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An investigation on mechanical properties of AA336/Al2O3 composites by Duralcan process

Materials Today: Proceedings 2022年 62卷 1299-1302页

作者： Arravind, R. Kaliappan, S. Vijayananth, Suyamburajan Patil, Pravin P. Sathya Prakash, M. Ramasamy, N. Department of Aeronautical Engineering Paavai Engineering College Namakkal 63721 India Department of Mechanical Engineering Velammal Institute of Technology Chennai 601204 India Department of Mechanical Engineering Vels Institute of Science Technology and Advanced Studies Chennai 600117 India Department of Mechanical Engineering Graphic Era Deemed to be University Bell Road Clement Town 248002 Uttarakhand India Department of Mechanical Engineering Prathyusha Engineering College Tiruvallur 602025 India

The Duralcan technique was utilized to manufacture nanocomposites of aluminium metal matrix and Al2O3 nanoparticles. It is a form of stir casting in which metals and ceramics are layered one on top of the other and composites are formed by a heating and stirring process. The composite was composed of nano Al2O3 at weight percentages of 1%, 1.5%, and 2.5%, respectively. The wear test was conducted through a pin on the disc, and the frictional force analysis is also performed. The effect of the Al2O3 content in the matrix on the wear characteristics was investigated. © 2022

关键词： Wear of materials

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IoT based Energy Efficient using Wireless Sensor Network Application to Smart Agriculture

IoT based Energy Efficient using Wireless Sensor Network App...

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2023 International Conference on Intelligent Data Communication Technologies and Internet of Things, IDCIoT 2023

作者： Deepa, R. Sankar, M. Rathiya, R. Sankari, C. Venkatasubramanian Kalaivani, R. Vels Institute of Science and Technology and Advanced Studies Cse India Vel Tech Rangarajan Dr. Sagunthala RandD Institute of Science and Technology Cse India Computer Science and Engineering Dr. Ngp Institute of Technology Coimbatore India Chennai Institute of Technology Eee India Gitam University Bangalore Cse India Erode Sengunthar Engg College Ece India

ISBN: (纸本)9781665474511

With the use of WSNs, farmers may access a wealth of data in the agricultural sector. To boost yields and quality, farmers are increasingly turning to a management method known as precision agriculture (PA), which makes use of technological advances in information gathering and analysis. Developing extremely efficient and environmentally friendly farming via the use of wireless sensor technology and management systems. With PA management, farmers no longer have to tend to their crops in the same way, no matter the conditions at their plots. This study presented an IoT based smart agriculture by using the platform for energy efficient wate management (EEWMP). The effectiveness of these models is assessed in terms of energy usage and network stability. According to the testing findings, the energy-efficient water management platform doubles network stability while using 25% less energy than the current approach. With little modifications, the proposed model can be best working with different models of the irrigation such as irrigation in terms pf drip, irrigation in terms of sparkler, and surface irrigation. Additionally, it can be used in small farms in developing nations with their already-existing 2G or 3G connection infrastructures. © 2023 IEEE.

关键词： Irrigation

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Covalent Organic Framework Membranes with Spatially Aligned Ionic Sites Achieve Record Thermo-Osmotic Output Power Density

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advanced Energy Materials 2025年第0期

作者： Lai, Zhuozhi Su, Haitao Xian, Weipeng Guo, Qing Meng, Qing-Wei Wu, Di Wang, Sai Sun, Qi Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological Engineering Zhejiang University Hangzhou310027 China Hangzhou Institute of Advanced Studies Zhejiang Normal University Hangzhou311231 China

The advancement of nanofluidic membranes is critical for mimicking bioelectrogenic ion-channel mechanisms and boosting output power density, essential for sustainable energy applications. The energy conversion efficiency of these devices significantly relies on the ion conductivity and permselectivity of the membranes. Membranes with aligned one-dimentional (1D) pores, high pore density, and organized dangling ionic groups are theorized to offer superior ion permeability and selectivity, yet these configurations remain significantly underexplored. Herein, the successful fabrication of oriented ionic covalent organic framework (COF) membranes is presented. These membranes exhibit precisely aligned cationic and anionic sites within their pore channels, achieved through post-synthetic modification using click chemistry, which shows high ion permselectivity and conductivity. When incorporated into full-cell thermo-osmotic generators, these membranes deliver an impressive output power density of 195 W m−‍2 under a 50-fold salinity gradient (NaCl: 0.01 m ‖ 0.5 m ‖ 0.01 m) along with a 35 K temperature differential. This power output substantially increases 2.41 times to 471 W m−2 when the salinity gradient is enhanced tenfold, surpassing the performance of existing nanofluidic membranes under similar conditions and thus offering a promising avenue for enhancing efficiency in energy and resource utilization. © 2025 Wiley-VCH GmbH.

关键词： Dialysis membranes

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Waveguide-integrated optical modulators with two-dimensional materials

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Journal of Semiconductors 2023年第11期44卷 8-25页

作者： Haitao Chen Hongyuan Cao Zejie Yu Weike Zhao Daoxin Dai State Key Laboratory for Modern Optical Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityZijingang CampusHangzhou 310058China College of Advanced Interdisciplinary Studies&Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices National University of Defense TechnologyChangsha 410073China Nanhu Laser Laboratory National University of Defense TechnologyChangsha 410073China Ningbo Research Institute Zhejiang UniversityNingbo 315100China

Waveguide-integrated optical modulators are indispensable for on-chip optical interconnects and optical *** cope with the ever-increasing amount of data being generated and consumed,ultrafast waveguide-integrated optical modulators with low energy consumption are highly *** recent years,two-dimensional(2D)materials have attracted a lot of attention and have provided tremendous opportunities for the development of high-performance waveguide-integrated optical modulators because of their extraordinary optoelectronic properties and versatile *** paper reviews the state-of-the-art waveguide-integrated optical modulators with 2D materials,providing researchers with the developing trends in the field and allowing them to identify existing challenges and promising potential ***,the concept and fundamental mechanisms of optical modulation with 2D materials are ***,a review of waveguide-integrated optical modulators employing electro-optic,all-optic,and thermo-optic effects is ***,the challenges and perspectives of waveguide-integrated modulators with 2D materials are discussed.

关键词： optical modulation two-dimensional(2D)materials on-chip waveguide

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Comparative Analysis of Video Transmission in Vehicular Networks using IEEE 802.11g and IEEE 802.11p Standards 1

Comparative Analysis of Video Transmission in Vehicular Netw...

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1st International Conference on Advances in Electrical, Electronics and Computational Intelligence, ICAEECI 2023

作者： Moyeenudin, H.M. Kumar, S. Hari Narender, M. Jose Anand, A. Amutharaj, J. Vels Institute of Science Technology and Advanced Studies Chennai600117 India Kongunadu College of Engineering and Technology Department of ECE Trichy621215 India TKR College of Engineering & Technology Department of CSE Hyderabad500097 India KCG College of Technology Department of Electronics and Communication Engineering Tamil Nadu Chennai600097 India Raja Rajeswari College of Engineering Department of Information Science and Engineering Bengaluru560074 India

ISBN: (纸本)9798350342796

There is a difficulty in the implementation of vehicular networks due to the high cost of equipment and the limitations that current technology imposes for the implementation of VANET networks. According to the literature that emphasizes that despite present a good solution for connectivity in vehicular networks, their architecture is unfeasible due to the high cost involved, mainly in the installation and implementation of adequate infrastructure. The main objective of this work is to present a comparative analysis between the performance of the IEEE 802.11g and IEEE 802.11p standards, using the Ad Hoc on Demand Distance Vector Routing (AODV) routing protocol and through the Network Simulator (NS-2), find out which of the standards demonstrates a better performance in video transmission. In this context, network scenarios are simulated, in different situations applying movement of nodes, the performance results of the standards in the proposed network scenarios are compared and evaluated, obtained through data collection through simulations. The quality of the video transmitted by both standards are compared and evaluated, using QoE (Quality of Experience) metrics. © 2023 IEEE.

关键词： Ad Hoc On Demand Distance Vector Routing (AODV) IEEE 802.11g IEEE 802.11p Lowest cost Mobile network Routing protocol

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Retraction Notice: A Survey of advanced Learning Techniques Used for Initial Detection of vital Human organs Disorders through Iris

Retraction Notice: A Survey of Advanced Learning Techniques ...

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International Conference on Smart Structures and Systems (ICSSS)

作者： M Sandhiya A S Aneetha Department of Computer Science and Engineering VELS Institute of Science Technology & Advanced Studies (VISTAS)

ISBN: (数字)9798350384208

ISBN: (纸本)9798350384215

An approach of early detection that makes use of an optimization technique that was brought about by learning techniques. Artificial intelligence technology breakthroughs that can scan a patient’s body and diagnose the conditions they have would be expected by certain doctors. To gain a deeper understanding of the human body, iridology is an applied health practice. Images of iris can be acquired and interpreted using a variety of innovative techniques. Information on the human body and organ health is contained in Iris. Iridology is an academic discipline that examines the strengths and limitations of iris tissue to gain insight into the health of the body’s various organs. Iridology has grown more well-liked and trustworthy as a result of the quick growth of picture processing. Many iridology-based methods have been created recently that use certain iris features to detect the human disorders. The information contained herein displays every iris recognition method that has been studied along with the precision of each region. Future iridology research’ design and methodological decisions can be influenced by the studies outcomes.

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A Survey of advanced Learning Techniques Used for Initial Detection of vital Human organs Disorders through Iris

A Survey of Advanced Learning Techniques Used for Initial De...

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International Conference on Smart Structures and Systems (ICSSS)

作者： M Sandhiya A S Aneetha Department of Computer Science and Engineering VELS Institute of Science Technology & Advanced Studies (VISTAS)

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Synthesis of structurally diversified BINOLs and NOBINs via palladium-catalyzed C-H arylation with diazoquinones

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Science China Chemistry 2021年第9期64卷 1515-1521页

作者： Ji-Wei Zhang Fei Jiang Ye-Hui Chen Shao-Hua Xiang Bin Tan School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin150001China Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhen518055China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen518055China

Privileged biaryl frameworks,BINOL and NOBIN,were efficiently constructed with sole 1-DNQs as arylation reagents under one set of reaction *** judicious selection of palladium-catalytic system plays a pivotal role in the excellent *** transformation accommodated fairly broad substrate generality for both 2-naphthol and N-Boc-2-naphthylamine and afforded the structurally diversified BINOLs and NOBIN derivatives in high ***,the bromosubstituents which cannot survive in conventional palladium-catalyzed reactions were well-compatible with this set of conditions,providing an effective handle for further enriching the library of BINOLs and *** attempts on the asymmetric variant of this reaction were also performed with up to 80:20 er for BINOLs synthesis.

关键词： BINOLs NOBINs high selectivity C-H arylation palladium-catalysis

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A current state of metal additive manufacturing methods: A review

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Materials Today: Proceedings 2022年 59卷 1277-1283页

作者： Durai Murugan, P. Vijayananth, S. Natarajan, M.P. Jayabalakrishnan, D. Arul, K. Jayaseelan, V. Elanchezhian, J. Department of Mechanical Engineering RMK Engineering College Gummidipoondi Chennai601206 India Department of Mechanical Engineering Vels Institute of Science Technology and Advanced Studies Chennai600117 India Department of Mechanical Engineering Bharath Institute Higher Education and Research Chennai600126 India Department of Mechanical Engineering Sriram Engineering College Chennai602024 India Department of Mechanical Engineering Agni College of Technology Thalambur Chennai600130 India Department of Mechanical Engineering Prathyusha Engineering College Chennai602205 India Department of Mechanical Engineering Anand Institute of Higher Technology Kazhipattur Chennai603013 India

Alloys such as super alloys, Aluminium, titanium alloys are employed for metal additive manufacturing significantly. These alloys are used to make aircraft components, gas turbines and other structural areas. Additive manufacturing (AM), is also known as direct digital manufacturing methods, has improved the mechanical properties of additively manufactured metals. This paper overviews about various metal additive manufacturing methods on recent development and impact of process factors on mechanical behaviour, microstructures, formation of voids, surface status and appearance with respect to various additively manufactured metal alloys. In addition, this article reviewed about the printing challenges pertaining to cracks and void formation, behaviour of material, merits and limitations and layer by layer printed material appearance. Overall, this article gives an overview of metal additive manufacturing, including its benefits and limitations as a criterion for further research in additive manufacturing. © 2021

关键词： 3D printers

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Optimizing EV Performance using Cascaded ANFIS based MPPT for High Gain Sepic-Zeta Converter

Optimizing EV Performance using Cascaded ANFIS based MPPT fo...

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Sustainable Communication Networks and Application (ICSCNA), International Conference on

作者： Indira Kumar. A N. Janaki Department of Electrical and Electronics Engineering Vels Institute of Science Technology & Advanced Studies Chennai

Electric vehicles (EVs) acts an essential role in the decarbonization of transportation and overall efforts to reduce greenhouse gas emissions. EV creates zero tailpipe emissions, as they are powered by electricity rather than fossil fuels. This directly contributes to reducing local air quality improvement, particularly in metropolitan areas, and contaminants in the air where emissions from conventional vehicles are a significant concern. This paper presents a novel approach for optimizing EV performance by employing a cascaded ANFIS based MPPT technique in conjunction with a high-gain SEPIC-Zeta converter. The proposed high gain converter offers advantages such as high voltage gain, reduced input current ripple and improved voltage conversion efficiency. The cascaded architecture of the ANFIS-based MPPT technique provides enhanced tracking accuracy, robustness and adaptability to varying environmental factors including temperature changes and sun irradiation. By dynamically adjusting the operating point of the PV array, the system ensures that the EV battery receives the maximum available power from the PV source, resulting in increased energy harvesting efficiency. The optimized power conversion process achieved through the cascaded ANFIS-based MPPT and high-gain SEPIC-Zeta converter contributes to the advancement of EV technologies, promoting sustainable and efficient transportation systems.

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