检索结果-南通市图书馆

Recent Advances in Electrochemical-Based Silicon Production Technologies with Reduced Carbon Emission

Research 2024年第1期2023卷 209-236页

作者： Feng Tian Zhongya Pang Shen Hu Xueqiang Zhang fei Wang Wei nie Xuewen Xia Guangshi Li Hsien-Yi Hsu Qian Xu Xingli Zou Li Ji Xionggang Lu State Key Laboratory of Advanced Special Steel&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of Materials Science and Engineering Shanghai University99#Shangda RoadShanghai 200444China Center for Hydrogen Metallurgy Technology Shanghai UniversityShanghai 200444China State Key Laboratory of ASIC and System School of MicroelectronicsFudan University220#Handan RoadShanghai 200433China School of Energy and Environment Department of Materials Science and EngineeringCity University of Hong KongKowloon TongHong KongChina

Sustainable and low-carbon-emission silicon production is currently one of the main focuses for the metallurgical and materials science communities.Electrochemistry,considered a promising strategy,has been explored to produce silicon due to prominent advantages:(a)high electricity utilization efficiency;(b)low-cost silica as a raw material;and(c)tunable morphologies and structures,including films,nanowires,and nanotubes.This review begins with a summary of early research on the extraction of silicon by electrochemistry.Emphasis has been placed on the electro-deoxidation and dissolution–electrodeposition of silica in chloride molten salts since the 21st century,including the basic reaction mechanisms,the fabrication of photoactive Si films for solar cells,the design and production of nanoSi and various silicon components for energy conversion,as well as storage applications.Besides,the feasibility of silicon electrodeposition in room-temperature ionic liquids and its unique opportunities are evaluated.On this basis,the challenges and future research directions for silicon electrochemical production strategies are proposed and discussed,which are essential to achieve large-scale sustainable production of silicon by electrochemistry.

关键词： directions electrodeposition electricity

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

Brightening room-temperature phosphorescence in solution

引用

Science China Chemistry 2023年第3期66卷 611-612页

作者： fei nie Dongpeng Yan Beijing Key Laboratory of Energy Conversion and Storage Materials Key Laboratory of RadiopharmaceuticalsMinistry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China

The strategies including noncovalent macrocycle-confined supramolecular assembly and construction of rigid hydrogen-bond network have been verified as effective routes to brighten aqueous-phase room temperature phosphorescence.Molecule-based room-temperature phosphorescence(RTP)has attracted widespread attention in the fields of chemical sensors,optical anti-counterfeiting,information encoding and so on,due to unique characteristics of long excited-state lifetimes,large Stokes shifts and high signal-tonoise ratios[1,2].Currently,to obtain RTP with considerable efficiency and long lifetime,two brilliant strategies have been developed:one is the introduction of heavy atoms,which facilitates the spin-orbital coupling and intersystem crossing(ISC)from singlet to triplet states。

关键词： lifetime excited coupling

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

Impact of Outward Foreign Direct Investment on Chinese Manufacturing Firms'Financialization and Servitization

引用

China & World Economy 2023年第2期31卷 112-136页

作者： fei nie Jian Li Xiaoli Etienne Gucheng Li College of Economics and Management Huazhong Agricultural UniversityChina College of Agricultural and Life Sciences University of IdahoUS

This study examines the impact of outward foreign direct investment(OFDI)on Chinese manufacturing firms'financialization and servitization.Using a difference-in-differences approach with propensity score matching,we found that OFDI encouraged firms'financial and service activities.The effects of OFDI on financialization were stronger for firms specializing in short-term financial assets,operating in labor and technology-intensive sectors,investing overseas to pursue production,resources and markets there,and investing in non-OECD and Belt and Road Initiative(BRI)countries.Meanwhile,firms investing overseas were more likely to provide services at the sale or postsale stages.Outward foreign direct investment has also boosted the service activities of firms operating in the technology-intensive sector by investing overseas to seek resources and markets,as well as investing in non-OECD and BRI countries.Finally,OFDI partially influenced the extent of financialization and servitization of firms by affecting their profit-making ability.

关键词： financialization manufacturing firms OFDI PSM-DID servitization

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

读睡虎地书信木牍札记三则

引用

出土文献 2024年第1期 56-62,171页

作者：聂菲复旦大学出土文献与古文字研究中心 “古文字与中华文明传承发展工程”协同攻关创新平台

本文是有关睡虎地书信木牍字词释读的三则短札。第一则认为“寄气(乞)就书”应理解为“寄给就的书信”,“寄乞”与“寄遗”“乞匃”相类。第二则指出“自以布此”是“自以布为襌裙、襦于此”的省略。第三则指出“直佐”与“直符”“直... 详细信息

本文是有关睡虎地书信木牍字词释读的三则短札。第一则认为“寄气(乞)就书”应理解为“寄给就的书信”,“寄乞”与“寄遗”“乞匃”相类。第二则指出“自以布此”是“自以布为襌裙、襦于此”的省略。第三则指出“直佐”与“直符”“直候”“直更”结构相似,并在此基础上讨论了《晏子春秋》“直使”、《战国策》“直送”的语义。

关键词：睡虎地木牍寄乞就书自以布此直使

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

Cassiterite U-Pb age in the Bawapin tin deposit, Tanintharyi Region, southern Myanmar

引用

China Geology 2023年第2期6卷 358-360,I0046页

作者： Song-yang Wu Shu-sheng Liu Yong-fei Yang Bin Zhang Hui-min Liang Hong Zhang Xiang-ting Zeng fei nie Chengdu Center China Geological SurveyChengdu 610081China Applied Geological Survey Center China Geological SurveyChengdu 610036China

1.Objective Southeast Asia has a 3500 km tin metallogenic belt in the world,extending from southern Yunnan Province to Bangka,Indonesia.This region is also the world’s largest one regarding tin production,which accounts for 85%of historical tin production globally(Lehmann B,2021).Myanmar is one of the main tin producers within this region(33000 t in 2020)and has become the key supplier after China and Indonesia.Research on tin mineralization in Myanmar mostly focused on ore-related granites,for zircon geochronology,magma evolution,and tectonic settings(Mao W et al.,2020).

关键词： Myanmar mostly globally

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

Mn-doping induced electronic modulation and rich oxygen vacancies on vertically grown NiFe2O4 nanosheet array for synergistically triggering oxygen evolution reaction

引用

Nano Research 2022年第5期15卷 3940-3945页

作者： Yonghao Gan Meilin Cui Xiaoping Dai Ying Ye fei nie Ziteng Ren Xueli Yin Baoqiang Wu Yihua Cao Run Cai Xin Zhang State Key Laboratory of Heavy Oil Processing College of Chemical Engineering and EnvironmentChina University of PetroleumBeijing 102249China

Large-scale electrolysis of water to produce high-purity hydrogen is one of the effective ways to solve the energy crisis and environmental pollution problems.However,efficient,cheap and stable catalysts are one of the bottlenecks for industrial application in water splitting.Herein,a facile one-step hydrothermal process was applied to fabricate Mn-doped nickel ferrite nanosheets(Mn-NiFe_(2)O_(4))which shown a low overpotential of 200 mV at 50 mA·cm^(-2)and a small Tafel slope of 47 mV·dec^(-1),together with a prominent turnover frequency(TOF)value(0.14 s^(-1))and robust stability.The in-situ UV-vis spectroscopy unveiled the surface reconstruction to generate NiOOH as active sites during oxygen evolution reaction(OER).The excellent electrocatalytic activity of Mn-NiFe_(2)O_(4)is attributed to the vertically grown nanosheets for exposure more active sites,rich oxygen vacancies,and the hybridization between Ni 3d and O 2p orbitals caused by Mn doping.This work should provide a facile strategy by Mn-doping to simultaneously engineer oxygen vacancies and electronic structure for synergistically triggering oxygen evolution reaction.

关键词： Mn doping NiFe_(2)O_(4)nanosheets oxygen vacancies electronic modulation oxygen evolution reaction

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

以景观感知为中介的生态美学践行途径:目标体系与营造策略

引用

中国园林 2024年第4期40卷 77-81页

作者：费凡岳邦瑞聂静延安大学鲁迅艺术学院延安716000 西安建筑科技大学建筑学院西安710055 西安建筑科技大学艺术学院西安710055

生态美学是一门面向生态危机、致力审美体验与环境健康共赢的规范性学说,对生态文明建设具有重要现实意义。如何借由景观感知研究助推生态美学观的传播,引导公众审美意识转向自然关怀与伦理正义,是风景园林学科关注的重点问题。基于此,... 详细信息

生态美学是一门面向生态危机、致力审美体验与环境健康共赢的规范性学说,对生态文明建设具有重要现实意义。如何借由景观感知研究助推生态美学观的传播,引导公众审美意识转向自然关怀与伦理正义,是风景园林学科关注的重点问题。基于此,旨在借由理论综述与案例分析探讨以景观感知为中介的生态美学践行途径。具体包括:(1)在概念框架层面,讨论了景观感知、生态美学观及风景园林实践的关系;(2)在价值规范层面,构建了践行生态美学的目标体系,包含“安全氛围的暗示”“关怀意图的显露”“地方文脉的反映”“生态规律的阐释”及“生态伦理的激发”5个关键维度;(3)在实践应用层面,凝练了围绕目标体系的一系列风景园林营造策略。通过系统认识美学规范与景观实践间的作用关系,以期为基于人本感知的、面向当代美学诉求的风景园林研究提供有益参考。

关键词：风景园林生态美学景观感知目标策略

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

Impedance Modeling and Stability Factor Assessment of Grid-connected Converters Based on Linear Active Disturbance Rejection Control

引用

Journal of Modern Power Systems and Clean Energy 2021年第6期9卷 1327-1338页

作者： Hailiang Xu fei nie Zhongxing Wang Shinan Wang Jiabing Hu IEEE College of New Energy China University of Petroleum(East China) college of Electrical and Electronic Engineering Huazhong University of Science and Technology

—With the increase of converter-based renewable energy generation connected into the power grid, the interaction between renewable energy and grid impedance has introduced lots of new issues, among which the sub-and super-synchronous oscillation phenomenon makes a big concern. The linear active disturbance rejection control(LADRC) is a potential way to improve the damping characteristics of the grid-connected system, but the key factors and influencing mechanism on system stability are unknown. This paper establishes the equivalent impedance and coupling admittance models of a typical three-phase grid-connected converter. Then, the influence of the key factors such as the bandwidth of the LADRC and grid impedance on the stability and frequency coupling effect is assessed in detail. Finally, the theoretical analysis results are verified by simulations and experiments.

关键词： Grid-connected converter linear active disturbance rejection control(LADRC) sub-and super-synchronous oscillation stability

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

从个案考证到宏观解读--马王堆一号汉墓漆棺图像与帛画研究述评

引用

文物春秋 2024年第1期 11-19,78页

作者：聂菲湖南博物院湖南长沙410005

马王堆一号汉墓发掘于1972年,出土的漆棺和帛画均保存完好,图像内容极为丰富,一直备受学界关注,取得了十分丰硕的研究成果。以学术史视角来看,50多年来学界对漆棺和帛画的研究可分为发端期(20世纪70年代至80年代)、过渡期(20世纪90年代... 详细信息

马王堆一号汉墓发掘于1972年,出土的漆棺和帛画均保存完好,图像内容极为丰富,一直备受学界关注,取得了十分丰硕的研究成果。以学术史视角来看,50多年来学界对漆棺和帛画的研究可分为发端期(20世纪70年代至80年代)、过渡期(20世纪90年代)和创新期(21世纪以来)三个重要阶段,经历了从个案考证到宏观解读的动态发展过程,尤其是在创新期,国内外众多学者以整体观来审视棺椁、帛画与墓葬空间的内在关联,新的观点不断涌现,研究得到了空前发展。

关键词：马王堆一号汉墓漆棺帛画研究述评

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

螺旋微反应器内传热过程模拟仿真与尺度放大

引用

含能材料 2024年第3期32卷 289-297页

作者：李玉光袁飞赵双飞聂莹莹赵跃何伟郭凯南京先进生物材料与过程装备研究院有限公司江苏南京211299 南京工业大学生物与制药工程学院江苏南京211816

为提升微反应器制备含能材料的热安全性,采用基于有限体积法的计算流体力学模拟仿真方法,对螺旋微反应器内结构参数对流动与传热的影响规律进行了研究。结果表明,在螺旋微通道中,连续流动的流体在离心力的影响下会产生连续的二次流扰动... 详细信息

为提升微反应器制备含能材料的热安全性,采用基于有限体积法的计算流体力学模拟仿真方法,对螺旋微反应器内结构参数对流动与传热的影响规律进行了研究。结果表明,在螺旋微通道中,连续流动的流体在离心力的影响下会产生连续的二次流扰动方向变化,有助于增强流体的传热性能。增大螺旋微反应器的曲率、减小无量纲螺距值和增大流体流速,能够有效提升努塞尔数和控制沿程阻力系数。螺旋微反应器的传热性能存在“放大效应”,当螺旋管管道半径放大到2.5 mm以上时,热阻系数增大,传热性能降低。将螺旋管的管道半径控制在2.5 mm,能够在维持较高传热性能的同时,使换热流体通量增大了25倍,且压降降低了98.9%。

关键词：微反应器强化传热结构参数尺度放大数值模拟

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：