检索结果-南通市图书馆

AI in Chemical engineering: A New Chapter of Innovation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

engineering 2024年第8期39卷 1-2页

作者： Qilong Ren Key Laboratory of Biomass Chemical engineering of the Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China instiute of Zhejiang Universiy-Quzhou Quzhou 324000China

The integration of artificial intelli-gence(AI)into chemical engineering marks a transformative era,redefin-ing traditional methodologies with AI-driven *** has emerged as a powerful ally in tackling complex problems once considered *** chemical engineering grapples with increasingly complex systems and stringent sustainability targets,AI sets the stage for a new generation of solutions.

关键词： mount AI emerged

维普期刊数据库

结构设计驱动的橡胶类复合材料柔性传感器压阻性能设计研究进展

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2024年第1期40卷 155-182页

作者：尚家琛杨恒姚学锋陈浩森 Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Instiute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China School of Transportation Science and engineering Beihang University Beijing 100191China Department of engineering Mechanics AMLTsinghua UniversityBeijing 100084China

近年来,柔性应变及应力传感器因其灵敏度高、应变范围大、形式多样等显著优点引起研究人员的广泛关注.柔性传感器在可穿戴电子、智能机械、结构健康监测等领域有着重要的应用价值和广阔的市场前景.同时,这些新兴领域也对柔性传感器的性... 详细信息

近年来,柔性应变及应力传感器因其灵敏度高、应变范围大、形式多样等显著优点引起研究人员的广泛关注.柔性传感器在可穿戴电子、智能机械、结构健康监测等领域有着重要的应用价值和广阔的市场前景.同时,这些新兴领域也对柔性传感器的性能要求更为苛刻.导电橡胶复合材料具有高拉伸、高力敏、高稳定性的特点,是制备高性能柔性压力传感器的理想材料,进一步提升导电橡胶复合材料柔性传感器的性能是该领域发展重点之一,本文综述了导电橡胶类复合材料的制备方法和力电响应机理,重点介绍了通过结构设计提高柔性压力传感器性能的方法,包括内部导电网络结构设计、基体结构设计和导电聚合物复合材料整体结构设计等.同时,文章还介绍了柔性传感器的主要应用领域.最后,总结了柔性传感器目前发展中存在的问题,并对未来的发展方向进行了讨论。

关键词：柔性传感器柔性压力传感器应力传感器网络结构设计智能机械结构健康监测可穿戴导电橡胶

Profound loss of microbial necromass carbon in permafrost thaw-subsidence in the central Tibetan Plateau

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Climate Change Research 2024年第4期15卷 647-657页

作者： Wen-Ting ZHOU Quan-Lian LI Shi-Chang KANG Xiao-Dong WU Tian MA Xiao-Bo WU Xin XIONG Tanuj SHUKLA Maheswar RUPAKHETI Dipesh RUPAKHETI Da-He QIN Xiu-Feng YIN Cryosphere Research Station on the Qinghai-Tibet Plateau State Key Laboratory of Cryospheric ScienceNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Key Laboratory of Cryospheric Science and Frozen Soil engineering Norhwest Instiute of Eco-Evironment and ResourcesChinese Academy of Scienes Lanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems and College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou730020China Lushan Botanical Garden Chinese Academy of SciencesJiujiang 332900China Research Institute for Sustainability-Helmholtz Centre Potsdam Potsdam 14467Germany Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China

Climate warming is causing rapid permafrost degradation,including thaw-induced subsidence,potentially resulting in heightened carbon ***,our understanding of the levels and variations of carbon components in permafrost,particularly during the degradation process,remains *** uncertainties arising from this process lead to inaccurate assessments of the climate effects during permafrost *** vast expanses of permafrost in the Tibetan Plateau,there is limited research available on SOC components,particularly in the central Tibetan *** remarkable variations in hydrothermal conditions across different areas of the Tibetan Plateau,the existing limited studies make it challenging to assess the overall SOC components in the permafrost across the Tibetan Plateau and simulate their future *** this study,we examined the properties of soil organic carbon(SOC)and microbial necromass carbon(MicrobialNC)in a representative permafrost thaw-subsidence area at the southern edge of continuous permafrost in the central Tibetan *** results indicate that prior to the thaw-subsidence,the permafrost had a SOC content of 72.68±18.53 mg g^(-1),with MicrobialNC accounting for 49.6%.The thaw-subsidence of permafrost led to a 56.4%reduction in SOC,with MicrobialNC accounting for 70.0%of the lost *** constitutes the primary component of permafrost SOC,and it is the main component that is lost during thaw-subsidence *** in MicrobialNC are primarily correlated with factors pH,plant input,and microbial *** present study holds crucial implications for both the ecological and biogeochemical processes associated with carbon release from permafrost,and it furnishes essential data necessary for modeling the global response of permafrost to climate *** on this study and previous research,permafrost thawing in the Tibetan Plateau causes substantial loss of ***,there's remarkable heterogeneit

关键词： Tibetan Plateau Thaw-subsidence Soil organic carbon Microbial necromass carbon Amino sugars

Corrigendum to “Increasing the greenness of an organic acid through deep eutectic solvation and further polymerisation” [Green Energy & Environ 7 (4) (August 2022) 840–853]

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第3期9卷 596-596页

作者： Liteng Li Xiaofang Li Susu Zhang Hongyuan Yan Xiaoqiang Qiao Hongyan He Tao Zhu Baokun Tang College of Phamaceutical Science Instiute of Life Science and Green DevelopmentKey Laboratory of Medicinal Chemisty and Malecular Diagnosis of Ministry of EducationHebei UniversityBaoding071002China CAS Key Laboratony of Green Process and engineering Institute of Prcess EngineeringChinese Academy of SciencesBeijing010190China

The authors regret that the name of the ethic committee that approved the study and the reference number was omitted from the published *** this research,all animal experiments were performed in accordance with the Guide for the Care and Use of Laboratory Animals(US National Institutes of Healh)and were approved by the Animal Welfare and Ethical Committee of Hebei University(***-2020XG021,Baoding,China).

关键词： approved committee Hebei

QoS aware routing and wavelength allocation in optical burst switching networks using differential evolution optimization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Digital Communications and Networks 2018年第1期4卷 3-12页

作者： Ravi Sankar Barpanda Ashok Kumar Turuk Bibhudatta Sahoo Department of Computer Science & engineering National instiute of Technology Rourkela India 769008

The issue of burst losses imposes a constraint on the development of Optical Burst Switching （OBS） networks. Heavy burst losses strongly affect the Quality of Service （QoS） intended by end users. This article presents a QoS aware Routing and Wavelength Allocation （RWA） technique for burst switching in OBS networks. The RWA problem is modeled as a bi-objective Integer Linear Programming （ILP） problem, where objective functions are based on minimizing the number of wavelengths used and the number of hops traversed to fulfill the burst transmission requests for a given set of node pairs. The ILP model is solved using a novel approach based on a Differential Evolution （DE） algorithm. Analytical results show that the DE algorithm provides a better performance compared to shortest path routing, which is a widely accepted routing strategy for OBS networks.

关键词： Burst loss Optical burst switching Quality of service Routing and wavelength assignmentInteger linear programmingDifferential evolution

Phase Transfer Catalyzed Synthesis of 1, 2-Bis[(3-aryl)-s-triazolo-[3, 4-b]-[1, 3, 4]thiadiazole-6-yl]ethanes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2006年第6期17卷 755-756页

作者： De Jiang LI He Qing FU Department of Chemistry Yunyang Teachers College Hubei 442700 instiute of Chemical engineering South China University of Technology Guangzhou 510640

A series of new 1, 2-bis[（3-aryl）-s-triazolo[3, 4-b]-[1, 3, 4]thiadiazole-6-yl]ethanes were synthesized in 50-82% yield by cyclization of 3-aryl-4-amino-5-mercapto-1, 2, 4-triazole with butanedioic acid in the prese... 详细信息

关键词： 1,2,4-Triazoles bis-triazolothiadiazoles,synthesis.

维普期刊数据库

Genetic algorithm aided density functional theory simulations unravel the kinetic nature of Au(100) in catalytic CO oxidation

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2019年第6期30卷 1346-1350页

作者： Yi Fang Xueqing Gong Key Laboratory for Advanced Materials Centre for Computational Chemistry and Research Instiute of Industrial CatalysisSchool of Chemistry Molecular EngineeringEast China University of Science and Technology

Heterogeneous catalysis is of tremendous importance to modern industries. Exposed atoms of heterogeneous catalysts are heavily involved in surface processes such as the adsorption, activation, diffusion and reaction of substrate molecules. Surfaces of metal or metal oxide based catalysts are usually taken as hard templates that only undergo limited relaxation during catalytic reactions, especially in theoretical simulations. In this work, by using genetic algorithm (GA) aided density functional theory (DFT) calculations, we studied the surface processes involved in CO oxidation on the Au(100) surface. The use of GA greatly improves the capacity of DFT calculations in locating the potential energy surface (PES) of the surface reactions, and surprisingly, it has been found that the Au(100) surface can undergo drastic reconstruction under the influence of O adsorption and the adapted partially oxidized Au surface exhibits unique activities for subsequent adsorptions and reactions. This work depicts the kinetic nature of the Au (100) surface in its catalyzed reactions and also significantly expands our understanding of how surface atoms act in heterogeneous catalysis.

关键词： Gold catalysts Genetic algorithm Density functional theory Potential energy surface Surface reconstruction

维普期刊数据库

Fractional core-based collapse mechanism and structural optimization in complex systems

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2023年第9期66卷 168-183页

作者： Shubin SI Changchun LV Zhiqiang CAI Dongli DUAN Jurgen KURTHS Zhen WANG School of Mechanical engineering Northwestern Polytechnical University Key Laboratory of Industrial engineering and Intelligent Manufacturing(Ministry of Industry and Information Technology) School of Information and Control engineering Xi'an University of Architecture and Technology instiute of Physics Humboldt-University Potsdam Institute for Climate Impact Research

Catastrophic and major disasters in real-world systems ranging from financial markets and ecosystems, often show generic early-warning signals that may indicate a collapse. Hence, understanding the collapse mechanism of a complex network and predicting its process are of uttermost importance. However, these challenges are often hindered by the extremely high dimensionality of the underlying *** present here the concept of the fractional core(F-core) that considers the contribution of the network topology and dynamics to systematically analyze the collapse process in such networks, and encompass a broad range of dynamical systems, from mutualistic ecosystems to regulatory dynamics. We offer testable predictions on the tipping point, and, in particular, prove that the extinction of the maximum F-core of a network is an efficient indicator of whether a system completely collapses. The results show that the death of species or cells in a low-order F-core may improve the average density and have little influence on the tipping point. Generally, the principle of the F-core demonstrates how complex systems collapse and opens an innovative optimization strategy to uncover the optimal structure of systems.

关键词： collapse mechanism tipping point structural optimization complex systems phase transition

Flow dynamics in low aspect ratio dump combustor

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Propulsion and Power Research 2014年第4期3卷 187-195页

作者： N.P.Yadav Abhjit Kushari Department of Mechanical engineering BIETJhansi-284128India Department of Aerospace engineering Indian Instiute of TechnologyKampur 208016India

This paper repotts an experimental investigation of the flow field inside a low aspect ratio dump *** length of the combustor studied was less than the reattachment length for the separated *** exit of the combustor is tapered which supports the flow reversal from the exit *** flow field behaviour in the combustor is evaluated from pressure and velocity measurement *** velocity,stream function and pressure distribution inside the combustor are used to elucidate the presence of recircu lation and flow reversal from the exit section of the combustor for different Reynolds numbers.A small variation in Ums velocity was observed in axial direction while in the radial direction it was quite *** recirculation zones are recognized and the strength of the recirculation was seen to increase with flow Reynolds *** turbulence intensity in the recirculation and shear layer zone was seen to be higher than the potential core.

关键词： Dump combustor Flow dynamics Circulation Turbulence Stream function