检索结果-南通市图书馆

Machine learning-guided accelerated discovery of structure-property correlations in lean magnesium alloys for biomedical applications

引用

Journal of Magnesium and Alloys 2024年第6期12卷 2267-2283页

作者： sreenivas Raguraman Maitreyee sharma priyadarshini Tram nguyen Ryan McGovern Andrew Kim Adam J.Griebel paulette Clancy Timothy p.Weihs Department of Materials science and Engineering Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A Hopkins Extreme Materials Institute Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A Department of Chemical and Biomolecular Engineering Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A Translational Tissue Engineering Center Johns Hopkins School of Medicine400 N BroadwayBaltimore21231MDU.S.A Department of Biomedical Engineering Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A Research and Development Fort Wayne Metals Research ProductsLLC9609 Ardmore AveFort Wayne46809INU.S.A Department of Mechanical Engineering Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A

Magnesium alloys are emerging as promising alternatives to traditional orthopedic implant materials thanks to their biodegradability,biocompatibility,and impressive mechanical ***,their rapid in-vivo degradation presents challenges,notably in upholding mechanical integrity over *** study investigates the impact of high-temperature thermal processing on the mechanical and degradation attributes of a lean Mg-Zn-Ca-Mn alloy,*** rapid,cost-efficient characterization methods like X-ray diffraction and optical microscopy,we swiftly examine microstructural changes post-thermal *** pearson correlation coefficient analysis,we unveil the relationship between microstructural properties and critical targets(properties):hardness and corrosion ***,leveraging the least absolute shrinkage and selection operator(LAssO),we pinpoint the dominant microstructural factors among closely correlated *** findings underscore the significant role of grain size refinement in strengthening and the predominance of the ternary Ca_(2)Mg_(6)Zn_(3)phase in corrosion *** suggests that achieving an optimal blend of strength and corrosion resistance is attainable through fine grains and reduced concentration of ternary *** thorough investigation furnishes valuable insights into the intricate interplay of processing,structure,and properties in magnesium alloys,thereby advancing the development of superior biodegradable implant materials.

关键词： Magnesium alloys Machine learning Corrosion Mechanical properties Rapid characterization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reconfigurable(4, 6^(2)) and(4, 8^(2)) Archimedean plasma photonic crystals in dielectric barrier discharge

引用

plasma science and Technology 2024年第6期26卷 70-78页

作者：李蕊王启晗刘富成高匡雅侯笑含贾萌萌李庆范伟丽 college of physics science and Technology Hebei UniversityBaoding 071002People’s Republic of China Institute of Electrostatic Technology Hebei UniversityBaoding 071002People’s Republic of China

Archimedean photonic crystal has become a research area of great interest due to its various unique properties. Here, we experimentally demonstrate the realization of reconfigurable(4, 6^(2))and(4, 8^(2)) Archimedean plasma photonic crystals(AppCs) by use of dielectric barrier discharges in air. Dynamical control on both the macrostructures including the lattice symmetry and the crystal orientation, and the microstructures including the fine structures of scattering elements has been achieved. The formation mechanisms of AppCs are studied by time-resolved measurements together with numerical simulations. Large omnidirectional band gaps of AppCs have been obtained. The tunable topology of AppCs may offer new opportunities for fabricating multi-functional and highly-integrated microwave devices.

关键词： Archimedean lattice plasma photonic crystals dielectric barrier discharge

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

next‑Generation Green Hydrogen: progress and perspective from Electricity, Catalyst to Electrolyte in Electrocatalytic Water splitting

引用

nano-Micro Letters 2024年第11期16卷 274-322页

作者： Xueqing Gao Yutong Chen Yujun Wang Luyao Zhao Xingyuan Zhao Juan Du Haixia Wu Aibing Chen college of Chemical and pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang 050018People’s Republic of China

Green hydrogen from electrolysis of water has attracted widespread attention as a renewable power *** several hydrogen production methods,it has become the most promising ***,there is no large-scale renewable hydrogen production system currently that can compete with conventional fossil fuel hydrogen *** energy electrocatalytic water splitting is an ideal production technology with environmental cleanliness protection and good hydrogen purity,which meet the requirements of future *** review summarizes and introduces the current status of hydrogen production by water splitting from three aspects:electricity,catalyst and *** particular,the present situation and the latest progress of the key sources of power,catalytic materials and electrolyzers for electrocatalytic water splitting are ***,the problems of hydrogen generation from electrolytic water splitting and directions of next-generation green hydrogen in the future are discussed and *** is expected that this review will have an important impact on the field of hydrogen production from water.

关键词： Hydrogen Electrolysis Hydrogen production Renewable energy Catalyst

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enhanced degradation of tetracycline by gas-liquid discharge plasma coupled with g-C_(3)n_(4)/TiO_(2)

引用

plasma science and Technology 2024年第9期26卷 69-78页

作者： Zhenhai WAnG Zikai ZHOu sen WAnG Zhi FAnG college of Electrical Engineering and Control science Nanjing Tech UniversityNanjing 211816People’s Republic of China

plasma-catalysis is considered as one of the most promising technologies for antibiotic degradation in *** the plasma-catalytic system,one of the factors affecting the degradation effect is the performance of the photocatalyst,which is usually restricted by the rapid recombination of electrons and holes as well as narrow light absorption *** this research,a photocatalyst g-C_(3)n_(4)/TiO_(2) was prepared and coupled with gas-liquid discharge(GLD)to degrade tetracycline(TC).The performance was examined,and the degradation pathways and mechanisms were *** show that a 90%degradation rate is achieved in the GLD with g-C_(3)n_(4)/TiO_(2) over a 10 min *** the pulse voltage is conducive to increasing the degradation rate,whereas the addition of excessive g-C_(3)n_(4)/TiO_(2) tends to precipitate agglomerates,resulting in a poor degradation *** redox properties of the g-C_(3)n_(4)/TiO_(2) surface promote the generation of oxidizing active species(H2O2,O3)in *** quenching experiments showed that·OH,hole(h^(+)),play important roles in the TC degradation by the discharge with g-C_(3)n_(4)/TiO_(2).Two potential degradation pathways were proposed based on the *** toxicity of tetracycline was reduced by treatment in the ***,the g-C_(3)n_(4)/TiO_(2) composites exhibited excellent recoverability and stability.

关键词： gas-liquid discharge plasma-catalysis g-C_(3)n_(4)/TiO_(2) TC degradation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multi-layer phenomena in petawatt laser-driven acceleration of heavy ions

引用

plasma science and Technology 2024年第2期26卷 70-76页

作者：苏琬晴曹喜光马春旺王玉廷张国强 college of physics Henan Normal UniversityXinxiang 453007People's Republic of China shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210People's Republic of China shanghai Institute of Applied physics Chinese Academy of SciencesShanghai 201800People's Republic of China university of Chinese Academy of sciences Bejing 100049People's Republic of China Institute of nuclear science and Technology Henan Academy of ScienceZhengzhou 450046People's Republic of China

Laser-accelerated high-flux-intensity heavy-ion beams are important for new types of accelerators.A particle-in-cell program(smilei) is employed to simulate the entire process of station of Extreme Light(sEL) 100 pW laser-accelerated heavy particles using different nanoscale short targets with a thickness of 100 nm Cr, Fe, Ag, Ta, Au, pb, Th and u, as well as 200 nm thick Al and Ca. An obvious stratification is observed in the simulation. The layering phenomenon is a hybrid acceleration mechanism reflecting target normal sheath acceleration and radiation pressure acceleration, and this phenomenon is understood from the simulated energy spectrum,ionization and spatial electric field distribution. According to the stratification, it is suggested that high-quality heavy-ion beams could be expected for fusion reactions to synthesize superheavy nuclei. Two plasma clusters in the stratification are observed simultaneously, which suggest new techniques for plasma experiments as well as thinner metal targets in the precision machining process.

关键词： petawatt laser-plasma interaction laser-driven heavy-ion accelerator for synthesizing superheavy nuclei particle-in-cell multi-layer phenomena target fabrication

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multifunctional Film Assembled from n‑Doped Carbon nanofiber with Co–n_(4)–O single Atoms for Highly Efficient Electromagnetic Energy Attenuation

引用

nano-Micro Letters 2024年第11期16卷 359-376页

作者： Jia Xu Bei Li Zheng Ma Xiao Zhang Chunling Zhu Feng Yan piaoping Yang Yujin Chen college of Materials science and Chemical Engineering Harbin Engineering UniversityHarbin 150001People’s Republic of China Key Laboratory of In‑Fiber Integrated Optics College of Physics and Optoelectronic EngineeringHarbin Engineering UniversityHarbin 150001People’s Republic of China

single-atom materials have demonstrated attractive physicochemical ***,understanding the relationships between the coordination environment of single atoms and their properties at the atomic level remains a considerable ***,a facile waterassisted carbonization approach is developed to fabricate well-defined asymmetrically coordinated Co–n_(4)–O sites on biomass-derived carbon nanofiber(Co–n_(4)–O/nCF)for electromagnetic wave(EMW)*** such nanofiber,one atomically dispersed Co site is coordinated with four n atoms in the graphene basal plane and one oxygen atom in the axial ***-depth experimental and theoretical studies reveal that the axial Co–O coordination breaks the charge distribution symmetry in the planar porphyrin-like Co–n_(4) structure,leading to significantly enhanced dielectric polarization loss relevant to the planar Co–n_(4) ***,the film based on Co–n_(4)–O/nCF exhibits light weight,flexibility,excellent mechanical properties,great thermal insulating feature,and excellent EMW absorption with a reflection loss of−45.82 dB along with an effective absorption bandwidth of 4.8 *** findings of this work offer insight into the relationships between the single-atom coordination environment and the dielectric performance,and the proposed strategy can be extended toward the engineering of asymmetrically coordinated single atoms for various applications.

关键词： Co single atoms Asymmetric coordination structure Axial oxygen coordination Electromagnetic wave absorption Multifunctional film

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Electrocatalytic performance of Carbon Layer and spherical Carbon/Carbon Cloth Composites Towards Hydrogen Evolution from the Direct Electrolysis of Bunsen Reaction product

引用

Chemical Research in Chinese universities 2024年第1期40卷 109-118页

作者： ZHAnG Wanjia GuO Tingyu LIu Yanhua ZHAnG Xuewei ZOu Bo ZHAO Chun suO Hui WAnG Hui ZHAO Xu college of Chemistry Jilin UniversityChangchun130012P.R.China state Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun130012P.R.China Department of Chemical and Biological Engineering University of SaskatchewanSaskatoonSKS7N 5A9Canada

A composite material comprising a carbon layer and spherical carbon/carbon cloth(C-sC/CC)was fabricated using a hydrothermal-pyrolysis method,employing carbon cloth as the substrate and glucose as the carbon *** C-sC/CC electrode was evaluated as an electrocatalytic electrode for hydrogen production by electrolysis of Bunsen reaction *** electrode prepared with 4 g of glucose and annealed at 800°C showed excellent electrocatalytic *** requires only a potential of 185 mV(***)to achieve a current density of 10 mA/***,the electrode demonstrated good stability with a 6%loss in current density after 1000 cycles of scanning from 0.2 V to 1.2 *** results indicate the potential of the sC/CC electrode as an efficient and durable electrocatalyst for the electrolysis of H2sO4 and HI.

关键词： Electrolysis of Bunsen reaction product Carbon material Composite material Hydrogen production

来源：

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

Estimating the grain size of microgranular material using laser-induced breakdown spectroscopy combined with machine learning algorithms

引用

plasma science and Technology 2024年第5期26卷 129-137页

作者：张朝李亚举杨光辉曾强李小龙陈良文钱东斌孙对兄苏茂根杨磊张少锋马新文 Key Laboratory of Atomic and Molecular physics and Functional Materials of Gansu province College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070People’s Republic of China Advanced Energy science and Technology Guangdong LaboratoryHuizhou 516000People’s Republic of China Institute of Modern physics Chinese Academy of SciencesLanzhou 730000People’s Republic of China university of the Chinese Academy of sciences Beijing 100049People’s Republic of China school of nuclear science and Technology University of the Chinese Academy of SciencesBeijing 100049People’s Republic of China

Recent work has validated a new method for estimating the grain size of microgranular materials in the range of tens to hundreds of micrometers using laser-induced breakdown spectroscopy(LIBs).In this situation,a piecewise univariate model must be constructed to estimate grain size due to the complex dependence of the plasma formation environment on grain *** the present work,we tentatively construct a unified calibration model suitable for LIBs-based estimation of those grain ***,two unified multivariate calibration models are constructed based on back-propagation neural network(Bpnn)algorithms using feature selection strategies with and without considering prior *** detailed analysis of the performances of the two multivariate models,it was found that a unified calibration model can be successfully constructed based on Bpnn algorithms for estimating the grain size in the range of tens to hundreds of *** was also found that the model constructed with a priorguided feature selection strategy had better prediction *** study has practical significance in developing the technology for material analysis using LIBs,especially when the LIBs signal exhibits a complex dependence on the material parameter to be estimated.

关键词： laser-induced breakdown spectroscopy machine learning randomly packed microgranular materials

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Wavelength calibration and spectral analysis of vacuum ultraviolet spectroscopy in EAsT

引用

plasma science and Technology 2024年第8期26卷 37-43页

作者：计华健张洪明吕波 Cheonho BAE 何梁林子超尹相辉沈永才戴舒宇 Institute of plasma physics Chinese Academy of SciencesHefei 230031People’s Republic of China science Island Branch Graduate SchoolUniversity of Science and Technology of ChinaHefei 230031People’s Republic of China college of Electrical Engineering University of South ChinaHengyang 421001People’s Republic of China school of physics and Materials Engineering Hefei Normal UniversityHefei 230601People’s Republic of China school of physics Dalian University of TechnologyDalian 116024People’s Republic of China

A vacuum ultraviolet(VuV)spectroscopy with a focal length of 1 m has been engineered specifically for observing edge impurity emissions in Experimental Advanced superconducting Tokamak(EAsT).In this study,wavelength calibration for the VuV spectroscopy is achieved utilizing a zinc *** grating angle and charge-coupled device(CCD)position are carefully calibrated for different wavelength *** wavelength calibration of the VuV spectroscopy is crucial for improving the accuracy of impurity spectral data,and is required to identify more impurity spectral lines for impurity transport *** spectra of EAsT plasmas have also been obtained in the wavelength range of 50–300 nm with relatively high spectral *** is found that the impurity emissions in the edge region are still dominated by low-Z impurities,such as carbon,oxygen,and nitrogen,albeit with the application of fulltungsten divertors on the EAsT tokamak.

关键词： vacuum ultraviolet spectroscopy wavelength calibration impurity spectra

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Advances of embedded resistive random access memory in industrial manufacturing and its potential applications

引用

International Journal of Extreme Manufacturing 2024年第3期6卷 175-214页

作者： Zijian Wang Yixian song Guobin Zhang Qi Luo Kai Xu Dawei Gao Bin Yu Desmond Loke shuai Zhong Yishu Zhang college of Integrated Circuits Zhejiang UniversityHangzhouZhejiang 3112000People’s Republic of China ZJu-Hangzhou Global scientific and Technological Innovation Center Hangzhou 310027People’s Republic of China Department of science Mathematics and TechnologySingapore University of Technology and DesignSingapore 487372Singapore Guangdong Institute of Intelligence science and Technology HengqinZhuhai 519031People’s Republic of China

Embedded memory,which heavily relies on the manufacturing process,has been widely adopted in various industrial *** the field of embedded memory continues to evolve,innovative strategies are emerging to enhance *** them,resistive random access memory(RRAM)has gained significant attention due to its numerousadvantages over traditional memory devices,including high speed(ns),high density(4 F^(2)·n^(-1)),high scalability(~nm),and low power consumption(~pJ).This review focuses on the recent progress of embedded RRAM in industrial manufacturing and its *** provides a brief introduction to the concepts and advantages of RRAM,discusses the key factors that impact its industrial manufacturing,and presents the commercial progress driven by cutting-edge nanotechnology,which has been pursued by manysemiconductor ***,it highlights the adoption of embedded RRAM in emerging applications within the realm of the Internet of Things and future intelligent computing,with a particular emphasis on its role in neuromorphic ***,the review discusses thecurrent challenges and provides insights into the prospects of embedded RRAM in the era of big data and artificial intelligence.

关键词： embedded resistive random access memory industrial manufacturing intelligent computing advanced process node

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：