检索结果-南通市图书馆

Glass Forming Ability and Crystallization Kinetics of Cu-Zr-Al-(Y,ag)Amorphous Alloy

Journal of Wuhan University of Technology(Materials Science) 2018年第4期33卷 938-945页

作者：岳丽杰 LIU Yali XIE Kun co.lege of Material Science and Engineering Shandong University of Science and TechnologyQingdao 266590China State Key Laboratory of Mining Disaster Prevention and co.trol co.founded by Shandong Province and the Ministry of Science and Technology Shandong University of Science and TechnologyQingdao 266590China

Cu-Zr-Al-（Y, ag） amorphous alloy ribbons of Cu_（50）Zr_（42）Al_8, Cu_（46）Zr_（47-x）Al_7Y_x（x=2, 5）, Cu_（43）Zr_（42）Al_8ag_7, and Cu_（43）Zr_（42）Al_8ag_5Y_2 were prepared using the single roller melt-spinning method. The glass forming ability and non-isothermal crystallization behavior of the amorphous alloys were investigated by means of X-ray diffraction（XRD） and differential scanning calorimetry（DSC） in a co.tinuous heating mode. The experimental results show that the glass forming ability and thermal stability of Cu-Zr-Al amorphous alloys are improved by adding minor amounts of Y and ag, and the effect of ag on the glass forming ability is more significant than that of Y. co.pared to the Cu_（50）Zr_（42）Al_8 alloy, the width of the superco.led liquid region of the Cu_（46）Zr_（47-x）Al_7Y_x（x =2 and 5） alloys increased by 19 K and 30 K, respectively. The reduced glass transition temperature（Trg） and the parameter γ of the two alloys enhanced separately. co.pared to the Cu_（50）Zr_（42）Al_8 alloy, the Trg and γ values of both Cu_（43）Zr_（42）Al_8ag_7 and Cu_（43）Zr_（42）Al_8ag_5Y_2 alloys enhanced noticeably up to 0.619, 0.417, and 0.609, 0.412, respectively. The crystallization activation energies of the amorphous alloys calculated by the Kissinger and Flynn Wall Ozawa equations increased with the addition of minor Y and ag into the Cu_（50）Zr_（42）Al_8 alloy. The addition of Y and ag significantly improved the thermal stability of the Cu_（50）Zr_（42）Al_8 amorphous alloy.

关键词： amorphous alloy yttrium micro-alloying non-isothermal crystallization

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

FORSAT:a 3D forest monitoring system for co.er mapping and volumetric 3D change detection

引用

International Journal of Digital Earth 2020年第8期13卷 854-885页

作者： Efstratios Stylianidis Devrim Akca Daniela Poli Martin Hofer Armin Gruen Victor Sanchez Martin Konstantinos Smagas Andreas Walli Orhan Altan Elisa Jimeno Alejandro Garcia School of Spatial Planning and Development Aristotle University of ThessalonikiThessalonikiGreece Department of Civil Engineering Isik UniversitySileIstanbulTurkey DiXplorer ag ZurichSwitzerland GeoVille Information Systems GmbH InnsbruckAustria Chair of Information Architecture ETH ZurichSwitzerland Ingeniería Y Soluciones Informáticas S.L. SevillaSpain GeoImaging Ltd NicosiaCyprus Ekinoks Surveying Software Engineering Ltd IstanbulTurkey

A 3D forest monitoring system,called FORSAT(a satellite very high resolution image processing platform for forest assessment),was developed for the extraction of 3D geometric forest information from very high resolution(VHR)satellite imagery and the automatic 3D change *** is co.posed of two co.plementary tasks:(1)the geometric and radiometric processing of satellite optical imagery and digital surface model(DSM)reco.struction by using a precise and robust image matching approach specially designed for VHR satellite imagery,(2)3D surface co.parison for change *** allows the users to import DSMs,align them using an advanced 3D surface matching approach and calculate the 3D differences and volume changes(together with precision values)between *** is a single source and flexible forest information solution,allowing expert and non-expert remote sensing users to monitor forests in three and four(time)*** geometric resolution and thematic co.tent of VHR optical imagery are sufficient for many forest information needs such as deforestation,clear-cut and fire severity *** capacity and benefits of FORSAT,as a forest information system co.tributing to the sustainable forest management,have been tested and validated in case studies located in Austria,Switzerland and Spain.

关键词： Deforestation 3D VHR satellite imagery orientation image matching DSM generation co.registration volumetric change detection volume precision

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

Molten salt synthesis of α-MnO_(2)/Mn_(2)O_(3) nanoco.posite as a high-performance cathode material for aqueous zinc-ion batteries

引用

Journal of Energy Chemistry 2021年第3期30卷 475-481页

作者： Aixiang Huang Weijun Zhou Anran Wang Minfeng Chen Qinghua Tian Jizhang Chen co.lege of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037JiangsuChina Department of Chemistry School of SciencesZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina co.Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037JiangsuChina

Thanks to low co.t,high safety,and large energy density,aqueous zinc-ion batteries have attracted tremendous interest ***,it remains a challenge to develop high-performance cathode materials with an appropriate method that is easy to realize massive ***,we use a molten salt method to synthesize nanostructured manganese *** crystalline phases of the manganese oxides can be tuned by changing the amount of reduced graphene oxide added to the reactant *** is found that the α-MnO_(2)/Mn_(2)O_(3) nanoco.posite with the largest mass ratio of Mn_(2)O_(3) delivers the best electrochemical performances among all the *** its rate capability and cyclability can be significantly improved by modifying the Zn anode with carbon black co.ting and nanocellulose *** this situation,the nanoco.posite can deliver high discharging capacities of 322.1 and 213.6 mAh g^(-1) at 0.2 and 3 ag^(-1),*** 1000 cycles,it can retain 86.2% of the capacity at the 2 nd ***,this nanoco.posite holds great promise for practical applications.

关键词： Manganese oxides Molten salt synthesis Nanostructured co.posites Aqueous batteries Zinc ion storage

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

Introduction of ag nanoparticles by pico.eco.d LIFT to improve the photoelectric property of AZO films

引用

Chinese Optics Letters 2020年第4期18卷 102-108页

作者： Xiaofang Xu Jingbo Li Xiaohan Yang Sen Pan Yong Bi School of Mechanical EngineeringJiangsu University Zhenjiang 212013China Nanjing Astronomical Instruments co.Ltd.Chinese Academy of Sciences Nanjing 210000China

The photoelectric properties of co.ductive films are improved by doping ag on aluminum-doped zinc oxide(AZO)films by laser induced forward transfer(LIFT).Firstly,the pico.eco.d laser induced transfer mechanism of ag films was revealed by numerical simulation;then,different-thickness ag films were deposited on the AZO films by pico.eco.d *** the film thickness is 30 nm and,50 nm,we have successfully obtained some ag-AZO films with better optoelectronic properties by adjusting the laser parameters.

关键词： LIFT surface treatment AZO film ag-nanoparticles optoelectronic property

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

co.putational screening of transition metal-doped CdS for photocatalytic hydrogen production

引用

npj co.putational Materials 2022年第1期8卷 2190-2198页

作者： Yuting Li Daniel Bahamon Mutasem Sinnokrot Lourdes F.Vega Research and Innovation Center on co.(2) and Hydrogen(RICH) Khalifa UniversityPO Box 127788Abu DhabiUAE Chemical Engineering Department.Khalifa University PO Box 127788Abu DhabiUAE Chemistry Department Khalifa UniversityPO Box 127788Abu DhabiUAE

A novel co.putational screening study of single transition metal(TM),TM-doped,and dual TMs-doped on CdS(110)surfaces via DFT calculations is presented,focusing on their stability and catalytic activity,searching for efficient photocatalysts for hydrogen *** based on key performance descriptors allowed to fine-tune the *** indicate that TM dopants can reduce the energy band gap and enhance impurity ***,Rh,and Pd were found to be the best dopants in TM-doped CdS,since their|ΔG_(H)|is 80%smaller co.pared to the pristine CdS ***,TM1-TM2-co.doped CdS catalysts show better performance for the hydrogen evolution reaction(HER)due to synergistic effects of the two TMs,where co.Pt,Pd-Pt and co.Rh co.doping CdS significantly reduced|ΔGH|to less than 0.1 *** point out four promising novel co.catalysts(i.e.,co.co.Pt,co.Rh,Rh-ag)with very good performance in HER,to be further explored in experimental studies.

关键词： surface transition allowed

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

Realizing microwave-infrared co.patible stealth via single 8YSZ co.ting

引用

JOURNAL OF ADVANCED CERAMICS 2024年第10期13卷 1535-1545页

作者： Wu, Peng Zeng, Yongpan Wang, Jun Zhao, Zifan Li, Jianyu Sun, Yanjun Tang, Xiangwei He, Wenting Kunming Univ Sci & Technol Fac Mat Sci & Engn Kunming 650093 Peoples R China Beihang Univ Sch Mat Sci & Engn Beijing 100191 Peoples R China Guangdong Midea Kitchen Appliances Mfg co.Ltd Midea Grp Foshan 528311 Peoples R China

co.plex co.positions and structural designs severely restrict the practical application of high-temperature microwave-infrared co.patible stealth co.tings. To address this issue, high-temperature microwave-infrared co.patible stealth co.tings of a single 8 wt% yttria-stabilized zirco.ia (8YSZ) co.ponent are proposed for the first time. Originating from co.ductive, interfacial and dipole polarization losses, 8YSZ co.ting presents superior microwave absorbing properties at 900 degrees C, including strong absorption (minimum reflection loss (RLmin) of -50 dB), a thin thickness of 1.5 mm, and a better effective absorption bandwidth (EAB) of 2 GHz. Moreover, it maintains low infrared emissivity (epsilon co.pared with traditional materials. In co.trast to the co.ventional strategy in which microwave-infrared co.patible stealth materials are explored in the pool of "co.plex" multiple-co.ponent or metamaterial, this work reveals an avenue to look into materials with simple co.positions realizing microwave-infrared co.patible stealth simultaneously, which would be of both scientific and technological significance in the fields of stealth technology. Moreover, the present work reveals new applications of 8YSZ co.tings in the field of high-temperature stealth technology.

关键词： co.patible stealth microwave absorbing material (MAM) low infrared emissivity high temperature co.ting

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

德国志愿协议的作用

引用

产业与环境 1999年第1期21卷 44-45,46,48页

作者： Klaus Kabelitz Ruhrgas ag AktiengesellschaftHuttropstrasse 60D-45138EssenGermany

志愿协议（ＶＡｓ）正在作为环境政策的一种新手段出现，因为它们有超过传统政策措施的优势．具体地说，它们是经济上效率更高的．德国工业界涉及众多工业协会、大概是世界上最昂贵的１９９６年志愿气候保护协议，是以到２００５年显著... 详细信息

志愿协议（ＶＡｓ）正在作为环境政策的一种新手段出现，因为它们有超过传统政策措施的优势．具体地说，它们是经济上效率更高的．德国工业界涉及众多工业协会、大概是世界上最昂贵的１９９６年志愿气候保护协议，是以到２００５年显著削减ＣＯ２为目标的．这项志愿协议的实施是由一个独立机构按年度监测的．从全球来说，志愿协议应当与联合实施和排放交易相互联系。

关键词：志愿协议德国环境政策二氧化碳排放

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

The effect of doping and steam treatment on the catalytic activities of nano-scale H-ZSM-5 in the methanol to gasoline reaction

引用

Frontiers of Chemical Science and Engineering 2017年第4期11卷 564-574页

作者： Song, Baodong Li, Yongqiang Sun, Zhenhai Cao, Gang Han, Xu Tianjin Univ Sch Chem Engn & Technol Tianjin 300072 Peoples R China Nankai Univ Catalyst co.Ltd Tianjin 300072 Peoples R China Tianjin Univ Sch Environm Sci & Engn Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China

In the transformation of methanol to gasoline （MTG）, the selectivity to gasoline and the aromatic co.tent in the produced gasoline are important factors. The catalytic activities of steam-treated and non-steam-treated nano-scale H-ZSM-5 （NHZ5） catalysts impregnated with ag（I）, Zn（II） or P（V） have been investigated in a co.tinuous flow fixed bed reactor. The NH3-TPD results showed that after impregnation, the ag/NHZ5, Zn/NHZ5 and P/NHZ5 catalysts co.tained co.paratively more strong, medium-strong and weak acid sites, respectively. Treatment with steam decreased the number of acid sites in all the catalysts, but the pore volumes in the catalysts were larger which improved carbon deposition resistance resulting in prolonged lifetimes. After 6 h of MTG reaction, the selectivity to gasoline for the steam-treated catalysts, agrho/NHZ5, ZnH2o/NHZ5 and PH2o/NHZ5 were 70.5, 68.4 and 68.7 wt-%, respectively, whereas their respective aromatic co.tents in the produced gasoline were 61.9, 55.4 and 39.0 wt-%. Thus Pn2o/NHZ5 is the most promising catalyst for MTG applications which can meet the China IV gasoline standard that the amount of aromatics in gasoline should be less than 48 wt-%.

关键词： MTG nano-scale H-ZSM-5 steam treatment,gasoline selectivity to gasoline

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

Opportunities beyond net-zero co.(2)for co.t-effective greenhouse gas mitigation in China

引用

Science Bulletin 2024年第21期69卷 3434-3443页

作者： Yating Kang Peipei Tian Kuishuang Feng Jiashuo Li Klaus Hubacek Institute of Blue and Green Development Shandong UniversityWeihai 264209China Department of Geographical Sciences University of MarylandCollege ParkMD 20742USA Integrated Research on Energy Environment and Society(IREES)Energy and Sustainability Research Institute Groningen(ESRIG)University of GroningenGroningen9747 AGtheNetherlands

Achieving net-zero co.(2)emissions is the current main focus of China’s carbon neutrality ***,non-co.(2)greenhouse gases(GHGs)are more powerful climate forcers,making their emission reduction an opportunity to rapidly mitigate future ***,we evaluate non-co.(2)mitigation potentials,co.ts and climate benefits in the co.text of China’s carbon neutrality *** assessment is co.ducted by co.pling the integrated assessment model GCAM with a climate *** findings indicate that mitigation technologies can largely reduce fluorinated gas emissions from industrial sectors,but long-term non-co.(2)reductions of energy sector activities rely heavily on fuel ***,the cumulative co.ts of deploying non-co.(2)mitigation technologies are projected to be less than 10%of the total co.ts of achieving carbon neutrality from 2020 to *** non-co.(2)mitigation measures are included in the overall mitigation portfolio,the benefits of avoided warming would by far outweigh the total mitigation co.t *** results thus highlight that inco.porating a wider suite of GHGs into climate change mitigation strategies can enhance the co.t-effectiveness of mitigation efforts.

关键词： Non-co.(2)greenhouse gas Emission trajectory Mitigation co.t Climate beneﬁt

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

Flexible micro-supercapacitors fabricated from MnO2 nanosheet/graphene co.posites with black phosphorus additive

引用

Progress in Natural Science:Materials International 2022年第1期32卷 10-19页

作者： Baocheng Liu Zongsheng Cao Zhengchun Yang Wen Qi Jie He Peng Pan Huayi Li Ping Zhang School of Electrical and Electronic Engineering Advanced Materials and Printed Electronics Center Tianjin Key Laboratory of Film Electronic & Communication DevicesTianjin University of Technology CISRI HIPEX Technology co LTD China Iron & Steel Research Institute Group School of Electrical and Information Engineering Tianjin University

Supercapacitors are widely used for powering flexible/wearable electronics owing to their excellent charge storage capabilities. In this study, MnO2nanosheets were grown on the surface of graphene using a simple water bath method to prepare graphene/MnO2co.posites for fabricating supercapacitors. In addition, two-dimensional black phosphorus was introduced as an additive into the electronic ink based on the as-prepared graphene/MnO2co.posites. The characterization and electrochemical analyses results showed that adding black phosphorus co.siderably improved the capacitive performance of the material, yielding a high specific capacitance of241.5 Fg-1at 0.1 ag-1and an impressive rate capability improvement from 52.5% to 80.3%. Then the microsupercapacitor having an area-specific capacitance of 20.15 mF cm-2at a scanning rate of 2 m V s-1was utilized to demonstrate the practical applicability of this material. To further evaluate the practical applicability of this micro-supercapacitor, the micro-supercapacitor was integrated with a flexible thin-film pressure sensor on paper and cloth through screen printing.

关键词： Manganese dioxide nanosheets Graphene Black phosphorus Micro-supercapacitor

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

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：