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Profile of Dr. Jiaojun zhu

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Science China(Life Sciences) 2025年第2期68卷 311-313页

作者： zhu, Jiaojun

Dr. Jiaojun zhu is the director general of Institute of Applied Ecology(IAE), Chinese Academy of Sciences(CAS)(2018 to present). He received his B.S. degree in Forest Science from Shenyang Agricultural University, China in July 1987, and subsequently joined Institute of Forestry and Soil, CAS(now known as the IAECAS) to pursue his M.S. degree in *** graduation, he served as a research assistant and an associate research fellow in the IAE-CAS from 1990 to 1996.

关键词： Forest pursue assistant

The research of near field acoustical holographic imaging method

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Chinese Journal of Acoustics 1993年第1期12卷 38-46页

作者： ZHANG Dejun, XIA Xianhua, YAN Jing CHENG jianzheng, WANG Qun, zhu Nianqiu(Wuhan Institute of Physics, Chinese Academy of Sciences, Wuhan, 430071)

This paper reviews the theoretical analysis of the imaging method and characteristic of the Nearfield Acoustical Holography (NAH). We present a new filtering method, least squares method for filtering with restraint, which improves the stability of the reconstruction. The computer simulation experiment for the vibration and radiation of a round plate by means of the numerical method of NAH has been done and the effect of the new filtering method has been verified. The NAH imaging of radiation of a small loudspeaker using a scanning linear receiving array of 32 elements has been made and the preliminary results are given in the paper.

关键词： Acoustic holographic Filtering method Least square method.

用修正特征法模型求解高速VLSI中有耗互连线的瞬态响应

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电子学报 1999年第2期27卷 22-25页

作者：徐勤卫李征帆毛军发朱建政上海交通大学电子工程系

本文提出了用于高速集成电路系统中有耗互连线瞬态响应求解的一个计算模型及其相应的算法．传统的特征法在用于求解无耗传输线或满足ＬＧ＝ＲＣ的有耗传输线时具有简单的递归形式和较高的计算效率，但不能用于一般的有耗传输线．本文在... 详细信息

本文提出了用于高速集成电路系统中有耗互连线瞬态响应求解的一个计算模型及其相应的算法．传统的特征法在用于求解无耗传输线或满足ＬＧ＝ＲＣ的有耗传输线时具有简单的递归形式和较高的计算效率，但不能用于一般的有耗传输线．本文在特征法的基础上，通过适当的参数修正，建立了一般有耗传输线瞬态响应的近似特征模型，导出了其对时间变量递归形式的计算公式．该模型只需计算传输线两端的电流和电压，因而计算效率高且节省内存．数值实验结果表明，该算法可以达到相当高的精度．

关键词：大规模集成电路互连线特征法瞬态响应 VLSI

Modification of Maxwell model for conductivity prediction of carbon nanotubes-filled polymer composites with tunneling effect

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 25-36页

作者： Jue zhu Longyuan LI Ningtao zhu Zhejiang Provincial Engineering Research Center for the Safety of Pressure Vessel and Pipeline Key Laboratory of Impact and Safety Engineering (Ningbo University) Ministry of Education School of Engineering Computing and Mathematics University of Plymouth Xi'an Zhanshi Testing & Engineering Co.Ltd.

Carbon nanotubes(CNTs) have garnered great attention in recent years due to their outstanding electrical, thermal, and mechanical properties. The incorporation of small amounts of CNTs in polymers can substantially improve the sensitivity of the polymer's electrical conductivity. This paper presents a modified Maxwell model to evaluate the electrical conductivity of CNTs-filled polymer composites by introducing a transition zone to account for the tunneling effect. In this modified Maxwell model, the CNTs-filled polymer composite is modeled as a three-phase composite, consisting of a matrix(polymer), inclusions(CNTs), and a transition zone(tunneling zone). The effective electrical conductivity(EEC) of the composite is calculated based on the volume fractions and electrical conductivities of the matrix, inclusions, and transition zone. The model's validity is confirmed through the use of available test data, which demonstrates its capability to accurately capture the nonlinear conductivity behavior observed in CNTs-polymer composites. This study offers valuable insights into the design of high-performance conductive polymer nanocomposites, and enhances the understanding of electrical conduction mechanisms in CNT-dispersed polymer composites.

关键词： carbon nanotube (CNT) composite electrical conductivity Maxwell model O242.2 O441.1 polymer tunneling

New insight into the origin and evolution of the flora and fauna of Hainan Island,China

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Science China Earth Sciences 2025年第1期68卷 52-61页

作者： Hua zhu Center for Integrative Conservation Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesYunnan International Joint Laboratory of Southeast Asia Biodiversity ConservationYunnan Key Laboratory for the Conservation of Tropical Rainforests and Asian ElephantsMengla666303China

The origin of the biota of Hainan Island,China,remains a fundamental scientific *** studies on the biota,geological tectonics,and paleomagnetism proposed that during the Eocene,Hainan Island connected Vietnam and Guangxi,and then moved to the southeast to reach its present *** review mainly discusses its biota origin from molecular phylogeny and palaeobotanical *** formation and evolution of the biological groups of Hainan Island were identified via research on their genomes,phylogeny,and molecular *** research showed that the genera and species that appeared and diverged early in their evolution(i.e.,before the Miocene)can be explained by the land connection between Hainan Island,Vietnam,and Guangxi during the *** to Southeast Asian tectonic theory,in the Middle Miocene(at about 15 million years ago),Hainan Island had moved to its present *** population and genetic divergence of species with late divergence times(after 15 Ma)can be reasonably explained by the close proximity(or land connection)between Hainan Island and the Leizhou Peninsula,enabling genetic communication between Hainan Island and the Chinese mainland,but have exceptional *** have been obtained through palaeobotanical studies,showing that in the Eocene-Oligocene period,southwest China and Hainan Island had subtropical vegetation and ***,the fossil group in southeast China(in Maoming,near present-day Hainan Island)in the Late Eocene indicated a tropical rainforest vegetation and *** suggests that in the Paleogene,Hainan Island may have been located near or on the southwest border of Guangxi and northern Vietnam,rather than in its present *** floristic division of the flora of Hainan Island basically presents a northeast-southwest inclined distribution *** pattern can be explained by the counterclockwise rotation of Hainan Island during its movement to the southeast as prop

关键词： Molecular phylogeny Biogeography Paleobotany Origin of flora and fauna Hainan Island of China

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Stabilities of delay stochastic McKean-Vlasov equations in the G-framework

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Science China(Information Sciences) 2025年第1期68卷 255-277页

作者： Haiyan YUAN Quanxin zhu Department of Mathematics Heilongjiang Institute of Technology Key Laboratory of Computing and Stochastic Mathematics (Ministry of Education) School of Mathematics and Statistics Hunan Normal University

This article focuses on a type of stochastic Mc Kean-Vlasov equation in the G-framework(G-SMVE) and addresses the stability issue for delay stochastic Mc Kean-Vlasov equations in the G-framework(G-SMVDEs). Distribution dependence and uncertainty prevent us from directly applying the stochastic analysis method for stochastic Mc Kean-Vlasov equations(SMVEs)to G-SMVEs directly. To overcome this difficulty, we introduce definitions, including the derivative of a function with a law under the G-expectation and the Lions derivatives. Then we construct a new G-It? formula for G-SMVEs according to the G-It? formula for stochastic differential equations in the G-framework(G-SDEs) and the It? formula for SMVEs. Using the new G-It? formula and the Lyapunov functional method, we investigate the moment exponential stability and almost sure asymptotic stability of G-SMVDEs. To overcome the difficulty in obtaining the distribution dependence of the exact solution to the G-SMVDE, we introduce the empirical measure and the corresponding interacting particle system, and then prove the stability equivalence between the underlying G-SMVDE and the corresponding interacting particle system. Two examples are used to confirm our theoretical results.

关键词： delay stochastic McKean-Vlasov equations Wasserstein distance G-Brownian motion Lions derivative stability

基于静电纺丝双重负载聚苯胺的纳米纤维膜制备及其在废水处理中的应用

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现代纺织技术 2024年第10期32卷 48-55页

作者：朱建政崔靖萍周岚张国庆烟台市环境卫生管理中心山东烟台264000 浙江理工大学材料科学与工程学院杭州310018 浙江省现代纺织技术创新中心浙江绍兴312000

为了增强膜蒸馏对印染废水浓缩处理的效果,设计了双重负载聚苯胺纳米纤维膜,以提高废水蒸发浓缩的效率。首先在聚丙烯腈纺丝液中混合一定量纳米聚苯胺,利用静电纺丝制得聚苯胺掺杂纳米纤维膜,再通过表面接枝生长聚苯胺,形成双重负载聚... 详细信息

为了增强膜蒸馏对印染废水浓缩处理的效果,设计了双重负载聚苯胺纳米纤维膜,以提高废水蒸发浓缩的效率。首先在聚丙烯腈纺丝液中混合一定量纳米聚苯胺,利用静电纺丝制得聚苯胺掺杂纳米纤维膜,再通过表面接枝生长聚苯胺,形成双重负载聚苯胺纳米纤维膜。结果表明:通过双重负载提高了纳米纤维膜载体中聚苯胺含量且增加了膜的比表面积,膜的光热转换效应也显著提高。一个太阳光强度下膜表面温度可在5 min内迅速升温至70℃以上,显示出极好的光热转换性能。水蒸发测试发现,在双重聚苯胺光热转换作用下,该膜最高水蒸发速率达到1.66 kg/(m^(2)·h)。最后针对染料废水进行了浓缩实验,连续14 d的实验表明该膜具有良好的使用稳定性,使用前后水蒸发速率仅降低5.6%。经测试,使用过的膜经过再生处理后水蒸发速率仍达到1.60 kg/(m^(2)·h),表现出良好的抗污染和循环使用性能。上述研究结果为膜蒸馏技术的发展提供了有意义的参考,有助于新型蒸馏膜材料的开发。

关键词：静电纺丝光热材料聚苯胺膜蒸馏印染废水

“Slope-adsorption&plateau-pore filling”mechanism unlocking the potential of hard carbon anodes for“fast-charging&large-sized”batteries

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Science China Materials 2025年第1期68卷 309-311页

作者： Tian Liang Xiaoming zhu Hubei Key Laboratory of Radiation Chemistry and Functional Materials School of Nuclear Technology and Chemistry&BiologyHubei University of Science and TechnologyXianning 437100China

To date,there has been no report on fast-charging and Ahlevel sodium-ion batteries(SIBs)by utilizing thick hard carbon anodes that demonstrate prolonged cycling life and high areal capacity at high ***,the relationship among the complex structure of hard carbon,storage mechanism,and fastcharging performance in alkali-metal ion batteries has been a subject of ongoing debate[1,2].

关键词： mechanism charging utilizing

Chemical weathering in Manas River Basin:Driven by sulfuric acid or carbonic acid?

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Acta Geochimica 2025年第1期44卷 59-85页

作者： Jiaxin Zhang Bingqi zhu Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina

Carbonic acid produced by the dissolution of atmospheric and soil CO_(2)in water is usually the most dominant catalyst for chemical weathering,but a sulfuric aciddriven phenomenon,different from usual,was found in the orogenic belt watersheds dominated by silicate *** study,rooted in comprehensive field investigations in the Manas River Basin(MRB)north of the Tianshan Mountains,delves into the mechanisms and impacts of sulfuric and carbonic acid as catalysts driving diff erent types of chemical weathering in the Central Asian Orogenic *** analyses elucidate that carbonate weathering constitutes 52.4%of the total chemical weathering,while silicate and evaporite account for 18.6%and 25.3%,respectively,with anthropogenic activities and atmospheric precipitation having little eff *** estimated total chemical weathering rate in MRB is approximately 0.075×10^(6)mol/km^(2)/*** findings further suggest that,preceding carbonate precipitation(<10^(4)year),chemical weathering can absorb CO_(2).Subsequently,and following carbonate precipitation(10^(4)-10^(7)year),it will release CO_(2).The release significantly surpasses the global average CO_(2)consumption,contributing to a noteworthy climate *** study underscores the distinctive weathering mechanisms,wherein sulfuric acid emerges as the predominant *** quantity of sulfuric acid as a catalyst is approximately three times that of carbonic *** acid-driven carbonate rock weathering(SCW)is identified as the sole chemical weathering type with a net CO_(2)release eff *** CO_(2)release flux(5176 mol/km^(2)/year)is roughly 2.5 times the CO_(2)absorption by Ca-Mg silicate weathering,highlighting the pivotal role of chemical weathering in sourcing atmospheric CO_(2)over the timescales of carbonate precipitation and sulfate ***,this study posits that catalyst and transport limitations are the most plausible critical factors in *** interplay between s

关键词： Catchment chemical weathering Mid-latitude orogenic belt Sulﬁde oxidation Manas River Basin