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气候变化对植物多样性的影响研究综述

中国沙漠 2021年第1期41卷 59-66页

作者：何远政黄文达赵昕吕朋王怀海中国科学院西北生态环境资源研究院甘肃兰州730000 中国科学院大学北京100049

植物多样性是生态系统结构和功能的基础,气候变化已对其产生了深刻的影响,甚至于严重威胁。植物多样性的减少或丧失必然会影响生态系统结构和功能的稳定性,导致严重的生态、经济和社会后果。植物多样性对气候变化的响应受控于气温和水... 详细信息

植物多样性是生态系统结构和功能的基础,气候变化已对其产生了深刻的影响,甚至于严重威胁。植物多样性的减少或丧失必然会影响生态系统结构和功能的稳定性,导致严重的生态、经济和社会后果。植物多样性对气候变化的响应受控于气温和水分的动态平衡。本文系统总结了气候变暖和降水格局变化对植物多样性的影响,分析了气候变化对不同生态系统、群落类型、尺度范围(全球尺度、区域尺度、局地尺度)内植物多样性的影响,并归纳了差异的主要影响因素。最后对未来的研究方向做了展望。

关键词：气候变化气候变暖降水格局变化植物多样性

Memristive switching in two-dimensional BiSe crystals

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Nano Research 2023年第2期16卷 3188-3194页

作者： wenda Ma Junfeng Lu Shuaipeng Ge Li Zhang Fengchang huang Naiwei Gao Peiguang Yan Caofeng Pan College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China College of Physics Nanjing University of Aeronautics and AstronauticsNanjing 211106China State Key Laboratory of Bioelectronics Southeast UniversityNanjing 210096China

In spite of the explosive rise of research on memristive switching,more improvements in tunability,versatility,and hetero-integration are required through the discovery and application of novel materials.Herein,we report resistance switching in nano-thick two-dimensional(2D)crystals of bismuth selenium(BiSe).The BiSe devices exhibit nonvolatile bipolar resistance switching,volatile switching,and electrical bistable behavior in different conditions.The different memristive behavior of BiSe devices may be related to the concentration of Bi ions in this Bi-rich structure,which directly affects the capability of filaments forming.Furthermore,the external mechanical strain is applied in modulation of multi-layer BiSe devices.The memristive BiSe devices show a large on/off ratio of~10^(4)and retention time of~104 s.The discovery of memristive switching behavior in multi-layer BiSe is attributed to the forming of Bi filaments.The resistance switching behavior in multi-layer BiSe demonstrates the potential application in the flexible memories and functional integrated devices.

关键词： bismuth selenium heterostructure resistance switching memristors flexible memories strain engineering

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基于负荷特性的用电分析系统设计

电子技术（上海） 2023年第2期52卷 216-217页

作者：邱子川罗丽彭润海伍济开黄文达国网长沙供电公司湖南410035

阐述大数据技术模拟有序用电专家系统方案,通过Tableau仿真、数值拟合、进行非线性回归,整理出数学方程式形式的规则库,通过Mysql写出代码规则,设计智能生成的有序用电专家系统。

关键词：专家系统数值拟合非线性回归负荷特性

Water molecules and oxygen-vacancy modulation of vanadium pentoxide with fast kinetics toward ultrahigh power density and durable flexible all-solid-state zinc ion battery

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Journal of Energy Chemistry 2023年第10期85卷 581-591,I0014页

作者： wenda Qiu Yunlei Tian Shuting Lin Aihua Lei Zhangqi Geng Kaitao huang Jiancong Chen Fuchun huang Huajie Feng Xihong Lu Guangdong Industry Polytechnic College Guangzhou 510300GuangdongChina MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry KLGHEI of Environment and Energy ChemistrySchool of ChemistrySun Yat-Sen UniversityGuangzhou 510275GuangdongChina Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province Hainan Normal UniversityHaikou 571158HainanChina

Aqueous zinc ion battery(ZIB)with many virtues such as high safety,cost-effective,and good environmental compatibility is a large-scale energy storage technology with great application potential.Nevertheless,its application is severely hindered by the slow diffusion of zinc ions in desirable cathode materials.Herein,a technique of water-incorporation coupled with oxygen-vacancy modulation is exploited to improve the zinc ions diffusion kinetics in vanadium pentoxide(V_(2)O_5)cathode for ZIB.The incorporated water molecules replace lattice oxygen in V_(2)O_5,and function as pillars to expand interlayer distance.So the structural stability can be enhanced,and the zinc ions diffusion kinetics might also be promoted during the repeated intercalation/deintercalation.Meanwhile,the lattice water molecules can effectively enhance conductivity due to the electronic density modulation effect.Consequently,the modulated V_(2)O_5(H-V_(2)O_5)cathode behaves with superior rate capacity and stable durability,achieving 234 mA h g^(-1)over 9000 cycles even at 20 A g^(-1).Furthermore,a flexible all-solid-state(ASS)ZIB has been constructed,exhibiting an admirable energy density of 196.6 Wh kg^(-1)and impressive power density of 20.4 kW kg^(-1)as well as excellent long-term lifespan.Importantly,the assembled flexible ASS ZIB would be able to work in a large temperature span(from-20 to 70℃).Additionally,we also uncover the energy storage mechanism of the H-V_(2)O_5 electrode,offering a novel approach for creating high-kinetics cathodes for multivalent ion storage.

关键词： Interlayer engineering Water intercalation Vanadium pentoxide Ion diffusion kinetics Zinc ion battery

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基于自适应性粒子滤波器的目标追踪

舰船电子工程 2009年第9期29卷 132-134,204页

作者：苏功勋黄文达厦门大学物理系厦门361005

基于蒙特卡洛模拟的粒子滤波算法被广泛地应用于目标追踪领域。传统的粒子滤波算法在其追踪过程中所使用的粒子数通常是固定不变的,而在实际应用中,这会使算法缺乏高效性。针对这个问题,提出了一种自适应性粒子滤波器,它可以根据实际调... 详细信息

基于蒙特卡洛模拟的粒子滤波算法被广泛地应用于目标追踪领域。传统的粒子滤波算法在其追踪过程中所使用的粒子数通常是固定不变的,而在实际应用中,这会使算法缺乏高效性。针对这个问题,提出了一种自适应性粒子滤波器,它可以根据实际调整算法运行过程中使用的粒子数目,以使算法在保持对目标进行有效追踪的同时节省计算资源。仿真结果显示了算法的高效性。

关键词：粒子滤波器追踪自适应性

表面施胶水性聚氨酯对箱纸板耐折性能的影响及作用机理

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中国造纸 2024年第4期43卷 146-154页

作者：马朴杨云艳马玉芹徐芳吴闻达郭丽芳黄军济宁南天农科化工有限公司山东济宁272200 南京田家炳高级中学江苏南京210000 南京鼎兆新材料技术研发有限公司江苏南京210000

通过表面施胶不同特性(非离子型和阳离子型)的水性聚氨酯(WPU),研究了WPU施胶对箱纸板耐折性能的影响及作用机理。结果表明,WPU成膜性能、纸张结构和施胶工艺,对箱纸板耐折性能均有显著影响。非离子型的WPU-A膜强韧,拉伸强度达7.11 MPa... 详细信息

通过表面施胶不同特性(非离子型和阳离子型)的水性聚氨酯(WPU),研究了WPU施胶对箱纸板耐折性能的影响及作用机理。结果表明,WPU成膜性能、纸张结构和施胶工艺,对箱纸板耐折性能均有显著影响。非离子型的WPU-A膜强韧,拉伸强度达7.11 MPa;阳离子型的WPU-B膜中软易黏,拉伸强度很低。对于含水量低的纸张,在同等实验条件下,成膜柔韧、拉伸强度高的WPU施胶,有利于提高箱纸板的耐折性能。纸张结构越疏松,WPU施胶对其耐折度的提升幅度越大,且对于结构紧实的纸张,WPU膜强度与纸张强度显示出协同作用。对比4种不同施胶工艺所得箱纸板,干燥后双面施胶箱纸板的耐折性能提升效果最佳。

关键词：表面施胶剂水性聚氨酯箱纸板耐折性能

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High rate and ultralong life flexible all-solid-state zinc ion battery based on electron density modulated NiCo_(2)O_(4) nanosheets

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Journal of Energy Chemistry 2022年第7期31卷 283-291,I0008页

作者： wenda Qiu Yunlei Tian Zhenchao Lin Shuting Lin Zhangqi Geng Kaitao huang Aihua Lei Fuchun huang Huajie Feng Fengze Ding Yu Li Xihong Lu Guangdong Industry Polytechnic College Guangzhou 510300GuangdongChina MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry KLGHEI of Environment and Energy ChemistrySchool of ChemistrySun Yat-Sen UniversityGuangzhou 510275GuangdongChina Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province Hainan Normal UniversityHaikou 571158HainanChina

The development of zinc ion batteries (ZIBs) with large capacity,high rate,and durable cathode material is a crucial and urgent task.Ni Co_(2)O_(4)(NCO) has received ever-growing interest as a potential cathode material for ZIBs,owing to the high theoretical capacity,rich source,cost-effective,and versatile redox nature.However,due to the slow dynamics of the NCO electrodes,its practical application in highperformance systems is severely limited.Herein,we report an electron density modulated NCO nanosheets (N-NCO NSs) with high-kinetics Zn^(2+)-storage capability as an additive-free cathode for flexible all-solid-state (ASS) ZIBs.By virtue of the enhanced electronic conductivity,improved reaction kinetics,and increased active sites,the optimized N-NCO NSs electrode delivers a high capacity of 357.7 m Ah g^(-1)at 1.0 A g^(-1)and a superior rate capacity of 201.4 m Ah g^(-1)at 20 A g^(-1).More importantly,a flexible ASS ZIBs device is manufactured using a solid polymer electrolyte of a poly (vinylidene fluoride hexafluoropropylene)(PVDF-HFP) film.The flexible ASS ZIBs device shows superb durability with 80.2%capacity retention after 20,000 cycles and works well in the range of-20–70℃.Furthermore,the flexible ASS ZIBs achieves an impressive energy density as high as 578.1 W h kg^(-1)with a peak power density of 33.6 k W kg^(-1),substantially outperforming those latest ZIBs.This work could provide valuable insights for constructing high-kinetics and high-capability cathodes with long-term stability for flexible ASS ZIBs.

关键词： Electron densities modulation NiCo_(2)O_(4)nanosheets All-solid-state Flexible Zinc ion batteries

Tailoring synergetic catalytic interface of VPO/Ni_(2)P to boost hydrogen evolution under alkaline conditions

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Journal of Energy Chemistry 2022年第2期31卷 674-680页

作者： Wenli Xu Qiqi Li wenda Zhong Bing Sun Qiang huang Xu Nan Yinhong Gao Yao Yang Qin Zhang Nianjun Yang Xuanke Li School of Chemistry and Chemical Engineering Wuhan University of Science and TechnologyWuhan 430081HubeiChina Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan UniversityChangsha 410082HunanChina Institute of Materials Engineering University of SiegenSiegen 57076Germany

Design of the catalyst for efficient water dissociation and hydrogen recombination is paramount in enhancement of the alkaline water electrolysis kinetics.Herein,we reported a delicate hierarchical(VO)_(2) P_(2)O_(7)-Ni_(2) P@NF(VPO-Ni_(2) P@NF)hybrid catalyst that operated efficiently in alkaline media.The VPO and Ni_(2) P respectively act as the water dissociation promoter and the hydrogen recombination center,which synergistically propel water adsorption/dissociation and H intermediates recombination.The resulting synergistic interfaces between VPO and Ni_(2) P are verified to afford the catalyst an outstanding performance for hydrogen evolution reaction in alkaline media with an overpotential of 154 mV at 10 mA cm^(-2),Tafel slope of 65 mV dec^(-1),and remarkable durability.Furthermore,the catalyst presents the potential for overall water splitting.This work may shed fresh light on the high-performance electrocatalyst design and the application of VPO on water electrolysis.

关键词： Alkaline water electrolysis Interface engineering (VO)_(2)P_(2)O_(7) Ni_(2)P

Greatly Enhanced Methanol Oxidation Reaction of CoPt Truncated Octahedral Nanoparticles by External Magnetic Fields

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Energy & Environmental Materials 2023年第5期6卷 201-210页

作者： Mengyuan Zhu Yi Wang Yanfei Wu Jialong Liu Jingyan Zhang He huang Xinqi Zheng Jianxin Shen Ruijie Zhao wenda Zhou Shouguo Wang Beijing Advanced Innovation Center for Materials Genome Engineering School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China Department of Physics and Electronics School of Mathematics and PhysicsBeijing University of Chemical TechnologyBeijing 100029China

Tunable behavior in electrocatalysis by external multifields,such as magnetic field,thermal field,and electric field,is the most promising strategy to expand the theory,design,and synthesis of state-of-the-art catalysts and the cell in the near future.Here,a systematic investigation for the effect of external magnetic field and thermal field on methanol oxidation reactions(MOR)in magnetic nanoparticles is reported.For Co_(42)Pt_(58)truncated octahedral nanoparticles(TONPs),the catalytic performance in MOR is greatly increased to the maximum of 14.1%by applying a magnetic field up to 3000 Oe,and it shows a monotonical increase with increasing working temperature.The magnetic enhanced effect is closely related to the Co content of Co_(x)Pt_(100-x)TONPs.Furthermore,the enhancement effect under a magnetic field is more obvious for Co_(42)Pt_(58)TONPs annealed at 650℃.First-principle calculation points out that the magnetic fields can facilitate the dehydrogenation of both methanol and water by suppression of entropy of the electron spin and lowering of the activation barrier,where OH_(ad)intermediates on Co sites play a more important role.The application of magnetic fields together with thermal fields in MOR provides a new prospect to manipulate the performance of direct methanol fuel cells,which will accelerate their potential applications.

关键词： external magnetic fields first-principle calculation methanol oxidation reaction Pt-based magnetic nanomaterials