检索结果-内蒙古大学图书馆

SSrN 2023年

作者： dang, Ning Lian, Youyun Song, Jiupeng dai, Shaowei Yan, Binyou Fan, Feng Wang, Jianbao Liu, Xiang School of Materials Science and Engineering Xihua University Sichuan Chengdu610039 China Southwestern Institute of Physics Sichuan Chengdu610064 China Xiamen Tungsten Co. Ltd. Fujian Xiamen361009 China China National R&D Centre for Tungsten Technology Fujian Xiamen361009 China

The intrinsic brittleness of tungsten (W) significantly restricts its application as the primary material for plasma-facing components. In this study, we propose a novel approach to enhance both the strength and ductility of W-based alloys by leveraging the synergistic effects between potassium (K) bubbles and high-energy-rate forging. K doping was introduced into W, followed by a two-step high-energy-rate forging (HErF) process. This results in a higher density and smaller size of K bubbles along the grain boundaries, as well as laminated matrix grains with refined sizes and deformation textures, and an increased density of low-angle grain boundaries. Consequently, the prepared W alloys exhibit a substantially reduced ductile-to-brittle transition temperature within the range of room temperature to 50 °C, along with a notable ultimate tensile strength of up to 1393 MPa. Impressively, these alloys also demonstrate remarkable elongation at 200 °C, reaching a value as high as 33.12%. The outstanding strength and extraordinary ductility observed in these alloys underscore their potential for commercialization in the field of nuclear fusion engineering. © 2023, The Authors. All rights reserved.

关键词： Textures

来源：评论

学校读者我要写书评

暂无评论

A Multi-Layer Encryption and Anomaly detection Framework for Securing SCTP data Transmission

A Multi-Layer Encryption and Anomaly Detection Framework for...

引用

Computing and Intelligent reality Technologies (ICCIrT), International Conference on

作者： P. Venkadesh S.V. divya Geetha Ponnaian T.Saju raj S.Ninisha Nels K.Subash Kumar Department of AI&DS V.S.B College of Engineering Technical Campus Coimbatore Department of CSE V.S.B College of Engineering Technical Campus Coimbatore Department of CSE Saveetha University Chennai Department of CSE Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology Chennai Department of CSE Noorul Islam Centre for Higher Education Kumaracoil

ISBN: (数字)9798331510299

ISBN: (纸本)9798331510305

Stream Control Transmission Protocol (SCTP)is an efficient protocol that can replace TCP/UdP in *** it is initially used in IP networks, it performs better in multitasking and multi-homing environments because of its incredible *** to this, SCTP gains attention by the researchers for utilizing it in data communication similar to TCP/***, its popularity is hindered due to several security issues like doS attack, chunk bundling, lack of confidentiality, man-in -the middle attack *** a secure and reliable data communication using SCTP is essential. The research focuses on proposing a steganographic algorithm to analyze and verify the hidden areas in SCTP, aiming to detect unauthorized access. The proposed method enhances the integrity and security of SCTP for data transmission compared to existing methods and achieves a reasonable throughput and delay.

关键词： Steganography Protocols Throughput Multitasking Encryption delays data communication Security reliability IP networks

来源：评论

学校读者我要写书评

暂无评论

Microstructure Evolution and Properties of Hot rolling K-doped Tungsten Sheets

SSRN

引用

SSrN 2023年

作者： Liang, Mengxia dai, Shaowei ren, Ping Song, Jiupeng Yan, Binyou Lian, Youyun Feng, Fan Wang, Jianbao Liu, Xiang Wan, Weicai School of Materials Science and Engineering Xihua University Sichuan Chengdu610039 China Xiamen Tungsten Co. Ltd. Fujian Xiamen361009 China China National R&D Centre for Tungsten Technology Fujian Xiamen361009 China Southwestern Institute of Physics Sichuan Chengdu610064 China

Potassium doped tungsten (AKS-W) is a promising plasma facing material (PFM) in nuclear reactors application, whereas its up-scaling manufacturing poses a challenge. In this study, large-scale AKS-W sheets with 85 ppm potassium (K) dopant were manufactured by powder metallurgy and hot rolling through a mass production route in the real industry to investigate the evolution of K bubbles and microstructure and their effects on the properties of W. Compared with pure tungsten (PW) sheet counterparts, the AKS-W sheets showed compatible densification and thermal conductivity at room temperature. doping with K led to evident hardness increase both in the sintered and deformed states, which was owing to microstructure refining caused by the pinning effect of K on the grain boundaries and dislocations during sintering and thermomechanical deformation. K bubble evolution mechanisms of AKS-W blocks during sintering and dynamic break-up of K ellipsoids during hot-rolling were discussed. © 2023, The Authors. All rights reserved.

关键词： Potassium

来源：评论

学校读者我要写书评

暂无评论

research on Power Electronics Converter real-time Simulation Modeling Method Based on SILdP

Research on Power Electronics Converter Real-time Simulation...

引用

Power Science and technology (ICPST), IEEE International Conference on

作者： Jin Liu Pengbo Han Zeqi Hong Hui Luo Siyang An Shujun Yao School of Electrical and Electronic Engineering North China Electric Power University Beijing China State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid National Energy Power Grid Technology R&D Centre Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China

ISBN: (数字)9798350349030

ISBN: (纸本)9798350349047

Generally, detailed model of power electronics converter is used in electromagnetic transient simulations. It will use large sources of hardware in FPGA and the speed of simulation is slow. This paper is focus on the modeling method of real-time simulation, and proposed a new model of converter which based on the semi-implicit latency decoupling and paralleling (SILdP) technology. According to the proposed model, the SILdP model of voltage source converter(VSC) is build up. Base on the comparative between the SILdP VSC model and the simulation result waveform of PSCAd model, give the verification that the accuracy and effectiveness of the proposed SILdP VSC model. Finally, the SILdP VSC model is finished the verification in the FPGA experiment platform.

关键词： Accuracy Computational modeling Simulation Voltage Mathematical models real-time systems Numerical models

来源：评论

学校读者我要写书评

暂无评论

Identification of faulty IGBT switches of multi-level inverter using machine learning random forest algorithm

引用

AIP Conference Proceedings 2024年第1期2966卷

作者： Sivakumar Muthusamy Prasad Chandramohanan Vimalakeerthy devadoss Humaid Al Hinai Baskar Gopal Chandrasekar Subramaniam Electrical Engineering University of Technology and Applied Sciences – Nizwa Oman SonaPERT R&D Centre Sona College of Technology Salem-636005 Tamilnadu India

Multilevel inverter technology is the best preferred choice of high and medium power industrial control applications and its reliability is often lowered by the solid state switches such as IGBT/MOSFET. Timely monitoring and accurate identification of faulty switches is always a challenging area. Numerous measures using current measurement have been recommended to identify and localize any fault in switching devices of inverters. In view of the complications of load current addressed fault finding practices, this work focuses on voltage features of inverter which is independent of load variations. random forest algorithm is a dominant machine learning process useful in the alignment of large data base and it is considered in this work for identification of faulty switches of multi-level inverter. results show that random forest algorithm can be used for finding the faulty switches of multi-level inverter in an effective manner.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Enhancing Student Outcomes with LSTM-CNN and data Analytics in Higher Education

Enhancing Student Outcomes with LSTM-CNN and Data Analytics ...

引用

Intelligent & Innovative Practices in engineering & Management (IIPEM), International Conference on

作者： S.K.B. Sangeetha S.. Maheswari Sukumar rajendran Sandeep Kumar Mathivanan Balamurugan Balusamy Meenakshi Verma Department of Computer Science and Engineering SRM Institute of Science and Technology Chennai India Department of Computer Science and Engineering VelTech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Chennai India School of Computing Science Engineering and Artificial Intelligence VIT Bhopal University Madhya Pradesh India School of Computer Science and Engineering Galgotias University Greater Noida India Delhi-National Capital Region (NCR) Shiv Nadar University India Symbiosis Centre for Management Studies Bengaluru Campus Symbiosis International (Deemed University) Pune India

ISBN: (数字)9798350390049

ISBN: (纸本)9798350390056

With a focus on the use of Long Short-Term Memory (LSTM) and Convolutional Neural Network (CNN) approaches to predict students' academic performance, the study provides an extensive review of the literature on the application of artificial neural networks (ANNs) and machine learning (ML) techniques. The study highlights the possible advantages of implementing cutting-edge technology innovations like analytics and data mining in learning environments. The analysis reveals that the reviewed literature primarily focuses on higher education. The results show that LSTM-CNN and data mining methodologies are consistently integrated, suggesting a trend in using these combined approaches to evaluate academic progress. No observable patterns were found in spite of the variability in the input variables, which was dictated by the study's context and the availability of data. It is acknowledged, nevertheless, that there is a dearth of hard data regarding the effective application of these strategies for raising student achievement and outcomes. The study emphasizes how critical it is to close the theoretical and practical divides regarding the limited applicability of LSTM-only CNN models in practical educational contexts. It highlights the need for more research to address this discrepancy and suggests putting more effort into creating and putting into practice strategies that directly improve student performance and help schools achieve their goals.

关键词： deep learning Technological innovation Accuracy Social networking (online) Soft sensors Education Transfer learning Convolutional neural networks Hybrid learning Long short term memory

来源：评论

学校读者我要写书评

暂无评论

Pa Layer Tuned Via Ta-Loaded Stabilized Chemically Converted Graphene Oxide Sandwich for High-Performance Forward Osmosis

SSRN

引用

SSrN 2023年

作者： ren, Tian-Xiang Jia, rui Xu, Zhen-Liang Fang, Yin-Xin Yu, Miao Jin, Xiao-Gang Ma, Xiao-Hua Chaoyang, Feng State Key Laboratory of Chemical Engineering Membrane Science and Engineering R&D Lab Chemical Engineering Research Center School of Chemical Engineering East China University of Science and Technology 130 Meilong Road Shanghai200237 China Department of Chemical Engineering and Applied Chemistry Pulp & Paper Centre University of Toronto 200 College Street TorontoONM5S 3E5 Canada School of Materials Science and Engineering

Graphene oxide (GO) has been widely used in the development of nanocomposite membranes for the treatment of water and desalination. However, poor structural stability and low permeability are limiting factors for the practical use of GO membranes in water purification applications. In this work, high-performance forward osmosis (FO) membranes were fabricated by chemical conversion of graphene oxide as an intercalation layer. Chemically converted graphene oxide (CCG) improved the stability of GO. Fe3+ acted as a bridge connecting the substrate and CCG by chemical bonding, which improved the adhesion strength of CCG on the substrate membrane. They ensured that the membrane remained stable in the 70 h test. Molecular dynamics demonstrates that TA slows MPd diffusion. Finally, tannic acid (TA) molecules loaded on the CCG tuned the polyamide (PA) layer structure, and CCG reduced the PA layer thickness, which reinforced the permeability (46.40 L m-2 h-1) and the salt rejection (3.07 g m-2 h-1). This work puts forward a quite enlightening emerging thinking for the preparation of stable and excellent-performance GO thin-film nanocomposite (TFN) FO membranes. © 2023, The Authors. All rights reserved.

关键词： Graphene

来源：评论

学校读者我要写书评

暂无评论

Effect of Surface Activation on the Corrosion resistance of a MAO/Ni-P Composite Coating on LZ91 Magnesium Alloy

引用

Journal of the Taiwan Institute of Chemical Engineers 2023年第1期147卷

作者： Chen, Chi-An Lee, Jeou-Long Jian, Shun-Yi Lee, Chia-Yu Ger, Ming-der Combination Medical Device Technology Division Medical Devices R&D Service Department Metal Industries Research & Development Centre Kaohsiung802 Taiwan Department of Chemical and Materials Engineering Lung Hwa University of Science and Technology Taoyuan330 Taiwan Department of Material Engineering Ming Chi University of Technology New Taipei City Taiwan Center for Plasma and Thin Film Technologies Ming Chi University of Technology New Taipei Taiwan Graduate School of Defense Science Chung Cheng Institute of Technology National Defense University Taoyuan Taiwan Department of Chemical & Materials Engineering Chung Cheng Institute of Technology National Defense University Taoyuan Taiwan System Engineering and Technology Program National Chiao Tung University Hsin-Chu Taiwan

Background: LZ91 Magnesium alloy with a dual-phase structure has improved mechanical properties and a low density of about 1.48 g/cm3 but their limited resistance to corrosion limits their application. Therefore, it is a great challenge to increase the stability of LZ91 alloys under corrosive factors and environments. Methods: This study uses micro-arc oxidation (MAO) and an electroless nickel-phosphorus (Ni-P) plated composite film to increase the corrosion resistance of LZ91 magnesium alloy. Before electroless Ni-P plating, the MAO layers are activated by palladium catalysts at different pH values to produce composite coatings. SEM, EdS and Image J are used to determine the surface properties and elemental composition of the samples. The corrosion resistance is measured using a potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS) in 3.5 wt.% NaCl solution. Findings: The results show that the MAO coating is activated by an acid catalyst and the surface is obviously corroded. The electroless Ni-P plating grows into the MAO coating and the substrate corrodes. Therefore, corrosive medium (chloride ion) easily enter to the substrate and pitting corrosion occurred. On the contrary, activation by a neutral catalyst (pH=7) maintains the original structure of the MAO coating and provides a good bonding interface for the Ni-P coating. Form the potentiodynamic analysis can be finds that the corrosion potential for the neutral catalyst treated sample is -0.35V and the corrosion current density value is 1.77×10−6 A/cm2, so the corrosion characteristic become better than the acid catalyst treated samples. In terms of the long-term resistance after 48 h, EIS analysis shows that the resistance value remains at about 7.6×104 Ω•cm2. A composite coating that is compact and with excellent resistance to corrosion resistance is produced, which provides better protection for LZ91 magnesium alloys. © 2023 Taiwan Institute of Chemical Engineers

关键词： Corrosion resistance

来源：评论

学校读者我要写书评

暂无评论

A review on the significant classification of additive manufacturing

A review on the significant classification of additive manuf...

引用

International Conference on recent Advancements in Biomedical engineering 2021, ICrABE 2021

作者： Shanmugam, ragavanantham ramoni, Monsuru O. Chandran, Jishu Mohanavel, Vinayagam Pugazhendhi, Lakshmanan Advanced Manufacturing Technology School of Engineering Math and Technology Navajo Technical University CrownpointNM87313 United States Industrial Engineering School of Engineering Math and Technology Navajo Technical University CrownpointNM87313 United States Department of Mechanical Engineering Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology Tamilnadu Chennai600062 India Centre for Materials Engineering and Regenerative Medicine Bharath Institute of Higher Education and Research Tamilnadu Chennai600073 India Department of Mechanical Engineering Chennai Institute of Technology Tamilnadu Chennai600059 India

Additive manufacturing (AM) implementation has advanced beyond prototyping towards becoming an extremely configurable manufacturing process with the illustrated ability to change conventional manufacturing in the future generations entirely. AM is completely based on rapid Prototyping (rP), which helps fabricate critical and immense structure with 3d CAd software. The primary goal of this method is to create a product with optimal features such as compact, increased energy absorption, material reduction, insulation, and heat exchange. On the opposite, modeling and generating lattice structures and implementing different applications are all required. This review will get into the concepts of various classifications of additive manufacturing and its features. © Journal of Physics: Conference Series 2021.

关键词： rapid prototyping

来源：评论

学校读者我要写书评

暂无评论

Chromium oxide regulated nanoparticles biosynthesis in Manihot esculenta leaf extract

引用

Materials Today: Proceedings 2022年 49卷 1448-1452页

作者： K. Thara Ignatius Navis Karthika C. ramesh M.S. dheenadayalan R&D Centre Bharathiar University Coimbatore Tamilnadu India Department of Chemistry SSM Institute of Engineering and Technology Dindigul Tamilnadu India Department of Chemistry PSNA College of Engineering and Technology Dindigul Tamilnadu India Department of Chemistry SSM College of Engineering Komarapalayam Tamilnadu India PG & Research Department of Chemistry G.T.N Arts College Dindigul Tamilnadu India

The green synthesis of nanoparticles using plant extracts plays an important role in the field of nanotechnology. The potential of biomolecules present in plant extracts in reducing metal ions to nanoparticles in a single step of green synthesis process is very important. In this study we report on synthesis of Chromium oxide nanoparticles (Cr 2 O 3 ) by reduction of potassium chromate solution with Manihot esculenta leaf extract. The presence of water soluble carbohydrates which have an aldehyde group may lead the formation of Cr 2 O 3 nanoparticles. The fabricated Chromium oxide nanoparticles were confirmed by UV–Vis spectroscopy, X-ray diffraction (Xrd), Fourier transform-infrared spectroscopy (FTIr) and Scanning electron microscopy (SEM).Xrd and UV–Visible absorption studies. The images showed that the size of NPs of Cr 2 O 3 varied with average crystalline size 85–100 nm of nanosized Cr 2 O 3.

关键词： Bio synthesis Manihot esculenta Chromium oxide Potassium chromate solution

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：