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Pedosphere 2012年第6期22卷 870-877页

作者： ZHANG Yu YU peng peng yun-feng LI Xue-Xiun CHEN Fan-Jun LI Chun-Jian Key Laboratory of Plant-Soil Interactions Ministry of EducationDepartment of Plant NutritionChina Agricultural UniversityBeijing 100193(China)

Plants have diverse strategies to cope with phosphorus （P） deficiency. To better understand how maize responds to P deficiency, a field experiment with two P levels, 0 and 100 kg P205 ha-1 （P0 and P100, respectively）, was carried out as a part of a long-term Pfertilizer field trial. Plant and soil analyses showed that P-deficient maize reduced its growth rate, increased P use efficiency, and formed more thin roots with the diameter less than 0.6 mm at jointing and silking stages, compared to the plants treated with P100. Further, there were no differences in major inorganic P fractions （Ca2-P, Cas-P, Al-P, Fe-P, occluded P and Ca10-P） between the rhizospheric and bulk soils at each harvest, even when soil Olsen-P was only 1.38 mg kg-1. These results suggested that maize responded to P deficiency by reducing the internal P demand for growth and increasing P acquisition ability by favorable root morphological alteration at low carbon cost.

关键词： inorganic phosphorus fractions phosphorus starvation rhizosphere root length root morphology

Dependence of Performance of Organic Light-emitting Devices on Sheet Resistance of Indium-tin-oxide Anodes

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Chemical Research in Chinese Universities 2006年第4期22卷 427-431页

作者： ZHOU Liang ZHANG Hong-jie YU Jiang-bo MENG Qing-guo peng Chun-yun LIU feng-yi DENG Rui-ping peng Ze-ping LI Zhe-feng Key Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China

The dependence of the performance of organic light-emitting devices（OLEDs） on the sheet resistance of indiumtin-oxide（ITO） anodes was investigated by measuring the steady state current density brightness voltage characteristics and the electroluminescent spectra. The device with a higher sheet resistance anode shows a lower current density, a lower brightness level, and a higher operation voltage. The electroluminescence（EL） efficiencies of the devices with the same structure but different ITO anodes show more complicated differences. Furthermore, the shift of the light-emitting zone toward the anode was found when an anode with a higher sheet resistance was used. These performance differences are discussed and attributed to the reduction of hole injection and the increase in voltage drop over ITO anode with the increase in sheet resistance.

关键词： Organic light-emitting device(OLED) Indium-tin-oxide(ITO) Sheet resistance Balance of holes and electrons

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang feng Gao Yu-Gui peng peng Wu Zong-Lin Li Xue-feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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微机械中微观力的几个关键问题分析

哈尔滨工业大学学报 2006年第8期38卷 1318-1322页

作者：李瑰贤彭云峰哈尔滨工业大学机电学院哈尔滨150001

基于范德华势与Lennard-Jones势两种分子作用势模型,提出一种圆截球方法,对分子与半空间体以及微球与半空间体之间的分子作用势(力)进行了计算;并通过定义非维度量和改变圆截球的半径分析了有关分子间作用力的有效作用范围,以及利用范... 详细信息

基于范德华势与Lennard-Jones势两种分子作用势模型,提出一种圆截球方法,对分子与半空间体以及微球与半空间体之间的分子作用势(力)进行了计算;并通过定义非维度量和改变圆截球的半径分析了有关分子间作用力的有效作用范围,以及利用范德华势与Lennard-Jones势表示分子间作用力的表现效果问题;最后讨论了将分子间作用力作为表面力处理的问题.

关键词：微观力分子作用力圆截球法范德华势与Lennard—Jones势非维度量

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微冲头的微观粘附力及预接触变形分析

哈尔滨工程大学学报 2006年第2期27卷 268-271,300页

作者：李瑰贤彭云峰张欣哈尔滨工业大学机电学院黑龙江哈尔滨150001 美国亚利桑那州立大学计算机学院 az85287

有关微观物体的粘附力与变形分析在微机械和表面物理中越来越重要.文章以表面形状由幂函数描述的轴对称微冲头与半空间体为研究对象,分析作用于微冲头上的分子间作用力和液桥张力,分析了在微观力作用下的微冲头接触前的弹性变形.最后以... 详细信息

有关微观物体的粘附力与变形分析在微机械和表面物理中越来越重要.文章以表面形状由幂函数描述的轴对称微冲头与半空间体为研究对象,分析作用于微冲头上的分子间作用力和液桥张力,分析了在微观力作用下的微冲头接触前的弹性变形.最后以液桥张力作用力下微冲头的特例———微球为对象,分析了液桥体积对微冲头顶端竖向变形的影响.分析结果表明,小间距时,作用于微冲头顶端的液桥力随间距的增大而减小,并随液桥体积的增大而增大.在较大间距时,液桥力与液桥体积之间的关系却出现了一种波动现象,而在小间距时,微冲头的变形随液桥体积的增加而减小,同时随液桥体积变化而先增后减的波动,大间距时这种波动现象愈加明显.微冲头的粘附接触特性中出现的这种波动现象也说明了微观尺寸效应的存在.

关键词：微冲头微观力液桥力微观尺寸效应

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入侵检测灰色空间模型及应用

电子科技大学学报 2012年第3期41卷 453-458页

作者：彭云峰何模雄隆克平北京科技大学计算机与通信工程学院北京海淀区100083 电子科技大学通信与信息工程学院成都611731

建立了基于粗糙集理论的入侵检测灰色空间模型,根据信息增益设计等价类获取和约简算法,提出了一种新的入侵检测系统模型。运用KDDCUP99数据集对网络入侵检测进行了测试。分析和对比实验结果表明,该模型具有分类规则简单、检测时间短和... 详细信息

建立了基于粗糙集理论的入侵检测灰色空间模型,根据信息增益设计等价类获取和约简算法,提出了一种新的入侵检测系统模型。运用KDDCUP99数据集对网络入侵检测进行了测试。分析和对比实验结果表明,该模型具有分类规则简单、检测时间短和准确率高等特点,克服了检测系统不能有效判别未知行为的瓶颈。

关键词：灰色空间模型信息增益入侵检测粗糙集理论白化处理

Designing Electronic Structures of Multiscale Helical Converters for Tailored Ultrabroad Electromagnetic Absorption

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Nano-Micro Letters 2025年第1期17卷 439-455页

作者： Zhaobo feng Chongbo Liu Xin Li Guangsheng Luo Naixin Zhai Ruizhe Hu Jing Lin Jinbin peng Yuhui peng Renchao Che Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle School of Environmental and Chemical EngineeringNanchang Hangkong UniversityNanchang 330063People’s Republic of China School of Physics and Materials Nanchang UniversityNanchang 330031People’s Republic of China Key Laboratory of Nondestructive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering and TechnologyFudan UniversityShanghai 200438People’s Republic of China

Atomic-scale doping strategies and structure design play pivotal roles in tailoring the electronic structure and physicochemical property of electromagnetic wave absorption(EMWA)***,the relationship between configuration and electromagnetic(EM)loss mechanism has remained ***,drawing inspiration from the DNA transcription process,we report the successful synthesis of novel in situ Mn/N co-doped helical carbon nanotubes with ultrabroad EMWA *** calculation and EM simulation confirm that the orbital coupling and spin polarization of the Mn–N4–C configuration,along with cross polarization generated by the helical structure,endow the helical converters with enhanced EM *** a result,HMC-8 demonstrates outstanding EMWA performance,achieving a minimum reflection loss of−63.13 dB at an ultralow thickness of 1.29 *** precise tuning of the graphite domain size,HMC-7 achieves an effective absorption bandwidth(EAB)of 6.08 GHz at 2.02 mm ***,constructing macroscale gradient metamaterials enables an ultrabroadband EAB of 12.16 GHz at a thickness of only 5.00 mm,with the maximum radar cross section reduction value reaching 36.4 dB *** innovative approach not only advances the understanding of metal–nonmetal co-doping but also realizes broadband EMWA,thus contributing to the development of EMWA mechanisms and applications.

关键词： Metal-nonmetal co-doping 3d-2p orbital coupling Spin polarization Helical structure Broadband EM wave absorption

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基于异构多核的CCA并行构件模型

计算机应用研究 2014年第12期31卷 3659-3662页

作者：彭云峰张炜安阳工学院计算机科学与信息工程学院河南安阳455000

并行构件技术的出现提高了并行软件的开发效率,但现有的并行构件技术缺乏对异构多核平台的支持。为了提高并行构件程序在异构平台上的执行性能,扩展CCA(通用构件体系结构)并行构件模型支持CCA异构并行构件,提出了一种异构的CCA并行构件... 详细信息

并行构件技术的出现提高了并行软件的开发效率,但现有的并行构件技术缺乏对异构多核平台的支持。为了提高并行构件程序在异构平台上的执行性能,扩展CCA(通用构件体系结构)并行构件模型支持CCA异构并行构件,提出了一种异构的CCA并行构件模型。使用管理者—工人模式调度CCA异构并行构件内的计算任务到异构多核平台上加速执行。在CCA构件工具包的基础上实现了支持扩展CCA并行构件模型的编译系统和运行时框架。在CELL BE和GPU两种异构多核处理器上进行的实验证明了提出的方法比原始的CCA构件程序具有较优的性能。提出的并行构件模型应用在并行程序开发中可以提高并行程序的性能。

关键词：并行计算并行构件异构多核处理器并行构件模型

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-peng Wang Guo-Cui Mao Hui-Lin Jiang Bao-Xia Dong yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： CO 2 methanation Metal hydride Ni catalysts Carbonate Metal-carbonate interface

Ru doping triggering reconstruction of cobalt phosphide for coupling glycerol electrooxidation with seawater electrolysis

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Journal of Energy Chemistry 2025年第1期100卷 317-326页

作者： Binglu Deng Jie Shen Jinxing Lu Chuqiang Huang Zhuoyuan Chen feng peng yunpeng Liu School of Materials Science and Hydrogen Energy Foshan University School of Chemistry and Chemical Engineering Guangzhou University Guangdong Key Laboratory for Hydrogen Energy Technologies

Seawater electrolysis is a promising approach for sustainable energy without relying on precious ***,the large-scale seawater electrolysis is hindered by low catalytic efficiency and severe anode corrosion caused by the harmful *** contrast to the oxygen evolution reaction （OER）and chlorin ion oxidation reaction （ClOR）,glycerol oxidation reaction （GOR） is more thermodynamically and kinetically favorable ***,a Ru doping cobalt phosphide （Ru-CoP2） is proposed as a robust bifunctional electrocatalyst for seawater electrolysis and GOR,for the concurrent productions of hydrogen and value-added *** in situ and ex situ characterization analyses demonstrated that Ru doping featured in the dynamic reconstruction process from Ru-CoP2to Ru-CoOOH,accounting for the superior GOR *** coupling GOR with hydrogen evolution was realized by employing Ru-CoP2as both anode and cathode,requiring only a low voltage of 1.43 V at 100 mA cm-2,which was 250 m V lower than that in alkaline *** work guides the design of bifunctional electrocatalysts for energy-efficient seawater electrolysis coupled with biomass resource upcycling.

关键词： Anodes