving this *** zinc metal batteries(AZMBs)with inherent safety,low cost,and competitive performance are regarded as one of the promising candidates for grid-scale energy ***,zinc metal anodes(ZMAs)with irreversible problems of dendrite growth,hydrogen evolution reaction,self-corrosio n,and other side reactions have seriously hindered the development and commercialization of *** increasing number of researchers are focusing on the stability of ZMAs,so assessing the effectiveness of existing research strategies is critical to the development of *** review aims to provide a comprehensive overview of the fundamentals and challenges of *** rch strategies for interfacial modification of ZMAs are systematically *** features of artificial interfacial coating and in-situ interfacial coating of ZMAs are compared and discussed in detail,as well as the effect of modified interfacial ZMA on the full-battery ***,perspectives are provided on the problems and challenges of *** review is expected to offer a constructive reference for the further development and commercialization of AZMBs.

关键词： Aqueous zinc metal batteries Zinc metal anode Interfacial modification Artificial interfacial coating In-situ interfacial coating

The direct synthesis of Ni/SAPO-11 hydroisomerization catalyst via a novel two-step crystallization strategy

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Petroleum Science 2022年第5期19卷 2448-2459页

作者： Wei-Long Zhan Yu-Chao Lyu xin-Mei Liu Lei fan Fu-Rang Li ye Yang State Key Laboratory of Heavy Oil Processing China University of PetroleumQingdao266580China College of Chemical Engineering China University of PetroleumQingdao266580China

The Ni/SAPO-11 catalyst used for n-hexane hydroisomerization was prepared via a novel two-step crystallization *** involves introduction of nickel salt into the pre-crystalized system of SAPO-11 by grinding followed by a second crystallization *** extra solvent is introduced during the whole synthesis procedure which reduces waste liquid emissions *** importantly,interaction between nickel and support is effectively regulated by the novel method to achieve a well dispersed nickel species and inhibit formation of inert nickel spinel *** environments of framework Si are tuned to enhance surface acidity of the Ni/SAPO-11 *** also shows smaller particle size which favors fast diffusion of reactants and *** into the two-step crystallization indicate that accumulation of SAPO-11 precursors in the pre-crystallization stage,pH regulation by nickel salt and structural directing effect of Ni2+during the second crystallization period account for the rapid crystal growth and smaller particle size of the Ni/SAPO-11 *** the unique features endow the Ni/SAPO-11 catalyst higher activity and isomers selectivity than the Pt/SAPO-11 catalyst in n-hexane hydroisomerization.

关键词： Two-step crystallization Hydroisomerization catalyst Nickel SAPO-11 Synthesis

Orphan Crops and their Wild Relatives in the Genomic Era

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Molecular Plant 2021年第1期14卷 27-39页

作者： Chu-Yu ye Longjiang fan Institute of Crop Sciences&Institute of Bioinformatics Zhejiang UniversityHangzhou 310058China Hainan Institute of Zhejiang University Sanya 572024China

More than half of the calories consumed by humans are provided by three major cereal crops(rice,maize,and wheat).Orphan crops are usually well adapted to low-input agricultural conditions,and they not only play vital roles in local areas but can also contribute to food and nutritional needs ***,many wild relatives of orphan crops are important weeds of major *** orphan crops and their wild relatives have received little attentions from researchers for many years,genomic studies have recently been performed on these ***,we provide an overview of genomic studies on orphan crops,with a focus on orphan cereals and their wild *** genomes of at least 12 orphan cereals and/or their wild relatives have been *** addition to genomic benefits for orphan crop breeding,we discuss the potential ways for mutual utilization of genomic data from major crops,orphan crops,and their wild relatives(including weeds)and provide perspectives on genetic improvement of both orphan and major crops(including de novo domestication of orphan crops)in the coming genomic era.

关键词： orphan crop wild relative weed genome crop diversity

Electromagnetic interference shielding Ti3C2Tx-bonded carbon black films with enhanced absorption performance

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Chinese Chemical Letters 2020年第4期31卷 1026-1029页

作者： Xiaomeng fan Minghang Li xin Li fang ye Jimei Xue Litong Zhang Laifei Cheng Science and Technology on Thermostructural Composite Materials Laboratory Northwestern Polytechnical UniversityXi'an 710072China

The demand for flexible and freestanding electromagnetic interference(EMI)shielding materials are more and more urgent to combat with serious electromagnetic(EM)radiation *** Ti3C2Tx is considered as promising EMI shielding material to graphenes because of the low cost and high electrical ***,the shielding performance still needs to be optimized to decrease the reflection effectiveness(SER)and increase absorption effectiveness(SEA).Herein,we prepared Ti3C2Tx-bonded carbon black films with a porous *** SER decreased from 20 dB to12 dB and the SEA increased from 31 dB to 47 *** best EMI shielding effectiveness can be as high as60 dB with SEA of 15 dB and SER of45 *** calculated specific shielding effectiveness can be as high as8718 dB cm^2/*** results indicate that the porous structure can enhance the absorption of the EMI shielding films,resulting from the enhanced scattering and reflectio *** ntly,this work provides a promising MXene-based EMI shielding film with lightweight and flexibility.

关键词： Carbon black MXenes Film Electromagnetic interference shielding Flexible

Graphene supremacy:the duo duo

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National Science Review 2022年第12期9卷 61-62页

作者： fan Zhang xin-Cheng Xie Department of Physics University of Texas at Dallas International Center for Quantum Materials School of Physics Peking University

Graphene is an amazing material that presents us with new challenges and opportunities,even after two decades of extensive *** two linear energy bands of graphene cross at the K and K’points of the hexagonal Brillouin zone with topological winding numbers±*** Dirac cone description is nearly perfect within a～3 eV energy range—more than 100 times room ***,the chemistry of graphene sets its Fermi energy right at the Dirac points.

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Synthesis of Iminosugar-Containing KRN7000 Analogues

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Chinese Journal of Chemistry 2017年第6期35卷 1001-1008页

作者： LeiZhang xin-Shan ye State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Xue Yuan Road No. 38 Beijing 100191 China

Three new iminosugar-containing KRN7000 （also referred to as α-GalCer） analogues were designed and syn- thesized. In the design, the galactose moiety of KRN7000 was replaced by iminosugars and the iminosugar struc- tures were connected with ceramide in different manners with a C-glycosidic bond instead of the O-glycosidic bond. To our knowledge, this is the first report in which iminosugars are incorporated in KRN7000 structure modifica- tions. The synthetic compounds were evaluated for their ability to stimulate cytokine release. The results may benefit better understanding of structure-activity relationships and facilitate future design of more KRNT000 derivatives.

关键词： KRN7000 analogue glycolipid a-GalCer iminosugar synthesis

Effects of riverbed scour on seismic performance of high-rise pile cap foundation

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Earthquake Engineering and Engineering Vibration 2010年第4期9卷 533-543页

作者： Han Zhenfeng ye Aijun fan Lichu State Key Laboratory for Disaster Reduction of Civil Engineering Tongji University Shanghai 200092 China

To explore the seismic performance of a high-rise pile cap foundation with riverbed scour, a finite element model for foundations is introduced in the OpenSees finite element framework. In the model, a fiber element is used to simulate the pile shaft, a nonlinear p-y element is used to simulate the soil-pile interaction, and the p-factor method is used to reflect the group effects. A global and local scour model is proposed, in which two parameters, the scour depth of the same row of piles and the difference in the scour depth of the upstream pile and the downstream pile, are included to study the influence of scour on the foundation. Several elasto-plastic static pushover analyses are performed on this finite element model. The analysis results indicate that the seismic capacity （or supply） of the foundation is in the worst condition when the predicted deepest global scout depth is reached, and the capacity becomes larger when the local scour depth is below the predicted deepest global scout depth. Therefore, to evaluate the seismic capacity of a foundation, only the predicted deepest global scout depth should be considered. The method used in this paper can be also applied to foundations with other soil types.

关键词： riverbed scour high-rise pile cap pile group fiber element seismic capacity pushover p-y element