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DEStech Transactions on Materials Science and Engineering最新文献

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The Influence of Different Blade Outlet Angle and Wedge Groove on the Performance of the Double Suction Pump 不同叶片出口角和楔形槽对双吸泵性能的影响
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35550
Yuejin Yuan, Chenzhao Ma, Yingying Xu, Dong Wang, G. Ren, Qiankun Zhao
{"title":"The Influence of Different Blade Outlet Angle and Wedge Groove on the Performance of the Double Suction Pump","authors":"Yuejin Yuan, Chenzhao Ma, Yingying Xu, Dong Wang, G. Ren, Qiankun Zhao","doi":"10.12783/DTMSE/AMEME2020/35550","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35550","url":null,"abstract":"This study aims to significantly improve the performance of the centrifugal pump by designing a wedge grooves on the outside of the impeller cover, and investigating the method for determining the blade outlet angle that plays important roles in the energy conversion. The solidliquid two-phase flow fields with the designed pump and an original pump were numerically simulated in the ANSYS-FLUENT. Compared with the original pump, reducing the blade outlet angle can effectively improve the sand-water wear on the blade surface and opening wedge grooves can slow down impeller ring wear. The head of the improved model pump decreases by about 1.5% and the efficiency increases by about 1.5%.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77700008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis and Optimal Design of Antenna System's Forced Performance 天线系统强迫性能分析与优化设计
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35525
B. Tang, Jinwei Wang, Yihan Zhong, Qian Zhang, Jianguo Cai
{"title":"Analysis and Optimal Design of Antenna System's Forced Performance","authors":"B. Tang, Jinwei Wang, Yihan Zhong, Qian Zhang, Jianguo Cai","doi":"10.12783/DTMSE/AMEME2020/35525","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35525","url":null,"abstract":"The application of antenna system is becoming more and more widely. With the increasing demand for active phased array radar antenna, a kind of antenna array and antenna structure system for active phased array radar antenna is designed. According to the engineering requirements, the structural scheme is specifically designed, and the static analysis under static load and dynamic under random load are carried out by using finite element analysis software The mechanical analysis verifies the excellent mechanical properties of the structure scheme, the accuracy of engineering accuracy and the excellent ability to bear random load. This paper puts forward a kind of platform optimization scheme which applies prestress to antenna platform, and proves the rationality of the scheme through calculation.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"26 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91406244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Minimal Feedback Vertex Sets in Honeycomb Networks 蜂窝网络中的最小反馈顶点集
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35567
Xueli Su, Haizhen Ren
{"title":"Minimal Feedback Vertex Sets in Honeycomb Networks","authors":"Xueli Su, Haizhen Ren","doi":"10.12783/DTMSE/AMEME2020/35567","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35567","url":null,"abstract":"A vertex subset of a graph G is called a feedback vertex set if its removal results in an acyclic subgraph. The feedback vertex number ( ) G  is the cardinality of the minimum feedback vertex set of G , which is an important parameter of interconnection network topology. In this paper, we determine the feedback numbers of Honeycomb mesh n HM and Honeycomb torus n HT , i.e. 2 ( ) 9 / 2 15n/2 4 n HM n     and 2 / ( 2 ) 9 9 / 2 2 n HT n n     . Comparing these results with those of Zhou, we find that ( ) H  is related to the boundary of Honeycomb network H .","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"250 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91519811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on Integrated Management of Multi-Source Heterogeneous Disaster Data 多源异构灾害数据集成管理研究
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35528
Wanjiang Han, Xiaoxiang Wang, Shuwen Chen, Feifei Gong
{"title":"Research on Integrated Management of Multi-Source Heterogeneous Disaster Data","authors":"Wanjiang Han, Xiaoxiang Wang, Shuwen Chen, Feifei Gong","doi":"10.12783/DTMSE/AMEME2020/35528","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35528","url":null,"abstract":"An earthquake is a natural disaster with great destructive power and serious harm to humans. The collection of earthquake disaster information is a very complicated task, and it is even more difficult to mine valuable information from the massive, scattered and real-time changing disaster data. In response to the problems of slow and fragmented postearthquake disaster acquisition, large errors in disaster assessment, and inadequate decision support, this paper describes the design of open data interfaces to collect disaster data information from different sources and different structures in the shortest time, then implement integrated encoding to achieve dynamic management of disaster data throughout the life cycle. The experiment shows that the effect is good. This result provides a decision-making basis for rapid and effective emergency rescue of relevant departments.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75497605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Overview on the Main Technical Processes of Restriction-Site Associated DNA Sequencing (RAD-Seq) 限制性位点相关DNA测序(RAD-Seq)主要技术流程综述
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35548
Liao QingQing, Momo Li, Jiefei Qiu, Chen Fenfen, Chen Min, Qilin Wang, Guangyu Li, Guo Aiwei
{"title":"An Overview on the Main Technical Processes of Restriction-Site Associated DNA Sequencing (RAD-Seq)","authors":"Liao QingQing, Momo Li, Jiefei Qiu, Chen Fenfen, Chen Min, Qilin Wang, Guangyu Li, Guo Aiwei","doi":"10.12783/DTMSE/AMEME2020/35548","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35548","url":null,"abstract":"Restriction site-associated DNA sequencing (RAD-seq) is a critical enabling genotyping method based on whole-genome restriction sites developed on the basis of second-generation sequencing and nowadays is widely applicable to a variety of biological problems in many species where traditional cytogenetic methods have failed. As sequencing costs have dropped, RAD-Seq has moved from being primarily a SNP discovery tool to being a method for high-throughput genotyping of populations. In this paper, the main technical processes of RAD-seq has been briefly summarized and great potential will been hold to clarify more development and application in researches.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77645498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in Simulation Research for Thermal Runaway of Lithium-Ion Batteries 锂离子电池热失控仿真研究进展
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35554
Ma Xuezhi, Hongrun Zhu, Zhili Xie, Jiechang Zheng, Yuan Beizhe
{"title":"Advances in Simulation Research for Thermal Runaway of Lithium-Ion Batteries","authors":"Ma Xuezhi, Hongrun Zhu, Zhili Xie, Jiechang Zheng, Yuan Beizhe","doi":"10.12783/DTMSE/AMEME2020/35554","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35554","url":null,"abstract":"Safety issue is main obstacle for commercialization of high energy density lithium-ion battery. Thermal runaway is the most crucial problem in battery safety research. In order to solve safety problem, a lot of efforts have been made in the research of battery thermal runaway mechanism, thermal stability test, simulation and modeling. Herein, this article provides a review on chemical reaction of thermal runaway and the development of thermal simulation research on lithium battery. Thermal runaway are mainly divided into four types according to reaction mechanism, having different heat-generating behaviors. Researchers can reduce the cost and time of experiments through modelling of lithium-ion batteries, analyze the key factors of the thermal runaway during charge/discharge process, and improve the structural design and safety of the batteries. Finally, the review prospects the further development of nextgeneration lithiumion batteries.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79820719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Utilizing Electrospinning to Construct Dual-Layer Dual-Anisotropic Conductive Janus-Structural Film with Magnetism and Green Luminescence 利用静电纺丝制备双层双各向异性磁性和绿色发光导电双面结构薄膜
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35551
H. Qi, Yunrui Xie, Q. Ma, Li Dan, Wensheng Yu, Guixia Liu, Xiang-ting Dong
{"title":"Utilizing Electrospinning to Construct Dual-Layer Dual-Anisotropic Conductive Janus-Structural Film with Magnetism and Green Luminescence","authors":"H. Qi, Yunrui Xie, Q. Ma, Li Dan, Wensheng Yu, Guixia Liu, Xiang-ting Dong","doi":"10.12783/DTMSE/AMEME2020/35551","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35551","url":null,"abstract":"A dual-layer dual-anisotropic conductive Janus-structural film (DDCJF) with magnetism and green luminescence is fabricated by electrospinning. Two layers are tightly bonded together into DDCJF. The top layer is Janus-structural film with left and right structure using Janus nanobelt as building unit, and bottom layer is non-array film using nanofiber as building unit. In top layer, the nanobelts in the left and right regions are arranged vertically, which leads to mutually perpendicular of conducting directions, thus forming the dual-anisotropic conduction. DDCJF has adjustable magnetism, luminescence and dual-anisotropic conductivity. On the micro level, using Janus nanobelts as building units renders DDCJF excellent fluorescence properties and high degree of anisotropy. Macroscopically, the design of dual-layer structure can avoid the performance influence between top and bottom layers. The property of each layer of DDCJF is relatively independent due to the peculiar duallayer Janus structure, successfully realizing integration as well as isolation in the DDCJF.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85213549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on IFML Modeling Considering Session Data 考虑会话数据的IFML建模研究
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35569
B. Lou
{"title":"Research on IFML Modeling Considering Session Data","authors":"B. Lou","doi":"10.12783/DTMSE/AMEME2020/35569","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35569","url":null,"abstract":"The IFML standard does not include the concept of session data, which makes it sometimes difficult for the IFML model to accurately describe the source, destination, formation, and sharing of data for various elements of the web application front end. By extending the IFML metamodel, this paper introduces three new concepts and elements: Session Data, Using Session Data Flow and Providing Session Data Flow. The Using Session Data Flow points from the session data element to the interaction flow element, indicating that the interaction flow element uses the session data. The Providing Session Data Flow points from the interaction flow element to the session data element, indicating that the interaction flow element initializes or updates the Session data. Case studies show that the introduction of these three new elements in IFML model will make the representation of other interaction flow elements more intuitive, accurate and logical.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86014723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Study on Total Energy Production, GDP, Total Investment in Fixed Capital and Population in Shandong Province 山东省能源生产总量、GDP、固定资本投资总额和人口研究
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35573
Zhiwei Zhang, Bing Li
{"title":"A Study on Total Energy Production, GDP, Total Investment in Fixed Capital and Population in Shandong Province","authors":"Zhiwei Zhang, Bing Li","doi":"10.12783/DTMSE/AMEME2020/35573","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35573","url":null,"abstract":"This paper is to aim at analysing the responses of total energy production from the impulses of GDP, total investment in fixed assets and population in Shandong. The impulse response function analysis indicates that Shandong energy production will be greatly influenced by the GDP impulses in the short run and the influences from total investment in fixed capital assets is the smallest in the short run. The influence of total energy production by the population is rather medium compared with the GDP and investment in fixed capital assets. So we can see that GDP growth will greatly influence total energy production. It is necessary for administration to pay attention to the GDP growth as concerning the planning of total energy production.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78765098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of DLC Formation with Ion-Beam Assisted Magnetron Sputtering Deposition 离子束辅助磁控溅射沉积制备DLC的研究
DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI: 10.12783/DTMSE/AMEME2020/35536
Kai Huang, Haibo Guo, Yigang Chen
{"title":"Study of DLC Formation with Ion-Beam Assisted Magnetron Sputtering Deposition","authors":"Kai Huang, Haibo Guo, Yigang Chen","doi":"10.12783/DTMSE/AMEME2020/35536","DOIUrl":"https://doi.org/10.12783/DTMSE/AMEME2020/35536","url":null,"abstract":"TiC-containing DLC films are deposited by magnetron sputtering by means of ion beam deposition using acetylene as carbon source. The deposition rate of the films is three times as fast as that by ion beam deposition alone. The minimum roughness is 2.2 nm and the highest hardness is 11.97 GPa for the synthesized DLC films. The effects of ion beam voltage and deposition temperature on the composition, microstructures, and surface states are studied using infrared spectroscopy, XRD, Raman spectroscopy, and AFM. Mechanical properties of the DLC films from nanoindentation tests are analyzed with the variation of H and TiC, as well as content of sp bonds.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84701471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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