DEStech Transactions on Materials Science and Engineering最新文献

{"title":"Strategies for Creating National Brand and Boosting “The Belt and Road Initiatives”","authors":"Kai Chen, Rui Yang, Li Chen, Yu-fan Jiang, Yang Yang","doi":"10.12783/DTMSE/AMSEE2017/14311","DOIUrl":"https://doi.org/10.12783/DTMSE/AMSEE2017/14311","url":null,"abstract":"“ T he Belt and Road Initiatives ” strategy opens a new window to show the national image for China, providing an important platform for mainland enterprises to \"go out\", opening the door to the world for more domestic products. One big challenge of Chinese pro ducts “ going out ” is that the international market is no lack of products made in Chinese, but is lack of Chinese brands. Carry ing out national marketing, cultivating and creating national brand can enhance the image of the country and endow products with the strength of national brand and improve the brand competitiveness of Chinese products in international market. Therefore, this paper will propose national marketing strategies from the perspectives of external network marketing, external film marketing, external tourism marketing, external culture marketing and external cause marketing to build national brand of our country and better promoting “ the Belt and Road Initiatives ”.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91241142","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}

{"title":"Effect of PEG on the Morphology and NH3 Gas Sensing Properties of WO3 Nanostructures","authors":"Fengyun Sun, Dianzhong Wen","doi":"10.12783/DTMSE/AMSEE2017/14267","DOIUrl":"https://doi.org/10.12783/DTMSE/AMSEE2017/14267","url":null,"abstract":"WO3 nanostructures were obtained by hydrothermal method using sodium tungstate dihydrate (Na2WO4•2H2O), hydrochloric acid(HCl). Polyethylene glycol (PEG-1000) was added in the initial precursors. The phase of WO3 nanostructures are characterized by X-ray diffraction (XRD). The morphology of WO3 are characterized by scanning electron microscopy (SEM). The morphology of WO3 was nanorods, however became nanoparticles with PEG-1000 adding. The effect of PEG on the formation of WO3 nanoparticles was studied. The NH3 gas sensing properties of WO3 nanostructures were also studied. The result showed that the sensitivity was increased with PEG -1000 adding.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81407216","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}

{"title":"Calculation and Analysis on Noise Barrier Source Sound Field Monitoring of High-speed Railway","authors":"Jun Gao, Xiaoyan Lin, Chen Zhang","doi":"10.12783/dtmse/amsee2017/14289","DOIUrl":"https://doi.org/10.12783/dtmse/amsee2017/14289","url":null,"abstract":"","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87529487","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}

{"title":"Research on the Mechanism and Control Method of Azimuth Drift in Shale Gas Horizontal Wells","authors":"Jun Li, Hui Zhang, Shuo Wang, Kai Ren","doi":"10.12783/dtmse/amsee2017/14286","DOIUrl":"https://doi.org/10.12783/dtmse/amsee2017/14286","url":null,"abstract":"Horizontal well has the technical superiority to improve recovery rate of unconventional reservoirs, which is widely used in shale oil and gas exploration. However, serious azimuth drift problems occurred commonly in shale gas horizontal wells in Weiyuan, Sichuan, China, which seriously affected the control of well trajectory, and the reason is not clear. At first, we measured the drillability anisotropy and acoustic travel time of rock sampled from field, and set up a model to evaluate rock drillability anisotropy by logging data. Then, combing the model with the previous study on formation force model, for a certain field instance, we analyzed and summarized the main factors influencing azimuth drift are:1) formation drillability indexes 2) the angle between the drilling azimuth and formation down dip azimuth. The main method to control the drift is to optimize angle between the drilling azimuth and formation down dip azimuth. Our research initially came up with the method to evaluate orthotropic rock drillability anisotropy by logging data and the main method to control the azimuth drift, so it`s significant for shale drilling.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85660027","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}

{"title":"Traffic Tunnel Management in Cloud-based Flow Security System","authors":"Ga-Jin He, Yuzhu Chen","doi":"10.12783/dtmse/amsee2017/14291","DOIUrl":"https://doi.org/10.12783/dtmse/amsee2017/14291","url":null,"abstract":"Considering the increasingly serious problem of Internet security recently, Cloud-based Flow Security System(CFS) has been built as a solution to the Internet security application, providing convenient and effective application and content level security for enterprise users by means of cloud services. Under the CFS system, this paper developed custom function modules to achieve unified management of network nodes and GRE tunnel between the nodes, management of the switch data forwarding, and real-time monitoring of the state of the tunnel in the control platform, accomplished the design scheme of combining the load balancing algorithm with the unified management of the tunnel, realized the efficient allocation of the network nodes in the large-scale network environment and improved the network flexibility. Introduction With the development of cloud traffic, network security problem, especially information security problem, is becoming increasingly prominent, which has become one of the primary concerns for cloud application business users. More and more research institutions and network security companies focus on research and development on the security aspects of cloud services under such a circumstance. Cloud computing has a natural advantage in pooling information across the entire network and dealing with massive amounts of information. Chen [1] used the cloud computing feature to propose a collaborative management model for network security. Seeber proposed the idea of using SDN technology to enhance cloud security [2]. On the basis of these research, the rapid development of safety information and event management (SIEM) will lead to the dominance in service field. However, the security of the data transmission above the operating system, especially cloud-based applications, is still at the users’ own risk. After addressing the infrastructure security issues, at the application level, whether it is application management or content security, users are also faced with similar problems with fragmentation of previous solutions, and even no mature solution. Under the condition that the weak link in the current cloud service security solution, the paper aims at building a framework to improve, ameliorate the Internet security application environment, providing a convenient, effective application and content level security guarantee for enterprise users by means of cloud services. In the second chapter, the overall framework of the Cloud-based Flow Security System (CFS) was described in detail. This work focuses on the implementation of traffic into the security cloud platform. Under the SDN [3,4,5] architecture, the centralized management for the GRE tunnel [6,7] between the management platform and the user side probe was accomplished, including the establishment of tunnels, demolition and condition monitoring. In addition, with the expansion of the network size and the increase of network nodes, the time of packet transmission will be greatly","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90287851","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}

{"title":"The Mechanical Properties of an Aluminium Composite with Different Carbon Fibre Content","authors":"Xiao-Fang Liu, Ping Li, Zhong-xia Liu","doi":"10.12783/DTMSE/AMSEE2017/14251","DOIUrl":"https://doi.org/10.12783/DTMSE/AMSEE2017/14251","url":null,"abstract":"Short modified carbon fibres (Cf) were applied to reinforce a 2024 aluminium alloy to investigate the effect of Cf content on the mechanical properties of an aluminium matrix composite. As Cf volume fraction increased, the composite had more pores and defects while Cf were distributed uniformly throughout and combined well with the matrix. Hot extrusion reduced pore and defect frequency, and made Cf aligned in the extruded direction. These factors, such as Cf volume fraction, distribution, interface combination with the matrix, pores and defects mainly induced by Cf adding, had a great influence on the mechanical properties of such aluminium matrix composites. In comparison with the matrix material, the elastic properties of the prepared composite were improved while its plasticity decreased. The results show that Cf surface modification, component control, and optimum heat treatment should be investigated further to improve the property of short Cf reinforced aluminium alloy composites.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90543683","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}

{"title":"Investigation of Antibacterial Activity and Stability of the Polyphenol Crude Extract from Spinacia Oleracea","authors":"F. Sun, Yaru Yan, Feng-juan Wang, Wei Tang","doi":"10.12783/DTMSE/AMSEE2017/14281","DOIUrl":"https://doi.org/10.12783/DTMSE/AMSEE2017/14281","url":null,"abstract":"Plant polyphenols have drawn increasing scientific attention due to their multiple functions on health care. In this paper, the antibacterial properties and stability of the polyphenol crude extract from Spinacia oleracea were studied. The oxford cup method and the spread plate method were employed for the observation of antibacterial activity of spinach polyphenol against common pathogens. Results showed that the antibacterial activity of spinach polyphenol against Gram-negative bacteria was stronger than that of Gram-positive bacteria. In addition, the effects of pH value, temperature and NaCl concentration on the antibacterial stability of spinach polyphenol were also discussed. This study has a certain reference value for better research and utilization of plant polyphenols.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"35 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91495424","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}

{"title":"Comparison of the Impact on the Extubation Between Desflurane and Sevoflurane in Obese Patients Undergoing Thyroidectomy","authors":"Chunlu Zhang, Delong Zeng, Lu Chen, Wei-kang Wang, Peng Chen","doi":"10.12783/dtmse/amsee2017/14299","DOIUrl":"https://doi.org/10.12783/dtmse/amsee2017/14299","url":null,"abstract":"Objective: Comparison of the impact on the extubation between desflurane and sevoflurane in obese patients undergoing thyroidectomy. Method: A total number of 60 obesity cases aging between 32~60 were selected, randomly divided into 2 groups, named Desflurane Group (30 cases) and SevofluraneGroup(30cases). Patients were required for anesthesia detection. Penehyclidine 0.5mg. Induction of anesthesia was 1ED95 rocuronium bromide 0.3 mg/kg, midazolam 2mg, propofol 2 mg/kg and sufentanil 0.5 μg/kg.The drugs facilitate tracheal intubation with nerve monitoring function and mechanical ventilation, tidal volume 8~10ml/kg, respiratory rate12/min. Maintained the anesthesia with 1.2~1.4 MAC of desflurane or sevoflurane. Stopping medication after surgery. We recorded the OAA/S scores at 5min, 10min, 20min and 30min later after extubation and Riker agitation sedation scores. SPSS 20.0 software was used to analysis results. Results: Compared with sevoflurane, desflurane has a certain clinical application advantages applying in obese patients with nerve monitoring complexity thyroidectomy, showing short recovery and extubation time obviously. But desflurane showed a higher incidence of postoperative agitation than sevoflurane.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81872452","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}

{"title":"Microstructure and Mechanical Property of 14Cr-ODS Ferritic Alloy Produced by Spark Plasma Sintering","authors":"Zhengyuan Li, Lu Zheng, Chunmimg Liu","doi":"10.12783/DTMSE/AMSEE2017/14269","DOIUrl":"https://doi.org/10.12783/DTMSE/AMSEE2017/14269","url":null,"abstract":"Oxide dispersion strengthened (ODS) ferritic alloys are the leading candidate materials for the advanced fission and fusion reactor due to their excellent radiation tolerance and mechanical properties. These promising performances rely strongly on the high density of nanoscale oxides in ODS alloys. A 14Cr-ODS alloy of Fe-14Cr-2W-0.3Ti-0.3Y2O3 was processed using a combined processing route of mechanical alloy (MA) and spark plasma sintering (SPS). The microstructures of 14Cr-ODS alloy were characterized by using electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM). The results showed that ultrafine grains and high-density nanoscale Y-Ti-O oxides are formed in the 14Cr-ODS alloy. The room temperature tensile strength of 14Cr-ODS alloy is up to 1493 MPa.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77496298","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}

{"title":"Mechanical Enhancement Effect of Carbonnano-fiber to Conductive Polymer","authors":"Shuaidi Zhang, Yitong Xu","doi":"10.12783/dtmse/amsee2017/14257","DOIUrl":"https://doi.org/10.12783/dtmse/amsee2017/14257","url":null,"abstract":"Carbonnano-fiber (CNF) is widely used in composite materials to enhance the mechanical properties. Conductive polymer applied as actuator or sensor are needed to be improved in mechanical characteristics. In this work, several samples of conductive polymer with different percentage of CNFs were tested on an instron universal test machine Instron UTM 3343. Results show that CNFs improve the mechanical characteristics a lot, especially for the modulus, increased from 21.246Mpa to 42.155Mpa.","PeriodicalId":11124,"journal":{"name":"DEStech Transactions on Materials Science and Engineering","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73246898","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}