检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

稀土元素对ZL101合金中的α相形貌影响

南昌大学学报（理科版） 2007年第6期31卷 554-556页

作者：郑志强叶晴陈克燕占多产易荣喜南昌大学机电学院江西南昌330029 井冈山学院江西井冈山343608

从热力学和动力学的条件上,研究了稀土元素加入到ZL101铝合金后,稀土元素对初生相α相生长情况的影响。研究表明:由于稀土元素的存在,改变了α相生长过程中α相-与液相间的界面条件,促进α相的球化生长,这种促进效果存在一个稀土最佳的... 详细信息

从热力学和动力学的条件上,研究了稀土元素加入到ZL101铝合金后,稀土元素对初生相α相生长情况的影响。研究表明:由于稀土元素的存在,改变了α相生长过程中α相-与液相间的界面条件,促进α相的球化生长,这种促进效果存在一个稀土最佳的加入量,本试验结果,最佳的加入量为0.5%,并稀土元素的加入都会细化α相晶粒。

关键词：半固态铝硅合金凝固稀土

在线全文

学校读者我要写书评

暂无评论

电磁烹饪设备发展现况分析

粮油食品科技 2023年第3期31卷 112-119页

作者：王侨沈灿铎刘永新绳以健刘毅孟令卿军事科学院系统工程研究院北京100141

采取文献资料汇总、问卷调查分析等手段,多角度探析了电磁加热食品技术及电磁烹饪技术的总体发展概况。围绕电磁加热食品设备的主要构成与功能、技术要素、核心技术指标以及研究热点,梳理了当前电磁烹饪食品技术的总体研究概况。聚焦商... 详细信息

采取文献资料汇总、问卷调查分析等手段,多角度探析了电磁加热食品技术及电磁烹饪技术的总体发展概况。围绕电磁加热食品设备的主要构成与功能、技术要素、核心技术指标以及研究热点,梳理了当前电磁烹饪食品技术的总体研究概况。聚焦商用电磁灶产品,基于问卷调研法,分析了电磁灶的市场应用概况以及主要使用问题。针对当前电磁烹饪产品日益凸显的问题现状,提出了规范市场秩序、提升技术前瞻性的未来发展建议。

关键词：电磁加热研究热点发展概况存在问题

Recent Advances in Fibrous Materials for Hydroelectricity Generation

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge duo Xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao Yong Du Zhe Sun Weilin Xu Jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

Intelligent Detection Model Based on a Fully Convolutional Neural Network for Pavement Cracks

在线全文

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2020年第6期123卷 1267-1291页

作者： duo Ma Hongyuan Fang Binghan Xue Fuming Wang Mohammed AMsekh Chiu Ling chan School of Water Conservancy Engineering Zhengzhou UniversityZhengzhou450001China National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology Zhengzhou450001China Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety Zhengzhou450001China Civil Engineering Department College of EngineeringUniversity of BabylonBabylonIraq Institute of Structural Mechanics Bauhaus Universität WeimarWeimarGermany

The crack is a common pavement failure problem.A lack of periodic maintenance will result in extending the cracks and damage the pavement,which will affect the normal use of the ***,it is significant to establish an efficient intelligent identification model for pavement *** neural network is a method of simulating animal nervous systems using gradient descent to predict results by learning a weight *** has been widely used in geotechnical engineering,computer vision,medicine,and other ***,there are three major problems in the application of neural networks to crack *** are too few layers,extracted crack features are not complete,and the method lacks the efficiency to calculate the whole *** this study,a fully convolutional neural network based on ResNet-101 is used to establish an intelligent identification model of pavement crack *** method,using a convolutional layer instead of a fully connected layer,realizes full convolution and accelerates *** region proposals come from the feature map at the end of the base network,which avoids multiple computations of the same *** hard example mining and data-augmentation techniques are adopted to improve the model’s recognition *** trained and tested Concrete Crack Images for Classification(CCIC),which is a public dataset collected using smartphones,and the Crack Image Database(CIDB),which was automatically collected using vehicle-mounted charge-coupled device cameras,with identification accuracy reaching 91.4%and 86.4%,*** proposed model has a higher recognition accuracy and recall rate than Faster RCNN and different depth models,and can extract more complete and accurate crack features in *** also analyzed translation processing,fuzzy,scaling,and distorted *** proposed model shows a strong robustness and stability,and can automatically identify image cracks of different *** has broad application

关键词： Fully convolutional neural network pavement crack intelligent detection crack image database

Submanifolds of P^(n)(l)with Splitting Tangent Sequence

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2022年第2期38卷 397-405页

作者： duo LI School of Mathematics(Zhuhai) Sun Yat-sen UniversityZhuhai 519082P.R.China

Let l be a line in a projective space *** consider the blowing up P^(n)(l)of Pnalong *** that X is a smooth closed subvariety of P^(n).If the strict transform of X in P^(n)(l)has a splitting tangent sequence and dim X... 详细信息

关键词： Blowing up tangent sequence splitting

Effect of conical intersection of benzene on non-adiabatic dynamics

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2022年第8期31卷 367-371页

作者： duo-duo Li Song Zhang State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China

The effect of conical intersection on the excited dynamics of benzene is studied by ab initio theory of electronic structure,which provides an important insight into photophysical and photochemical *** on the CASSCF(6,6)/6-31+G(d,p)method,the topological structures of conical intersections S_(1)/S and S_(2)/S_(1)of benzene,as well as the optimal structures of the ground state(S)and excited states(S_(1),S_(2)),are *** energy minima of the S_(1)state and S_(2)state are estimated at 4.608 e V and 6.889 e V,*** addition,the energy values of the conical intersections of S_(1)/S and S_(2)/S_(1)are predicted to be 5.600 e V and 6.774 e *** to the topological structures and energy values of the S_(2)/S_(1)and S_(1)/S conical intersections,the photophysical behavior of benzene excited to the S_(2)state and the effects of the S_(2)/S_(1)and S_(1)/S conical intersections are discussed in detail.

关键词： conical intersection nonadiabatic dynamics ultrafast relaxation quantum chemical calculations

A comprehensive survey on Segment Routing Traffic Engineering

在线全文

学校读者我要写书评

暂无评论

Digital Communications and Networks 2023年第4期9卷 990-1008页

作者： duo Wu Lin Cui Department of Computer Science Jinan UniversityGuangzhou510632China

Traffic Engineering(TE)enables management of traffic in a manner that optimizes utilization of network resources in an efficient and balanced ***,existing TE solutions face issues relating to scalability and *** recent years,Segment Routing(SR)has emerged as a promising source routing *** one of the most important applications of SR,Segment Routing Traffic Engineering(SR-TE),which enables a headend to steer traffic along specific paths represented as ordered lists of instructions called segment lists,has the capability to overcome the above challenges due to its flexibility and *** this paper,we conduct a comprehensive survey on SR-TE.A thorough review of SR-TE architecture is provided in the first place,reviewing the core components and implementation of SR-TE such as SR Policy,Flexible Algorithm and SR-native *** of SR-TE are also discussed,as well as its major ***,we dwell on the recent SR-TE researches on routing optimization with various intents,e.g.,optimization on link utilization,throughput,QoE(Quality of Experience)and energy ***,node management for SR-TE are investigated,including SR node deployment and candidate node ***,we discuss the existing challenges of current research activities and propose several research directions worth of future exploration.

关键词： Segment routing Traffic engineering SR Policy Routing optimization Segment list computation

Two-dimensional Irreducible Algebraic Semigroups

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2018年第3期34卷 532-541页

作者： duo LI Yau Mathematical Sciences Center Tsinghua University

We study two-dimensional irreducible projective smooth algebraic semigroups. Minimal surface semigroups with Kodaira dimension at most one are partially classified. We also calculate the local dimension of the moduli ... 详细信息

关键词： Algebraic semigroup algebraic surface

Is it really good for you to eat fat as much as you could?

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2018年第3期61卷 363-364页

作者： duo Li Institute of Nutrition & Health Qingdao University

High carbohydrate （CHO） intake was associated with higher risk of total mortality, whereas high intake of total fat and individual types of fat were related to lower total mortal- ity. Total fat and types of fat were not associated with car- diovascular disease, myocardial infarction, or cardiovascu- lar disease mortality, whereas saturated fat had an inverse association with stroke. These results were based on data from food frequency questionnaires （FFQ） of 135,335 indi- viduals aged 35-70 years （enrolled between Jan 1, 2003, and March 31, 2013） in 18 countries with a median follow-up of 7.4 years （IQR 5.3-9.3）, currently published in The Lancet, 2017, doi： 10.1016/S0140-6736（17）32252-3.

关键词：脂肪 doi 死亡类型疾病