检索结果-南通市图书馆

Distortion Analysis of Single V-groove Butt Welding on Heat Treatable Aluminum Alloys

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2005年第5期21卷 738-742页

作者： i.k.lee Department of Mechanical Engineering National Chiao Tung UniversityHsinchu TaiwanChina

in this study we conducted single V-groove butt welding （GTAW） on three types of heat treatable aluminum alloys 2024-T351, 6061-T6 and 7075-T6 and compared the angular distortion levels of the three aluminum alloys at different Vee preparation angles with or without restraint. Experimental results demonstrated that when the Vee preparation angle was 0° （i-shaped groove）, the angular distortion level of the restrained weldment can exceed that of the unrestrained weldments. Moreover, when the Vee preparation angle was 45°, 60° or 90°, the restrained weldment had lower angular distortion than the unrestrained weldments. The single Vee preparation angle （amount of filler metal） in butt welding affected the angular distortion of the weldment. Without restraint, the angular distortion tended to increase with the single Vee preparation angle. Meanwhile, the angular distortion tended to decrease when the single Vee preparation angle was 60% Additionally, a restrained weldment had high angular distortion when the single Vee preparation angle was 0°. Notably, the angular distortion tended to reduce with increasing single Vee preparation angle. The angular distortion of the weldment was minimized at an angle of 60°. However, the angular distortion increased when the Vee preparation angle exceeded 60% The high-temperature yield strength of a material also affected its angular distortion. Angular distortion increased with high-temperature yield strength. Experimental results also showed that, from the strongest to the weakest, the high-temperature yield strength of the three types of aluminum alloys followed the order 6061-T6 and 2024-T351〉7075-T6.

关键词： Angular distortion Aluminum alloy Single-V-groove

在线全文

学校读者我要写书评

暂无评论

岩土工程

岩土工程

Conversion of N-doped biochar from carotenoid-extracted Tetraselmis suecica and its application to produce supercapacitors

丛书名：根据美国 Pitman Publishing inc. 1983年英文版译出

1986年

作者：（澳）i.k.lee W.White O.G.ingles 同济大学俞调梅叶书麟曹名葆等译校

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2025年第5期151卷 410-423页

作者： Se Hun lee kang Hyun lee Sang-hwa lee Soo kweon lee Ok Sung Jeon Young Pyo Jeon Dongpyo Hong Young Joon Yoo Sang Yoon Park Hah Young Yoo Advanced institute of Convergence Technology(AiCT) Seoul National UniversitySuwon 16229Republic of Korea Department of Biotechnology Sangmyung University20 Hongjimun 2-GilJongno-GuSeoul 03016Republic of Korea Department of Bio-Convergence Engineering Dongyang Mirae University445-8Gyeongin-roGuro-guSeoul 08221Republic of Korea Fermentation team Lotte R&D Center210 Magokjungang-RoGangseo-GuSeoul 07594Republic of Korea School of Electronic Engineering Kyonggi UniversityGyeonggi-do 16227Republic of Korea

Microalgae are one of the promising feedstocks for biorefinery,contributing significantly to net-zero emissions through carbon capture and ***,the disposal of microalgal byproducts from the manufacturing process causes additional environmental pollution,thus,a new application strategy is *** this study,the Tetraselmis suecica byproduct from the carotenoid extraction process was carbonized and converted into *** converted biochar was proved to be nitrogen-doped biochar(NDB),up to 4.69%,with a specific surface area of 206.59m^(2)/g andwas used as an electrode for a *** NDB electrode(NDB-E)in half-cell showed a maximum specific capacitance of 191 F/*** a full-cell test,the NDB-E exhibited a high energy density of 7.396 Wh/kg and a high-power density of 18,100 W/kg,and maintained specific capacity of 95.5%after charge and discharge of 10,000 *** conclusion,our study demonstrated that the carotenoid-extracted microalgal byproducts are a useful resource for the supercapacitor *** approach is the first to convert *** into active materials for supercapacitors.

关键词： Microalgae Tetraselmis suecica Carbonization N-doped biochar Supercapacitor

RGB Color-Discriminable Photonic Synapse for Neuromorphic Vision System

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第4期17卷 39-62页

作者： Bum Ho Jeong Jaewon lee Miju ku Jongmin lee Dohyung kim Seokhyun Ham kyu-Tae lee Young-Beom kim Hui Joon Park Department of Organic and Nano Engineering&Human-Tech Convergence Program Hanyang UniversitySeoul 04763Korea Department of Semiconductor Engineering Hanyang UniversitySeoul 04763Korea Department of Mechanical Engineering Hanyang UniversitySeoul 04763Korea Department of Physics Inha UniversityIncheon 22212Korea

To emulate the functionality of the human retina and achieve a neuromorphic visual system,the development of a photonic synapse capable of multispectral color discrimination is of paramount ***,attaining robust color discrimination across a wide intensity range,even irrespective of medium limitations in the channel layer,poses a significant ***,we propose an approach that can bestow the color-discriminating synaptic functionality upon a three-terminal transistor flash memory even with enhanced discriminating *** incorporating the strong induced dipole moment effect at the excitation,modulated by the wavelength of the incident light,into the floating gate,we achieve outstanding RGB color-discriminating synaptic functionality within a remarkable intensity range spanning from 0.05 to 40 mW cm^(-2).This approach is not restricted to a specific medium in the channel layer,thereby enhancing its *** effectiveness of this color-discriminating synaptic functionality is demonstrated through visual pre-processing of a photonic synapse array,involving the differentiation of RGB channels and the enhancement of image contrast with noise ***,a convolutional neural network can achieve an impressive inference accuracy of over 94%for Canadian-institute-For-Advanced-Research-10 colorful image recognition task after the *** proposed approach offers a promising solution for achieving robust and versatile RGB color discrimination in photonic synapses,enabling significant advancements in artificial visual systems.

关键词： Organic field-effect transistor Photonic synapse Excited-state dipole moment RGB color discrimination Neuromorphic visual system

Upcycling of monomers derived from waste polyester plastics via electrocatalysis

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第2期101卷 535-561页

作者： Haoye Wang Richard lee Smith Jr Xinhua Qi College of Environmental Science and Engineering Nankai University Graduate School of Environmental Studies Tohoku University

Electrocatalysis offers efficient and targeted conversion of monomers derived from waste polyester plastics to chemical products under ambient temperature and pressure *** review provides analysis of research on electrochemical upgrading of monomers derived from waste polyester plastics published from2021 to *** for assessing upgrading of waste polyester plastics include alkaline hydrolysis pretreatment,indices of electrochemical reaction process(activity,stability,and techno-economic a nalysis),separation,and product *** of depolymerization monomers and their value-added products are summarized along with electrocatalytic mechanisms and reaction ***,cathode coupled reactions offer significant value for anodic waste plastic oxidation during electrolysis *** of bifunctional electrocatalysts can reduce the cost of coupled systems and complexity of the *** and recycling of waste plastic monomers using electrocatalytic technology should undergo downstream processing to form high-value products containing C-N and C-S derived functional groups obtained from depolymerized monomers,Electrochemical conversion and upgrading of monomers derived from waste polyester plastics can contribute to industrialization and global economies and help to realize environmental sustainability.

关键词： Coupling reaction Electrocatalysis Monomer Upgrade recycling Value-added products Waste plastics

A Multifunctional Hydrogel with Multimodal Self-Powered Sensing Capability and Stable Direct Current Output for Outdoor Plant Monitoring Systems

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第4期17卷 1-24页

作者： Xinge Guo Luwei Wang Zhenyang Jin Chengkuo lee Department of Electrical&Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117576Singapore Center for intelligent Sensors and MEMS(CiSM) National University of Singapore5 Engineering Drive 1Singapore 117608Singapore NUS Graduate School-integrative Sciences and Engineering Program(iSEP) National University of SingaporeSingapore 119077Singapore Research Center for Sustainable Urban Farming(SUrF) National University of SingaporeSingapore 117558Singapore

Smart farming with outdoor monitoring systems is critical to address food shortages and sustainability *** systems facilitate informed decisions that enhance efficiency in broader environmental *** outdoor systems equipped with energy harvesters and self-powered sensors often struggle with fluctuating energy sources,low durability under harsh conditions,non-transparent or non-biocompatible materials,and complex ***,a multifunctional hydrogel is developed,which can fulfill all the above requirements and build selfsustainable outdoor monitoring systems solely by *** can serve as a stable energy harvester that continuously generates direct current output with an average power density of 1.9 W m^(-3)for nearly 60 days of operation in normal environments(24℃,60%RH),with an energy density of around 1.36×10^(7)J m^(-3).it also shows good self-recoverability in severe environments(45℃,30%RH)in nearly 40 days of continuous ***,this hydrogel enables noninvasive and self-powered monitoring of leaf relative water content,providing critical data on evaluating plant health,previously obtainable only through invasive or high-power consumption *** potential extends to acting as other self-powered environmental *** multifunctional hydrogel enables self-sustainable outdoor systems with scalable and low-cost production,paving the way for future agriculture.

关键词： Self-powered sensor Hydrogel Energy harvester Outdoor farming Self-sustainable ioT

Rare earth elements:Sector allocations and supply chain considerations

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2025年第1期43卷 1-8,I0001页

作者： Mpila Makiesse Nkiawete Randy lee Vander Wal The EMS Energy institute and the John and Willie Leone Family Department of Energy and Mineral Engineering The Pennsylvania State UniversityParkPA16802USA

This article addresses the question of how the global and *** sector allocations for rare earth elements ***,this article reports rare earth oxide(REO)market sector allocations,resolved by elemental profile for 2020 and reciprocally REO consumption resolved by end market *** are calculated relative to 2008 and presented as percentages and as absolute *** differences encompass both changes in relative sector demand and growth *** trends,global and *** REO usage by sector are calculated for the period of *** market sector demands,as percentages are presented,referenced to United States Geological Survey(USGS)values from *** is given to permanent magnets and associated elements given the growing renewable generation and vehicle *** criticality of Nd and Dy are considered given that they are the foundation of NdFeB permanent magnets,prominent in electric vehicle traction motors and direct drive wind turbine *** activity associated with REE market sectors is *** usage does not reflect economic value.A prime example are catalysts versus ***,vast reserves of light and heavy REEs exist in coal and coal-byproducts with potential high impact upon critical REEs and associated economics.

关键词： Rareearth elements Marketsectors Permanentmagnets Global sources Coal sources

Cellulose Elementary Fibrils as Deagglomerated Binder for High-Mass-Loading Lithium Battery Electrodes

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第5期17卷 281-296页

作者： Young-kuk Hong Jung-Hui kim Nag-Young kim kyeong-Seok Oh Hong-i kim Seokhyeon Ryu Yumi ko Ji-Young kim kwon-Hyung lee Sang-Young lee Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-RoSeodaemun-GuSeoul 03722Republic of Korea Advanced Analysis and Data Center Korea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Ulsan Advanced Energy Technology R&D Center Korea Institute of Energy Research(KIER)Ulsan 44776Republic of Korea Department of Battery Engineering Yonsei University50 Yonsei-RoSeodaemun-GuSeoul 03722Republic of Korea

Amidst the ever-growing interest in high-mass-loading Li battery electrodes,a persistent challenge has been the insufficient continuity of their ion/electron conduction ***,we propose cellulose elementary fibrils(CEFs)as a class of deagglomerated binder for high-mass-loading *** from natural wood,CEF represents the most fundamental unit of cellulose with nanoscale *** preparation of the CEFs involves the modulation of intermolecular hydrogen bonding by the treatment with a proton acceptor and a hydrotropic *** elementary deagglomeration of the cellulose fibers increases surface area and anionic charge density,thus promoting uniform dispersion with carbon conductive additives and suppressing interfacial side reactions at ***,a homogeneous redox reaction is achieved throughout the *** resulting CEF-based cathode(overlithiated layered oxide(OLO)is chosen as a benchmark electrode active material)exhibits a high areal-mass-loading(50 mg cm^(-2),equivalent to an areal capacity of 12.5 mAh cm^(-2))and a high specific energy density(445.4 Wh kg–1)of a cell,which far exceeds those of previously reported OLO *** study highlights the viability of the deagglomerated binder in enabling sustainable high-mass-loading electrodes that are difficult to achieve with conventional synthetic polymer binders.

关键词： Cellulose elementary fibrils Deagglomeration Electrode binders Lithium batteries High-mass-loading

Exploring the mechanistic role of epidermal growth factor receptor activation in non-cancer kidney disease

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

BiOCELL 2025年第1期49卷 79-92页

作者： JU-YEON lee DAEUN MOON JiNU kiM Medical Course College of MedicineCatholic Kwandong UniversityGangneung25601Republic of Kore Department of Anatomy College of MedicineJeju National UniversityJeju63243Republic of Korea interdisciplinary Graduate Program in Advanced Convergence Technology&Science Jeju National UniversityJeju63243Republic of Korea

The epidermal growth factor receptor(EGFR)is a transmembrane glycoprotein that plays a crucial role in signal transduction and cellular *** review explores the function of EGFR in kidney physiology and its implications for various kidney *** signaling is essential for kidney function and repair mechanisms,and its dysregulation significantly impacts both acute and chronic kidney *** review discusses the normal distribution of EGFR in kidney tubular segments,the mechanism of its activation and inhibition,and the therapeutic potential of EGFR-targeting antagonists and ***,it explores the pathophysiological characteristics observed in rodent models of kidney diseases through pharmacological and genetic inhibition of EGFR,highlighting therapeutic challenges and limitations such as species differences,variability in disease models,and potential adverse ***,the findings underscore the multifaceted role of EGFR in kidney diseases,influencing inflammation,fibrosis,and tissue *** complex involvement suggests that targeting EGFR may be a beneficial therapeutic strategy for managing these conditions,potentially mitigating inflammation and fibrosis while promoting tissue repair.

关键词： Epidermal growth factor receptor Chronic kidney disease Acute kidney injury Tubulointerstitial fibrosis