检索结果-内蒙古大学图书馆

Comparison of the Morphology,Structures and Mechanical Properties of Teleost Fish Scales Collected from New Zealand

Journal of Bionic Engineering 2019年第2期16卷 328-336页

作者： Deju Zhu Chaohui Zhang Peng Liu Laith A.Jawad Key Laboratory for Green&Advanced Civil Engineering Materials and Application Technology of Hunan Province College of Civil EngineeringHunan UniversityChangsha 410082China International Science Innovation Collaboration Base for Green&Advanced Civil Engineering Materials of Hunan Province Hunan UniversityChangsha 410082China College of Mechanical and Vehicle Engineering Hunan UniversityChangsha 410082China Flat Bush ManukauAuckland 2016New Zealand

The mechanical properties and structures of fish scales have generated considerable research interest,however,comparative studies for different fish scales from difl^rent water regions have not been *** this paper,the surface morphologies,hierarchical structures and mechanical properties of four kinds of fish scales collected from freshwater,shallow sea,and deep sea in New Zealand are *** results indicate that the surface morphologies of those fish scales are similar at ventro-lateral,dorso-lateral and anterior locations,and the hierarchical structures of those fish scales all consist of two layers:a bone layer and a collagen layer composed of collagen ***,the spiral angles of the collagen lamellaes of different scales are *** largest are Mugil cephalus scales,while the smallest are Cyprinus carpio *** the mechanical behaviors of those fish scales,the tensile strength of Carassius auratus scales is the largest,but the ductility is the *** sieboldii scales have the best ***,the relationship between hierarchical structures and mechanical properties of fish scales is *** is found that the spiral angles of the collagen lamellaes and bond/collagen thickness ratio both have a great influence on the mechanical properties of fish scales.

关键词： morphology hierarchical structure mechanical property fish scale water region

来源：评论

学校读者我要写书评

暂无评论

Analysis on Load Characteristics of Distributed Photovoltaic Access to EVs industry

Analysis on Load Characteristics of Distributed Photovoltaic...

引用

2019 IEEE Sustainable Power and Energy Conference, iSPEC 2019

作者： Liu, Mouhai Zou, Wei Yang, Maotao Huang, Rui Wei, Shumin Yu, Minqi State Grid Hunan Electric Power Company Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha410000 China

ISBN: (纸本)9781728149301

The load-characteristic charging of EVs and the power of distributed PVs have lately received great attention for car and electric industry due to their energy conservation and environmental friendliness. However, the disordered charging of EVs together with the distributed photovoltaic has made it challenging to meet the energy efficiency and electric quality. In an effort to overcome this challenge, the Monte Carlo method is adopted to calculate the charging load of EVs both in ordered and disordered way and the mathematical model of photovoltaic cell power is established. The reasonable dispatching in EVs and PVs is detailed demonstrated using MATLAB language, with certain day load in the area under the different circumstances. The proposed load characteristic method opens the door to research in the field of EVs and PVs, greatly enhancing the energy-using efficiency and the electric quality. © 2019 IEEE.

关键词： Monte Carlo methods

来源：评论

学校读者我要写书评

暂无评论

Design Verification and Test Techniques for UHF RFID Tag IC

Design Verification and Test Techniques for UHF RFID Tag IC

引用

2019 IEEE Sustainable Power and Energy Conference, iSPEC 2019

作者： Yang, Maotao Wei, Shumin Liu, Mouhai Huang, Rui Yu, Minqi Chen, Fusheng Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology State Grid Hunan Electric Power Company Changsha410000 China

ISBN: (纸本)9781728149301

Radio Frequency Identification (RFID) technology has been rapidly developed in recent years. Electronic tag constitutes an important part of RFID system. This paper presents the design verification and test techniques suitable for UHF (Ultra High Frequency) RFID passive tag, which can meet the designers' demand for verification and test. Then, the IC baseband circuit test platform based on field programmable gate array is proposed. The platform can be used to verify the function of baseband circuit at design stage. It can also help designers with HDL (Hardware Description Language) code commissioning, so as to improve the reliability of circuit design, which can greatly improve the success rate of tape-out in practical applications. With regard to IC RF parameter test, this paper comes up with a low-cost test technical solution based on the commercially available card reader and the adjustable attenuator, which can be used to accurately measure the RF parameters such as IC sensitivity and input impedance without special RFID equipment, so as to guide the design of antenna and RFID. Based on the above-mentioned test scheme, the UHF RFID Tag IC that has been developed and taped out is tested in this paper. © 2019 IEEE.

关键词： Timing circuits

来源：评论

学校读者我要写书评

暂无评论

SBA-15 Modified Carbon Paste Electrode for Rapid cTnI Detection with Enhanced Sensitivity

引用

Chinese Chemical Letters 2006年第2期17卷 235-238页

作者： Nong Yue HE Hui Shi GUO Di YANG Chun Rong GU Ji Nan ZHANG State Key Laboratory of Bioelectronics Southeast University Nanjing 210096 Institute of Cardiovascular Disease First Affiliated Hospital of Nanjing Medical University Nanjing 210029 Key Laboratory of Green-Packaging and Application of Bionanotechnology of Hunan Province Zhuzhou Institute of Technology Zhuzhou 412008

A novel electrochemical immunoassay for cardiac troponin Ⅰ （cTnI） combining the concepts of the dual monoclonal antibody ＂sandwich＂ principle, the silver enhancement on the nano-gold particle, and the SBA-15 mesoporous modified carbon paste electrode （SBA-MCPE） is described. Four main steps were carried out to obtain the analytical signal, i.e., electrode preparation, immunoreaction, silver enhancement, and anodic stripping voltammetric detection. A linear relationship between the anodic stripping peak current and concentration of cTnI from 0.5 to 5.0 ng/mL and a limit of detection of 0.2 ng/mL of cTnI were obtained.

关键词： Cardiac troponin Ⅰ SBA-15 mesoporous materials carbon paste electrode rapid quantitative immunoassay anodic stripping voltammetric detection nano-gold sensitivity.

来源：评论

学校读者我要写书评

暂无评论

Multiple genotyping based on multiplex PCR and microarray

引用

Chinese Chemical Letters 2016年第11期27卷 1661-1665页

作者： Xian-Bo Mou Zeeshan Ali Bo Li Tao-Tao Li Huan Yi Hong-Ming Dong Nong-Yue He Yan Deng Xin Zeng State Key Laboratory of Bioelectronics Southeast University Nanjing 210096 China Economical Forest Cultivation and Utilization of 2011 Collaborative Innovation Center in Hunan Province Hunan Key Laboratory of Green Packaging and Application of Biological Nanotechnology Hunan University of Technology Zhuzhou 412007 China Nanjing Maternity and Child Health Care Hospital Nanjing 210029 China

The genetic variability has obtained more and more attention in the process of diagnosis and treatment of tumors. Herein, we have described a multiple genotyping method based on magnetic enrichment- multiplex PCR （MEM-PCR） and microarray technology. Monodisperse magnetic beads were fabricated and modified with streptavidin. Four loci on two genes （M235T and A-6G loci on AGT gene, A1298C and C677T loci on MTHFR gene） were selected to study single nucleotide polymorphisms （SNP）. Target sequences of these SNP loci were amplified using Cy3-1abeled primers through multiplex PCR in one tube after the templates were enriched and purified by functional magnetic beads （MB）. Four pairs of NH2- labeled probes, corresponding to each locus, were fixed on CHO-modified glass slide by covalent binding. Hybridization between target sequences and probes was performed under suitable conditions. The spotting locations on microarray and the ratio of fluorescence intensity, produced by different loci, were used to distinguish the SNP genotypes. Finally, three of gastric cancer samples were collected and genotvping analysis for these four SNP loci was carried out successfully simultaneously by this method.

关键词： Magnetic beads Multiplex PCR Microarray Multiple genotyping Gastric cancer

来源：评论

学校读者我要写书评

暂无评论

Sulfur-promoted,one-pot,and metal-free conversion of aromatic aldehydes to nitriles using an inorganic ammonium salt as the nitrogen source

引用

Green Synthesis and Catalysis 2023年第1期4卷 46-53页

作者： Jiawen Yin Xia Meng Changqun Cai Lingyun Wang Hang Gong The Key Laboratory for Green Organic Synthesis and Application of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of EducationCollege of ChemistryXiangtan UniversityXiangtan 411105China School of Material and Chemical Engineering Hunan Institute of TechnologyHengyang 421002China

A simple protocol for the sulfur-promoted conversion of aromatic aldehydes to aromatic nitriles has been *** strategy enables the one-pot conversion of inexpensive and readily available aromatic aldehydes into highly valuable aromatic nitriles using a cheap inorganic ammonium salt as the nitrogen source in the absence of ***,a broad scope of substrates was explored using this strategy,and various groups,including alkyl,alkoxyl,alkylthiol,hydroxyl,amino,aryl,alkenyl,cyano,carboxyl,and borate ester groups were tolerated,and good to excellent yields were achieved in most ***,polycyclic aromatic aldehydes and heteroaromatic aldehydes also could be converted to the corre-sponding nitriles with satisfactory *** method can be utilized as a powerful tool for the cyanation of complex molecules.

关键词： Synthetic methodology Transition-metal free Nitriles Aldehydes One-step reaction

来源：评论

学校读者我要写书评

暂无评论

Research on Comprehensive Performance Evaluation Method for On-site Operation of Electricity Information Acquisition Terminal 2

Research on Comprehensive Performance Evaluation Method for ...

引用

2nd International Conference on Laser, Optics and Optoelectronic technology, LOPET 2022

作者： Deng, Hanjun Guo, Guang Liu, Hongying Zeng, Taoming Peng, Pei Yin, Xiaobo Liu, Mouhai State Grid Hunan Electric Power Co. Ltd Hunan Province Changsha410000 China DHunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Hunan Province Changsha410000 China

ISBN: (纸本)9781510657588

Aiming at the problem of insufficient operation time and deviation of the equipment’s factory evaluation index, the comprehensive performance of the on-site operation of the electricity information acquisition terminal is evaluated and designed in this paper. The performance analysis of the acquisition equipment is completed through the combined device of the nuclear capacity device evaluation structure, and the cluttered information of the acquisition platform is integrated. Use the BF5R feedback line to transfer to the actual power station, responsible for the distribution of the transfer data and the feedback of the information. The DC decoupling improved algorithm is used to realize the billing system of equipment acquisition electric energy, which is used as an important index of the evaluation system. Through the IES VE software to simulate the performance evaluation process of the equipment, the experiment shows that the maximum collected power of the designed test equipment is 6351.6kWh, the effective operation time is 18.2h, and the accuracy of the evaluation index is 98.5%, which proves the feasibility of the design. © 2022 SPIE.

关键词： Software testing

来源：评论

学校读者我要写书评

暂无评论

Synthesis of benzisothiazoles by a three-component reaction using elemental sulfur and ammonium as heteroatom components under transition metal-free conditions

引用

Green Synthesis and Catalysis 2022年第2期3卷 168-174页

作者： Min Wang Xia Meng Changqun Cai Lingyun Wang Hang Gong The Key Laboratory for Green Organic Synthesis and Application of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of EducationCollege of ChemistryXiangtan UniversityXiangtan 411105China School of Material and Chemical Engineering Hunan Institute of TechnologyHengyang 421002China

A strategy for the synthesis of benzisothiazoles by a three-component reaction was developed using elemental sulfur and ammonium as heteroatom components under transition metal-free *** reaction is preferably based on pyridine or quinoline ring substrate,and good to excellent yields can be ***,this reaction has been applied to the gram-scale synthesis of bioactive molecules.

关键词： Synthetic methodology Three-component reaction Transition-metal free Sulfur Benzisothiazole

来源：评论

学校读者我要写书评

暂无评论

Data-driven risk assessment and early warning of learning situations 4

Data-driven risk assessment and early warning of learning si...

引用

4th International Conference on Computer Science and Educational Informatization, CSEI 2022

作者： Mi, Chunqiao Deng, Qingyou Zhao, Changhua Huaihua University Hunan Huaihua China Key Laboratory of Intelligent Control Technology for Wuling-Mountain Ecological Agriculture in Hunan Province Hunan Huaihua China Key Laboratory of Wuling-Mountain Health Big Data Intelligent Processing and Application in Hunan Province Universities Hunan Huaihua China

ISBN: (数字)9781839537882

ISBN: (纸本)9781839537882

At present, quality governance has become the internal demand of education reform and high-quality education system construction. First, this study analyzed the current research status and existing problems of early warning education in universities and colleges from the aspects of basic data, evaluation index, assessment method, and tool system application. Second, driven by learning situation big data analysis, this study puts forward a complete method system of risk assessment and early warning of learning situations, which consists of basic data collection and processing, index system construction and quantification, model construction and calculation, result expression and visualization, and a prototype information system was also realized by using modern software engineering and visualization technology. Finally, a specific course was taken as an example, and the application practice of learning situation risk assessment and early warning was carried out. The obtained results are very helpful to solve the problems of lagging early warning time, single evaluation factor, outdated technology and so on in traditional early warning education. It has reference significance for improving students' learning quality, teachers' teaching effect and early warning education management efficiency. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Risk assessment

来源：评论

学校读者我要写书评

暂无评论

Review on helium behaviors in nanochannel tungsten film

引用

Tungsten 2021年第4期3卷 369-381页

作者： Wen-Jing Qin Wei Guo Tao Cheng Jun Tang Chang-Zhong Jiang Feng Ren Key Laboratory for Matter Microstructure and Function of Hunan Province Synergetic Innovation Center for Quantum Effects and ApplicationSchool of Physics and ElectronicsHunan Normal UniversityChangsha 410081China Center for Ion Beam Application and Center for Electron Microscopy School of Physics and TechnologyWuhan UniversityWuhan 430072China

Tungsten(W)as plasma facing material(PFM)needs to face an unprecedented harsh environment in the fusion reactor,which puts forward high requirements for its radiation *** the many challenges,the rapid accumulation of helium(He)atoms to form numerous bubbles or even“fuzzy”nanostructure leads to swelling and embrittlement of W matrix and seriously shorten its service life,which is one of the most serious problems faced by PFM-W at *** this review,we summarize the recent works on the nanochannel W films with high surface-to-volume ratio deposited by magnetron sputter-ing,and the behaviors of He in the nanochannel W films at different fusion-related irradiation *** and simulation results showed that the nanochannel W films have better radiation tolerance performance in managing He behaviors than that of commercial bulk W.

关键词： Tungsten Nanochannel structure He behaviors Radiation tolerance Simulation

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：