检索结果-南通市图书馆

Applied Mathematics and Mechanics(English Edition) 2001年第3期22卷 282-293页

作者： JIANG fu-ru(江福汝) Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 P R China

A new method is applied to study the asymptotic behavior of solutions of boundary value problems for a class of systems of nonlinear differential equations u' = nu, epsilon nu' + f(x, u, u')nu' - g(x, u, u') nu = 0 (0... 详细信息

关键词： system of nonlinear differential equations boundary value problems asymptotic solution

在线全文

学校读者我要写书评

暂无评论

附加阻尼比与多高层混凝土结构地震响应研究

价值工程 2025年第2期44卷 98-100页

作者：秦桧荣付汝高昆明理工大学昆明650500 淮安市城市建设设计研究院有限公司云南分公司昆明650206 云南能晔建设有限公司昆明650206

附加阻尼比是指结构消能减震设计中,阻尼器(消能装置)附加给原结构的有效阻尼比。其作用是吸收或消耗地震波传递到结构上的能量,减小结构的地震反应。从结构力学知识和结构抗震设计规范的规定可知,当结构附加阻尼比时,建筑结构本身承担... 详细信息

附加阻尼比是指结构消能减震设计中,阻尼器(消能装置)附加给原结构的有效阻尼比。其作用是吸收或消耗地震波传递到结构上的能量,减小结构的地震反应。从结构力学知识和结构抗震设计规范的规定可知,当结构附加阻尼比时,建筑结构本身承担的地震作用小于不附加阻尼比的结构,且附加阻尼比越大,建筑结构承担的地震作用减少越明显。本文旨在研究不同阻尼比对地震作用的影响,总结其变化规律。

关键词：附加阻尼比多高层混凝土结构地震响应

A Perimidin Derivative with Multiple Redox Centers as an Anode for Lithium-ion Batteries

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2020年第2期39卷 263-268,185页

作者： fu Yu-ru LIU Qin SUN Chuan-fu CAS Key Laboratory of Design and Assembly of functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100039China

Organic molecules are attractive electrode materials for rechargeable batteries owing to their sustainability, low cost, and light weight. In this work, we report a new organic anode, a perimidin derivative 1,3,5-tri(1 H-perimidin-2-yl)-benzene(TPB), for lithium-ion batteries. The TPB structure contains multiple redox centers including π-conjugated benzene ring, C=N, and-NH groups and delivers a high reversible specific capacity of 300 mAh/g at 50 mA/g under a six-electron redox reaction. Moreover, TPB exhibits excellent rate capability and long-term cyclability with 98.1% capacity retention over 1500 cycles at 1000 mA/g. The results may open new opportunities for the development of low-cost and long-lifespan lithium-ion batteries.

关键词： lithium-ion batteries organic electrode multiple redox centers long lifespan

Synthesis of Mesostructured Iron Oxides with Potential As(V) Adsorption Application

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2012年第4期28卷 559-562页

作者： LI Fei-hu fu Xiao-ru HUANG Jie ZHAI Jian-ping Jiangsu Provincial Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044P.R.China State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210046P.R.China

Mesostructured iron oxides（MIOs） were nanocasted from a plugged hexagonal templated silica（PHTS） with a Brunauer-Emmett-Teller（BET） surface area of 694 m 2 /*** of X-ray diffraction（XRD）,transmission electron microscopy（TEM） and N 2 adsorption-desorption suggest that the nanocasted MIOs are synthetic hematite（α-Fe2O3） with a wormhole-like mesoporous ***（V） adsorption test shows that the selected MIO—MIO-500（calcinated at 500 °C） with a BET surface area of 82 m^ 2 /g has a maximum adsorption capacity of 5.39 mg/g for As（V）,which is 2.5 times as large as that of natural hematite *** study suggests that MIOs could be potentially used as the adsorbent of As（V） in wastewater.

关键词： Mesostructured iron oxide Plugged hexagonal templated silica(PHTS) Nanocasting Arsenate Adsorption

ASYMPTOTIC SOLUTIONS OF BOUNDARY VALUE PROBLEMS FOR THIRD-ORDER ORDINARY DIFFERENTIAL EQUATIONS WITH TURNING POINTS

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2001年第4期22卷 394-403页

作者： JIANG fu-ru(江福汝) JIN Qi-nian(金其年) Shanghai Institute of Applied Mathematics and Mechanics Shanghai UniversityShanghai 200072 P R China Department of Mathematics Nanjing University Nanjing 210000 P R China

Boundary value problem; for third-order ordinary differential equations with turning points are studied as follows : epsilon gamma ' ' + f(x ; epsilon) gamma ' + g(x ; epsilon) gamma ' +h(x ; epsilon) gamma = 0 (- a < x < b, 0 epsilon 1), where f(x ; 0) has several multiple zero points in ( - n, b). the necessary conditions for exhibiting resonance is given, and the uniformly valid asymptotic solutions and the estimations of remainder terms are obtained.

关键词： boundary value problems ordinary differential equations turning points asymptotic solutions

Inorganic-organic Hybrid Cathodes for Fast-charging and Long-cycling Zinc-ion Batteries

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2021年第11期40卷 1535-1540,1410页

作者： QIU Zi-Wei fu Yu-ru CHEN Ming ZHAO Jun-Mei SUN Chuan-fu University of Chinese Academy of Sciences Beijing 100039China CAS Key Laboratory of Design and Assembly of functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China

Here we report the utilization of inorganic-organic hybrid(IOH)as a new type of cathode material for aqueous Zn-ion *** IOH possessing a unique lattice-water-rich layered structure achieves high long-term cycling stability(81.5%capacity retention over 1500 cycles)and ultrafast charging capability(~90%state of charge about 1 minute).

关键词： zinc-ion batteries inorganic-organic hybrid fast-charging cathode

同方期刊数据库

Resistance risk and molecular mechanism associated with resistance to picoxystrobin in Colletotrichum truncatum and Colletotrichum gloeosporioides

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2023年第12期22卷 3681-3693页

作者： SHI Niu-niu LIAN Jin-pan QIU De-zhu CHEN fu-ru DU Yi-xin Institute of Plant Protection Fujian Academy of Agricultural SciencesFuzhou 350013P.R.China fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests Fuzhou 350013P.R.China Crop Research Institute Ningxia Academy of Agriculture and Forestry SciencesYinchuan 750002P.R.China

Anthracnose,caused by Colletotrichum truncatum and ***,is amongst the most serious diseases of soybean in ***,a quinone outside inhibitor fungicide,is commonly used for the control of *** resistance risk and mechanism in *** and *** are *** this study,the sensitivities of 128 *** and 121 *** isolates to picoxystrobin were investigated,and unimodal distributions were observed with average EC_(50)values of 0.7740 and 1.1561μg mL^(-1),*** picoxystrobin-resistant mutants of *** and six mutants of *** were acquired,with EC_(50)values varying from 5.40-152.96 and 13.53-28.30μg mL^(-1),*** to the parental isolates,mutants showed similar or higher relative fitness in conidial production and germination,and ***,the resistance risk of *** and *** to picoxystrobin is moderate to *** was positive cross-resistance between picoxystrobin and pyraclostrobin,but not between picoxystrobin and fluazinam,difenoconazole,or *** G143S mutation in Cyt b protein was detected in seven high-resistant mutants of ***(RF>100),and G137R occurred in four moderate-resistant mutants(RFfungicide effectiveness.

关键词： Colletotrichum truncatum Colletotrichum gloeosporioides picoxystrobin point mutation Cyt b molecular docking

Structure splitting framework for data-layout optimization

在线全文

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2009年第5期16卷 107-113页

作者： fu Xiong , WANG ru-chuan College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210003, China [a]College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China

To improve data cache performance, optimizing program data layout by data reorganization has become an important method of decreasing the impact of increasing gap of speed between processor and memory. In this article, a structure splitting framework with an analysis model named structure field relation graph （SFRG） is presented to optimize program data layout. The SFRG can be used to quantify relationship between fields. It helps to find an optimal layout for structure as well as the optimal program data layout. And the data cache performance is improved through SFRG-based structure splitting. Experiments show that this framework is effective in optimizing program data layout and improving the performance of data cache and whole program.

关键词： program optimization structure splitting data layout cache performance

Some Applications of Perturbation Method in Thin Plate Bending Problems

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 1980年第1期1卷 35-53页

作者： Kiang, fu-ru ( Department of Mathematics, futain University, Shanghai) Department of Mathematics Futain University Shanghai

In this paper,problems of bending of thin plates under the combined action of lateral loadingand in-plane forces are studied by means of perturbation method.

关键词： Some Applications of Perturbation Method in Thin Plate Bending Problems

Optimizations for High Performance Network Virtualization

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Computer Science & Technology 2016年第1期31卷 107-116页

作者： Fan-fu Zhou ru-Hui Ma Jian Li Li-Xia Chen Wei-Dong Qiu Hai-Bing Guan Shanghai Key Laboratory of Scalable Computing and Systems Shanghai Jiao Tong University Shanghai 200240 China

The increasing requirements of intensive interoperaterbility among the distributed nodes desiderate the high performance network connections, owing to the substantial growth of cloud computing and datacenters. Network I/O virtualization aggregates the network resource and separates it into manageable parts for particular servers or devices, which provides effective consolidation and elastic management with high agility, flexibility and scalability as well as reduced cost and cabling. However, both network I/O virtualization aggregation and the increasing network speed incur higher traffic density, which generates a heavy system stress for I/O data moving and I/O event processing. Consequently, many researchers have dedicated to enhancing the system performance and alleviating the system overhead for high performance networking virtualizatiou. This paper first elaborates the mainstreaming I/O virtualization methodologies, including device emulation, split-driver model and hardware assisted model. Then, the paper discusses and compares their specific advantages in addition to performance bottlenecks in practical utilities. This paper mainly focuses on the comprehensive survey of state- of-the-art approaches for performance optimizations and improvements as well as the portability management for network I/O virtualization. The approaches include various novel data delivery schemes, overhead mitigations for interrupt processing and adequate resource allocations for dynamic network states. Finally, we highlight the diversity of I/O virtualization besides the performance improvements in network virtualization infrastructure.

关键词： network virtualization single root I/O virtualization (SR-IOV) virtual machine monitor (VMM)