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A crosslinked waterborne poly(vinyl acetate) for greenhouse gas fixation with improved elastomeric properties, shape-memory ability, and recyclability

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Journal of Environmental Chemical engineering 2023年第6期11卷

作者： Chen, Yen-Chuan Huang, Ying-Chi Huang, Yi-Hua Lin, Ying-Feng Huang, Ho-Ching Jeng, ru-Jong Cheng, Yu-Wei Wu, Chien-Hsin Chanda chemical corp. Taipei10345 Taiwan Department of Chemical Engineering Ming Chi University of Technology New Taipei City243303 Taiwan Institute of Polymer Science and Engineering National Taiwan University Taipei106319 Taiwan Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei106319 Taiwan Biochemical Technology R&D Center Ming Chi University of Technology New Taipei City243303 Taiwan

The development of raw materials from methane and carbon dioxide holds significant potential to cut greenhouse gas (GHG) emissions and reduce the global carbon footprint. As an important monomer, vinyl acetate (VAc) can be produced by the consumption of acetic acid, which will potentially contribute to the reduction of GHGs emission. However, polymers based on VAc are usually prepared from emulsion polymerization in water which brings about the challenges of using modification processes to improve their properties. Here, a newly developed crosslink was able to establish covalently adaptable networks directly in water, enabling the formation of a poly(vinyl acetate) (PVAc) composite. As a result, PVAc emulsions using a monomer of 100% VAc could be transformed from a soft and weak adhesive polymer into an elastomeric polymer composite network with an elongation (775%) at break and flexibility. With the enhanced rubbery modulus, the polymer possesses characteristics for shape-memory material applications with 93% shape fixity and 99% shape recovery after repeated deformation and shape fixity for three times. The recyclability of the PVAc thermosets was demonstrated after granulating and remolding three times, representing an opportunity for designing a greenhouse gas fixing material. © 2023 Elsevier Ltd

关键词： Carbon dioxide

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A novel chemical-free porous carbon micro-rods derived from used wooden chopsticks (CS) for solid-state symmetric supercapacitor device

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diamond and related Materials 2024年 141卷

作者： Senthilkumar, Arun Kumar Kumar, Mohanraj Chen, Ching-Lung Murugan, Sandhiya Ho, Mon-Shu Chang, Jih-Hsing Department of Environmental Engineering and Management Chaoyang University of Technology Taichung413310 Taiwan Department of Applied Chemistry Chaoyang University of Technology Taichung413310 Taiwan Department of Safety Health and Environmental Engineering Ming Chi University of Technology New Taipei City24301 Taiwan Center for Environmental Sustainability and Human Health Ming Chi University of Technology New Taipei City24301 Taiwan Biochemical Technology R&D Center Ming Chi University of Technology New Taipei City24301 Taiwan Department of Physics National Chung Hsing University Taichung City40227 Taiwan

Energy storage application technology is still in its infancy, and carbon-based materials have gained attention in recent years. The finding of low-cost carbon material with controllable characteristics for energy application is quite a complex thing. The major objective of this work is to carbonize used wooden chopsticks at various temperatures in order to create porous carbon materials. Electrochemical studies were tested in 1 M KOH electrolyte assessed by a three-electrode system for supercapacitor application. Among the prepared carbon materials, CS-7 material prepared at 700 °C with a carbon ratio of 88.2 %, demonstrated a high specific capacitance of 184.66 F/g at 0.3 A/g, and the material exhibited an excellent capacitance endurance of 96 % after 10,000 cycles. An asymmetric solid-state supercapacitor was developed for real-time application to study the electrochemical characteristics of the porous carbon material. This study clarifies the creation of complex porous carbon using waste biomass as an energy storage medium. © 2023 Elsevier B.V.

关键词： Supercapacitor

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dual Port Merged-Elliptical Patch with Tapered Ground designed for Integrated Narrow WiMAX/C-band and Wideband Antenna for Multiple Wireless Applications

Dual Port Merged-Elliptical Patch with Tapered Ground Design...

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disruptive Technologies (ICdT), International Conference on

作者： Manish Sharma Kanhaiya Sharma rana Gill Jayasheel Kumar Kalagatoori Archakam Amandeep Nagpal Ali Saeed Chitkara University Institute of Engineering and Technology Chitkara University Punjab India SIT Pune Symbiosis International (Deemed University) Pune India Dept.of ECE University Centre for R&D Chandigarh University Gharuan Mohali Punjab India New Horizon College of Engineering Bangalore India Lovely Professional University Phagwara Panjab India Radiology Techniques Department College of Medical Technology The Islamic University Najaf Iraq

ISBN: (数字)9798331519582

ISBN: (纸本)9798331519599

In this manuscript, a dual-elliptical EM-wave inset feed antenna radiating electromagnetic energy with tapered ground is designed for WiMAX/C-band and Microwave-millimeter-wave band applications. The single-port antenna, a flower-type patch with a circular slot, is printed on the surface of the thin substrate and ground on opposite surfaces. This achieves bandwidth in Band1 of 3.22GHz-4.45GHz and Band2-bandwidth of 14.23GHz-40.0GHz. The identical patch is arranged in an orthogonal sequence, forming a four-port MIMO with bandwidth by all the patches nearing 3.00GHz-5.90GHz and 14.32GHz-40.0GHz. The MIMO configuration achieves isolation of more than −10.0dB in Band1 and more fantastic than −20.0dB in Band2. The diversity parameter includes $\text{ECCMMW} < 0.05, \text{dGMMW} > 9.998\text{dB}$ , TArCMMW more than −4.0dB, and $\text{CCL}_{\text{MMW}} < 0.40\mathrm{b}/\mathrm{s}/\text{Hz}$ with stable 2-d radiation patterns.

关键词： Microwave antennas Microwave integrated circuits Slot antennas MIMO Frequency diversity Broadband antennas Microwave FET integrated circuits Wideband Substrates Standards

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Communication-Less Adaptive Overcurrent relay Coordination for Service restoration in distribution Systems

SSRN

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SSrN 2023年

作者： Wong, JunYing Tan, ChiaKwang rahim, N.A. Tan, rodney H.G. Higher Institution Center of Excellence University of Malaya Power Energy Dedicated Advanced Centre Wisma R&D University of Malaya Kuala Lumpur59100 Malaysia Faculty of Engineering Technology and Built Environment UCSI University Cheras Kuala Lumpur56000 Malaysia

Numerous adaptive protection schemes (APS) have been developed to tackle the issue of changing fault current magnitudes and directions in a reconfigurable network. System-wide communication systems are the primary enablers in these proposed APS. However, these systems require expensive infrastructure and are prone to cyberattacks and communication errors. Therefore, a subclass of studies has proposed decentralized schemes to eliminate the downsides of communicative systems. However, these studies rely on fault parameters to determine the correct relay settings in their proposed APS and applies for a limited number of network topologies only. In contrast, this paper combines the use of local load flow information and the customary fault parameters to realize a comms-less adaptive protection scheme that maintains OCr coordination after service restoration in highly reconfigurable network topologies. relay settings are selected from setting groups optimized using k-means clustering and linear programming. A locally deployed artificial neural network determines the appropriate setting group by referring to the fault location estimates and load flow measurements. The scheme produced promising results in most overcurrent relay settings selections when demonstrated on the IEEE 33-bus test distribution system under various fault and loading conditions. © 2023, The Authors. All rights reserved.

关键词： Network topology

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Mechanisms Contributing to the Performance of Uncalcined Bayer's red Mud as a Supplementary Cementitious Material in High Quality Concrete

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SSrN 2024年

作者： Chen, Shaoliang razaqpur, Abdul Ghani Wang, Tuanjie Chen, Bo Sino-Canada Joint R&D Centre on Water and Environmental Safety College of Environmental Science and Engineering Nankai University Tianjin300457 China Department of Civil Engineering McMaster University HamiltonONL8S 4L8 Canada College of Civil Engineering Zhengzhou University of Industrial Technology Henan Zhengzhou451150 China College of Economics and Management Tianjin University of Science and Technology Tianjin China

To eliminate the toxic stockpiles of red mud (rM) globally, uncalcined, iron-rich Bayer's rM is used as 15 wt.% replacement for ordinary Portland cement (OPC) to produce concrete, termed rMC, with strength, stiffness, shrinkage and chloride diffusivity comparable or superior to those of the control concrete made with OPC. Using advanced testing and analytical tools, the mechanisms responsible for the performance of rMC are identified as its low water/binder (W/B) requirement, dense microstructure, and the pozzolanicity/reactivity of rM. To reduce the W/B requirement, rM is treated akin to aggregates, and a new method is proposed to determine its water absorption. © 2024, The Authors. All rights reserved.

关键词： Portland cement

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Predictive Maintenance in IoT Networks Using a Temporal Attention Mechanism Based Federated Convolutional Neural Network

Predictive Maintenance in IoT Networks Using a Temporal Atte...

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Innovation in technology (ASIANCON), Asian Conference on

作者： Naga Venkata ramakrishna Guduri r.M. dilip Charaan Kalaiyarasi r Samuthira Pandi V d.Laxma reddy Selvaprabhu. T Faculty of Engineering University of Technology and Applied Sciences-Al Musannah Sultanate of Oman Department of Computer Science and Engineering Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology Chennai Tamil Nadu India Department of Artificial Intelligence and Data Science Rajalakshmi Institute of Technology Chennai Tamil Nadu India Centre for Advanced Wireless Integrated Technology Chennai Institute of Technology Chennai Tamil Nadu India Department of ECE MLR Institute of Technology Hyderabad India Department of CSE Dhanalakshmi College of Engineering Chennai Tamil Nadu India

ISBN: (数字)9798350354218

ISBN: (纸本)9798350354225

In the era of Industry 4.0, edge devices in industrial settings generate vast amounts of data crucial for process optimization and Predictive Maintenance (PM). Traditional cloud-based approaches for handling this data are becoming untenable due to cost, latency, and privacy issues. Federated learning emerges as a viable solution, offering localized and efficient data processing while mitigating these challenges. This paper presents a Federated Convolutional Neural Network with Temporal Attention Mechanism (FedCNN-TAM) for PM tasks in Internet of Things (IoT) networks. This model leverages temporal features in sensor data to enhance predictive accuracy. Evaluated on the CMAPSS dataset, FedCNN-TAM outperforms representative models with a significant performance gain. This model exhibits the potential for broader applications in industrial IoT, setting the stage for future research on its scalability and adaptability to multi-modal data types.

关键词： Adaptation models Temperature distribution Technological innovation Attention mechanisms Accuracy Predictive models data models real-time systems Convolutional neural networks Predictive maintenance

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Investigation on space charge and charge trap characteristics of gamma-irradiated epoxy micro–nano composites

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High Voltage 2020年第2期5卷 191-201页

作者： Myneni Sukesh Babu ramanujam Sarathi Nilesh Jayantilal Vasa Takahiro Imai Department of Electrical Engineering Indian Institute of Technology MadrasChennai 600036India Department of Engineering Design Indian Institute of Technology MadrasChennai 600036India Toshiba Corporation Powerand Industrial Systems R&D Centre1Toshiba-choFuchu-shiTokyo 183–8511Japan

Epoxy nano–micro composite specimen prepared with micro silica and ion trapping nanoparticle,by shear mixing process,was exposed to gamma radiation and its performance for space charge and charge trap characteristics were *** threshold for space charge accumulation of epoxy nanocomposites reduces and rate of space charge accumulation increases with an increase in dosage of gamma *** average growth of space charge density during poling and charge decay rate during depoling are relatively higher for gamma-irradiated specimens than the virgin *** initial surface potential has a marginal reduction with increase in the dosage of gamma radiation,but the surface potential decay rate has increased *** distribution characteristics indicate more number of shallow traps and increase in charge mobility after *** relative permittivity and loss tangent of the specimens have high impact due to gamma *** activation energy calculated from dC conductivity by Arrhenius law reduces with increment in radiation ***-induced breakdown spectroscopy reflected no change in elemental composition with gamma-irradiated *** variation in plasma temperature and ion line to atomic line intensity ratio with dosage of gamma radiation have direct correlation to the Vickers hardness number of the specimens.

关键词： composites charge composite

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Conflict Mechanism Analysis Method for Electric Vehicles Participating in Multiple Types of Power Grid Ancillary Services

Conflict Mechanism Analysis Method for Electric Vehicles Par...

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2023 International Conference on Power System technology, PowerCon 2023

作者： Xue, Yinjuan Chen, Qifang Cai, Haiqing Xia, Mingchao Gu, Haohan School of Electrical Engineering Beijing Jiaotong 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 Csg Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China

ISBN: (纸本)9798350300222

As the high-quality flexible resource of the grid, electric vehicles (EVs) can provide multiple auxiliary services for the grid at the same time. However, due to the one-way charging and discharging of EVs, as well as the limitation of power and capacity, which may cause availability conflicts when EVs participate in different auxiliary services simultaneously. This paper focuses on the analysis of the conflict mechanism of EVs participating in the secondary frequency regulation and peak shaving ancillary services at the same time. The impact mechanism between different auxiliary services in this conflict mode is revealed from the two aspects of limit conflict and charging and discharging instruction conflict, and the results of availability conflict of the two types of auxiliary services are verified and analyzed through simulation examples. © 2023 IEEE.

关键词： Frequency modulation

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Structural,morphological,optical and antibacterial performances of rare earth(Sm)-doped ZnO nanorods

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Journal of rare Earths 2024年第11期42卷 2119-2127,I0005页

作者： A.ravi J.Samuel S.Sahaya Jude dhas S.Usharani Turibius Simon d.Senthil Kumar S.K.Jasmin Vijitha A.Sivakumar raju Suresh Kumar C.S.Biju Department of Physics University College of EngineeringKancheepuram631552TamilnaduIndia Department of Physics and Research Centre Malankara Catholic CollegeMariagiri629153TamilnaduIndia Manonmaniam Sundaranar University Abishekapatti627012TirunelveliTamilnaduIndia Saveetha School of Engineering Saveetha Institute of Medical and Technical SciencesSaveetha UniversityChennaiTamil Nadu602105India Department of Chemistry S.I.V.E.T CollegeGowrivakkamChennai600073TamilnaduIndia Department of Biotechnology Vivekanandha College of Arts and Science for Woman(Autonomous)Elayampalam637205TiruchengodeNamakkalTamilnaduIndia Department of Physics Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and TechnologyAvadiChennai600062India Department of Physics&Research Centre Muslim Arts CollegeThiruvithancode629174TamilnaduIndia Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior Institute of GeochemistryChinese Academy of SciencesGuiyang550081China Department of Chemistry College of ScienceKing Saud UniversityP.O.Box 2455Riyadh11451Saudi Arabia Department of Physics St.Alphonsa College of Arts and ScienceSoosaipuramKarinkal629157Tamil NaduIndia

The significant rise of ultra-violet(UV) radiation and pathogenic infectious bacteria poses a serious threat to global *** researchers' interests are attracted by novel materials with strong UVblocking ability,antibacterial activity and low toxicity to other *** this case,a simple wet chemical method with different annealing temperatures(400,500,and 600℃) was employed to create highly effective rare earth(Sm)-doped ZnO ***(101) plane of wurtzite ZnO shifts towards a lower angle with increasing annealing temperature,according to the X-ray diffraction(Xrd) study findings,which additionally establishes the consequence of lattice *** of doublet peaks of Sm 3d(Sm 3d_(5/2) and Sm 3d_(3/2)) in the X-ray photoelectron spectroscopy(XPS) spectrum clearly validates the substitution of Sm^(3+) ions in the 500℃-annealed *** 500℃-annealed nanorods exhibit combined performances of the wide band gap,improved UV absorbance,and vivid green luminescent emission(563 nm).Additio nally,the nanorods have favorable UV-blocking execution of 96% for UVA at 360 nm,92% for UVB at 320 nm,and 57% for UVC at 225 nm,which is greater than the majority of ZnO-related materials that have been reported up to this *** doping is also appropriate for improving bacterial inhibition against the two studied strains(Escherichia coli and Staphylococcus aureus),in addition to the intriguing features discussed ***,with maximum inhibition zone diameters of 20±0.72 and 18±0.57 mm,respectively,these nanorods exhibit high inhibitory action against *** and *** bacterial *** rare earth-doped material developed during the current experiment,which was annealed at 500℃,could potentially serve as an effective replacement for UV-blocking and antibacterial material,especially for biomedical applications.

关键词： Wet chemical method rare earth doping Metal oxide UV-Shielding Bacterial inhibition

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Energy-Efficient Cloud Computing through Blockchain-based resource Allocation and Green Contracts

Energy-Efficient Cloud Computing through Blockchain-based Re...

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recent Advances in Science and engineering technology (ICrASET), International Conference on

作者： G Manikandan Subbiah Swaminathan K.V. Kanimozhi K. Seethalakshmi N.Venkatesvara rao Department of Career Development Centre College of Engineering and Technology SRM Institute of Science and Technology Kattankulathur Tamil Nadu India Department of Information Technology Rajalakshmi Engineering College Chennai Tamil Nadu Department of Computer Science and Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Chennai Tamil Nadu India Department of Computer Science and Engineering Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Chennai Tamil Nadu India Department of Computer Science and Engineering J.N.N.Institute Of Engineering Ushaa GardenKannigaipair Chennai-Periyapalayam Highway India

ISBN: (数字)9798350388602

ISBN: (纸本)9798350388619

The study that is being carried out is a blockchain resource allocation, green contract, and renewable energy integration into the cloud computing environments as a way to increase efficiency, sustainability, and stakeholders' satisfaction. Through empirical analysis, significant improvements were observed across various metrics: the resource usage rate is up to 90% from 75%, 20%-800 kWh/hour reduction in energy consumption, a 20% decrease in heat emissions to 400 kg CO2/hour, cost efficiency is improved by 20% to $ \$ $8 per hour. Moreover, the renewable energy usage was at 50%, which was followed by 50% fossil fuel dependency, in contrast, and a 100% carbon offset. Integrity was ensured with security threats eliminated, reporting and audit became much more transparent and together with the standards the compliance was achieved. Stakeholders such as Providers and End Users experienced enhanced success as the level of satisfaction was made the same for both cloud service providers and consumers This research result highlights the importance of the utilization of the blockchain enabled solutions in the optimization of resources, reducing the energy consumption, promoting the wide-range use of the renewable sources of the energy, enhancing the sector security and transparency therefore improving the satisfaction levels of all stakeholders in the cloud computing operation. The cooperation between scientists and various stakeholders has remained the key factor for implementing sustainable ways that will benefit the industry.

关键词： Industries Cloud computing renewable energy sources Energy consumption Costs Green products Blockchains Stakeholders Security Sustainable development

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