检索结果-南通市图书馆

维普期刊数据库

An Etymological Note on the Term Tubo Gaoshen

在线全文

学校读者我要写书评

暂无评论

Frontiers of History in China 2020年第2期15卷 174-197页

作者： wang qilong School of International Studies Shaanxi Normal UniversityXi'an 710062China

Most previous studies have held that the system of Tubo gaoshen(an honorary identity mark)was an imitation of a similar system in the Tang dynasty,referring to the latter's official costume decorations for its stratified *** studies have not given due attention to the characteristics of the title *** the perspective of the change of the Tibetan name and based on existing research results and historical records in both Tibetan and Chinese,this article tries to offer a new understanding and preliminary discussion on the development of Tubo gaoshen and several related *** find that there are two paths in the evolution of its name:One is from Sugto Yi Ge or Yig,the other is from Yig tsang to Yig *** former is used to denote a concrete gaoshen and can be added as a prefix while the latter denotes the abstract idea of gaoshen and no attribute can be used before *** the two are used together,the latter is used before the former,such as in:yig tshangs pa ni zangs kyi yi ge gtong/(As to the gaoshen[yig tshangs],[he]is awarded a bronze yi ge).

关键词： Tubo gaoshen(an honorary identity mark) origin of the name etymological study

A General and Highly Selective Method for the Asymmetric Synthesis of Trifluoromethyl-Substituted α- and β-Aminophosphonates

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 Journal of Chemistry 2013年第7期31卷 892-900页

作者： Lijing wang qilong Shen Long Lu Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

A highly selective method for the asymmetric formation of trifluoromethyl-substituted α- and β-aminophos- phonates was described. The reaction proceeded with high yields and good to excellent diastereoselectivity. T... 详细信息

关键词： trifluoromethyl aminophosphonate asymmetric fluorine

Introduction to the Special Issue on Computer Modelling of Transmission, Spread, Control and Diagnosis of COVID-19

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2021年第5期127卷 385-387页

作者： Yudong Zhang qilong wang Sean H.Y.Yuan School of Informatics University of LeicesterLeicesterLE17RHUK The Affiliated Huai’an No.1 People’s Hospital Nanjing Medical UniversityHuai’an223300China Department of Biomedical Sciences City University of Hong KongHong KongChina

The 2019–20 coronavirus pandemic is an ongoing pandemic of coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).It was declared to be a Public Health Emergency of International Concern and recognized as a pandemic by the World Health *** outbreak of COVID-19 has rapidly spread to most countries in the *** special issue started at 21 April 2020,when there were more than 2.5 million confirmed cases and 174,336 deaths around the *** 10 months,this special issue closes at 23 February 2021,the two figures increase to 112.2 million confirmed cases and 2.48 million death tolls,respectively.

关键词： acute respiratory death

Stroke optimization of a novel multi-station rotary polishing robot based on workspace analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Technology Letters 2018年第3期24卷 313-321页

作者：李东京 Wei wang wang qilong Hao Daxian Jin Hui School of Information and Electrical Engineering Hubei University of Science and Technology School of Mechanical Engineering and Automation Beihang University College of Mechanical Engineering Chongqing University of Technology

In order to meet the polishing requirement of faucets and other products,a novel multi-station rotary polishing robot is designed,which is a PPPR + RR type of degree of freedom( DOF) distribution structure,and is similar to dual-arm robot. Forward and inverse kinematic analysis is carried out by robot modeling. In order to make this robot structure more compact,first of all,X,Y and Z three moving degrees of freedom( DOF) limit stroke polishing need is calculated by using an artificial fish swarm algorithm,which analyzes dexterous workspace of this robot. Then,on the basis of the above analysis,the three DOF stroke is optimized. Simulation and polishing experimental results verify that this polishing robot with optimized stroke parameters can meet the polishing needs of faucets and other bathroom pieces.

关键词： multi-station rotary table polishing robot dexterous workspace analysis stroke optimization dual-arm robot artificial fish swarm algorithm (AFSA)

维普期刊数据库

Hydrochloric Acid-Promoted Synthesis of cBN via Hydrothermal Route

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2007年第6期23卷 768-770页

作者： Haihui JIANG Kai LI Ligang GAI qilong wang Deliang CUI Minhua JIANG State Key Lab of Crystal Materials Shandong University Jinan 250100 China School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China School of Chemical Engineering Shandong Institute of Light Industry Jinan 250353 China

Single phase crystalline cubic boron nitride （cBN） with high yield was prepared by hydrothermal route at low temperature, using hydrochloric acid （HCI） as the promoter. The promotion effect of HCI on the synthesis... 详细信息

关键词： Hydrochloric acid-promoted Cubic boron nitride Hydrothermal route

维普期刊数据库

KEYHOLE IMAGE PROCESSING OF VARIABLE POLARITY PLASMA ARC WELDING BASED ON WAVELET TRANSFORM

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2001年第1期14卷 62-66+73页

作者： Liu Zhonghua wang qilong Zhu Jiaqi Welding Department, Harbin Institute of Technology 哈尔滨工业大学黑龙江哈尔滨

In order to realize the feedback control for variable polarity plasma arc welding (VPPAW) formation in the welding process, the geometrical sizes of the keyhole image must be extracted. With the properties of multiscale edge through the wavelet theory, the edge points were detected by getting the maximum modules of the gradient vector in the dircetion towards which the gradient vector points in the image plane. At coarse scales, the local maxima of modules have different positions and only detected the sharp edge. At fine scale, there are many maxima created by the image noise. The best scale where the edges are well discriminated from noises is discussed by the multiscale transform. At last, a new method of peak analysis for threshold selection is provided. It is based on the wavelet transform which provides a multiscale analysis of the information of the histogram. Many experiments show these ways are effective for the keyhole image to get the geometry parameters of the keyhole in the real time VPPAW image processing.

关键词： PAW Variable polarity Keyhole Image

Porous-hollow nanorods constructed from alternate intercalation of carbon and MoS2 monolayers for lithium and sodium storage

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2019年第8期12卷 1912-1920页

作者： Laiying Jing Gang Lian Junru wang Mingwen Zhao Xizheng Liu qilong wang Deliang Cui Ching-Ping Wong State Key Lab of Crystal Materials Shandong UniversityJinan 250100China School of Physics Shandong UniversityJinan 250100China Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials and Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Key Laboratory for Special Functional Aggregated Materials of Education Ministry School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100China School of Materials Science and Engineering Georgia Institute of Technology AtlantaGeorgia 30332USA

Weak ion diffusion and electron transport due to limited interlayer spacing and poor electrical conductivity have been identified as critical roadbacks for fast and abundant energy storage of both MoS2-based lithium ion batteries (LIBs) and sodium ion batteries (SIBs). In this work, MoS2 porous-hollow nanorods (MoS2/m-C800) have been designed and synthesized via an annealing-followed chemistry-intercalated strategy to solve the two issues. They are uniformly assembled from ultrathin MoS2 nanosheets, deviated to the rod-axis direction, with expanded interlayer spacing due to alternate intercalation of N-doped carbon monolayers between the adjacent MoS2 monolayers. Electrochemical studies of the MoS2/m-C800 sample, as an anode of LIBs, demonstrate that the superstructure can deliver a reversible discharge capacity of 1,170 mAh·g^-1 after 100 cycles at 0.2 A·g^-1 and maintain a reversible capacity of 951 mAh·g^-1 at 1.25 A·g^-1 after 350 cycles. While for SIBs, the superstructure also delivers a reversible discharge capacity of 350 mAh·g^-1 at 0.5 A-g-1 after 500 cycles and exhibits superior rate capacity of 238 mAh·g^-1 at 15 A·g^-1 .The excellent electrochemical performance is closely related with the hierarchical superstructures, including expanded interlayer spacing, alternate intercalation of carbon monolayers and mesoporous feature, which effectively reduce ion diffusion barrier, shorten ion diffusion paths and improve electrical conductivity.

关键词： lithium/sodium ion batteries porous-hollow nanorods expanded interlayer spacing alternate intercalation ultrathin nanosheets

Water-soluble boron carbon oxynitride dots with excellent solid-state fluorescence and ultralong room-temperature phosphorescence

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2020年第12期13卷 3261-3267页

作者： Shenghui Han Gang Lian Xiaoliang Zeng Zhaozhen Cao qilong wang Deliang Cui Ching-Ping Wong State Key Lab of Crystal Materials Shandong UniversityJinan250100China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen518055China Key Laboratory for Special Functional Aggregated Materials of Education Ministry School of Chemistry&Chemical EngineeringShandong UniversityJinan250100China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGeorgia30332USA

Developing metal-free and long lifetime room-temperature phosphorescence(RTP)materials has received tremendous interest due to their numerous potential applications,of which stable triplet-excited state is the core ***,boron carbon oxynitride(BCNO)dots,emitting stable blue fluorescence and green RTP,are reported for the first *** obtained BCNO dots exhibit an unexpected ultralong RTP lifetime of 1.57 s,lasting over 8 s to naked *** effective doping of carbon and oxygen elements in boron nitride(BN)actually provides a small energy gap between singlet and triplet states,facilitating the intersystem crossing(ISC)and populating of triplet *** formation of compact cores via crystallization and effective inter-/intra-dot hydrogen bonds further stabilizes the excited triplet states and reduces quenching of RTP by oxygen at room *** on the water-soluble feature of BCNO dots,a novel advanced security ink is developed toward anti-counterfeiting tag and confidential information *** study extends BCNO dots to rarely exploited phosphorescence fields and also provides a facile strategy to prepare ultralong lifetime metal-free RTP materials.

关键词： boron carbon oxynitride dots room-temperature phosphorescence fluorescence colourless security ink anti-counterfeiting

MoS2-intercalated carbon hetero-layers bonded on graphene as electrode materials for enhanced sodium/potassium ion storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2023年第1期16卷 473-480页

作者： Laiying Jing Junwei Sun Chaoyang Sun Di Wu Gang Lian Deliang Cui qilong wang Haohai Yu State Key Lab of Crystal Materials Shandong UniversityJinan 250100China School of Materials Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Key Laboratory for Special Functional Aggregated Materials of Education Ministry School of Chemistry&Chemical EngineeringShandong UniversityJinan 250100China

MoS2 is considered as an ideal electrode material in the field of energy storage due to high theoretical specific capacity and unique layered ***,limited interlayer distance and poor intrinsic electrical conductivity restrict its potential realworld ***,an alternately intercalated structure of MoS2 monolayer and N-doped porous carbon(NC)layer is grown on reduced graphene oxide(rGO)via a chemical intercalated *** expanded interlayer distance of MoS2(0.96 nm),enlarged by the intercalation of N-doped porous carbon layers,can enhance ion diffusion mobility,provide additional reactive sites for ion storage and maintain the stability of electrode *** addition,the hierarchical structures between rGO substrate and intercalated N-doped carbon layers construct a three-dimensional(3D)conductive network,which can significantly improve the electrical conductivity and the structural *** a result,the rGO-supported MoS2/NC electrode exhibits an ultrahigh reversible capacity and remarkable long cycling stability for sodium-ion batteries(SIBs)and potassium-ion(PIBs).Meanwhile,the as-obtained MoS2/NC@rGO electrode also delivers a superior cycle performance of 250 mAh·g−1 after 160 cycles at 0.5 A·g−1 when employed as an anode for sodium-ion full cells.

关键词： MoS2 graphene expanded interlayer spacing sodium-ion batteries potassium-ion batteries