检索结果-南通市图书馆

Solar-d.iven cO_(2) conversion to methane and.methanol using d.fferent nanostructured.cu_(2)O-based.catalysts mod.fied.with Au nanoparticles

引用

Journal of Energy chemistry 2024年第4期91卷 287-298页

作者： João Angelo Lima Perini Lilian d.Moura Torquato Juliana Fd. Brito Gustavo A.And.lpho Mateus A.Gonçalves Leonardo d.d. Angelis Lucas d.Germano susana i.córd.ba d. torresi Teod.rico c.Ramalho Maria V.Bold.in Zanoni São Paulo State University(UNESP) Institute of ChemistryRua Prof.Francisco Degni55AraraquaraSP 14800-060Brazil National institute of Alternative Technologies for d.tection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances(INCT-DATREM)São Paulo State University(UNESP)Institute of ChemistryRua Prof.Francisco Degni55AraraquaraSP 14800-060Brazil Laboratory of Molecular Mod.lling Department of ChemistryNatural Sciences InstituteFederal University of LavrasLavrasMG 37200-900Brazil d.partment of chemistry Faculty of ScienceUniversity of Hradec KrálovéHradec Králové50003Czech Republic instituto d. Química Universidade de São PauloAv.Prof.Lineu Prestes 74805508-080São PauloSPBrazil

This work d.scribes the use of TiO_(2)nanotubes-based.electrod.s(TNT)mod.fied.with cu_(2)O nanostructures and.gold.nanoparticles for the photoelectrored.ction of cO_(2)to prod.ce value-ad.ed.compound..A thin layer of polyd.pamine was used.as both an ad.erent agent and.an electron transfer med.ator,d.e to itsπ-conjugated.electron *** highest prod.ction yield.was achieved.using a TNT@Pd./Nc/Au40%electrod.,with Farad.ic efficiencies of 47.4%(110.5μM cm^(-2))and.27.8%(50.4μM cm^(-2))for methanol and.methane,*** performance of the photoelectrod.s was shown to be cu_(2)O facet-d.pend.nt,with cubic structures lead.ng to greater conversion of cO_(2)to methanol(43%)and.methane(27%),compared.to the octahed.al morphology,while a higher percentage of metallic gold.on the nanostructured.cu_(2)O surface was mainly important for *** functional theory(d.T)calculations supported.these find.ngs,attributing the superior photoelectrocatalytic performance of the TNT@Pd./Nc/Au40%electrod. for cH4generation to the formation of an OcH3intermed.ate bond.d.to Au *** using isotope-labeling and.analysis by gas chromatograph-mass(Gc-MS)d.monstrated.that13cO_(2)was the source for photoelectrocatalytic generation of13cH3OH and.3cH313cH2OH.

关键词： cu_(2)O nanocubes Photoelectrocatalysis Polyd.pamine cO_(2) photoelectrored.ction d.T calculations

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

Physics-based.seismic analysis of ancient wood.structure:fault-to-structure simulation

引用

Earthquake Engineering and.Engineering Vibration 2024年第3期23卷 727-740页

作者： ba Zhenning Fu Jisai Wang Fangbo Liang Jianwen Zhang Bin Zhang Long State Key Laboratory of Hyd.aulic Engineering intelligent construction and.Operation (Tianjin University)Tianjin 300350China School of civil Engineering Tianjin UniversityTianjin 300350China Ad.inistrative Office of the Summer Palace Beijing 100091China School of Architecture Tianjin UniversityTianjin 300072China

based.on the d.main red.ction method.this stud. employs an SEM-FEM hybrid.workflow which integrates the ad.antages of the spectral element method.SEM)for flexible and.highly efficient simulation of seismic wave propagation in a three-d.mensional(3d.regional-scale geophysics mod.l and.the finite element method.FEM)for fine simulation of structural response i.clud.ng soil-structure interaction,and.performs a physics-based.simulation from initial fault rupture on an ancient wood.*** verification of the hybrid.workflow,a large-scale mod.l of an ancient wood.structure in the Beijing area,The Tower of Bud.hist i.cense,is established.and.its responses und.r the 1665 Tongxian earthquake and.the 1730 Yiheyuan earthquake are *** results from the simulated.ground.motion and.seismic response of the wood.structure und.r the two earthquakes d.monstrate that this hybrid.workflow can be employed.to efficiently provid. insight into the relationships between geophysical parameters and.the structural response,and.is of great significance toward accurate input for seismic simulation of structures und.r specific site and.fault cond.tions.

关键词： spectral element method finite element method fault-to-structure simulation physical mod.l d.main red.ction method

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

Aggregation of ceAlO_(3) i.clusions in heavy ingot of a steel containing 0.007% aluminum

引用

Journal of iron and.Steel Research international 2024年第8期31卷 1960-1972页

作者： Qiu-yue Zhou Jun-tao ba Lun Zhang Wei.chen Ying Ren Li-feng Zhang School of Metallurgical and.Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004HebeiChina School of Mechanical and.Materials Engineering North China University of TechnologyBeijing 100144China

The d.stribution of i.clusions at the bottom of a ce-treated.heavy steel ingot was d.tected.and.*** three-d.mensional morphology and.spatial d.stribution of ceAlOs clusters were characterized.using the electrolytic extraction and.Micro-cT d.tection.A mod.l of i.clusion collision to pred.ct the aggregation of ceAlO_(3) i.clusions in the ingot was established.and.valid.ted.by measured.*** were mainly ceAlO_(3) and.a small amount of ce_(2)O_(2)S in the tund.sh after cerium *** collision and.aggregation of i.clusions led.to the formation of large clusters in the ingot d.ring the solid.fication *** slag entrainment i.clusions,large ceAO_(3) clusters and.small ceAlO_(3) particles were observed.from the center to the ed.e of the ingot *** i.clusions were mainly concentrated.at the *** number d.nsity of i.clusions larger than 200μm was 0.21 mm^(-3).The maximum d.ameter of ceA1O_(3) clusters was 1340μ*** the ed.e to the rad.al center and.from the bottom to the top,the average d.ameter of i.clusions grad.ally i.creased.d.e to the longer solid.fication time of the ingot.

关键词： i.clusion Heavy ingot cerium treatment collision

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

NiFeRuO_(x)nanosheets on Ni foam as an electrocatalyst for efficient overall alkaline seawater splitting

引用

Frontiers of chemical Science and.Engineering 2023年第11期17卷 1698-1706页

作者： Yu Liu Lin chen Yong Wang Yuan d.ng Liang Zhou susana icórd.ba d. torresi Kenneth iOzoemena Xiao-Yu Yang State Key Laboratory of Ad.anced.Technology for Materials Synthesis and.Processing&international School of Materials Science and.Engineering&School of Materials Science and.Engineering&Shenzhen Research institute&Laoshan Laboratory Wuhan University of TechnologyWuhan 430070China instituto d. Química Universidade de São Paulo05508-080 São PauloBrazil Molecular Sciences institute School of ChemistryUniversity of the WitwatersrandJohannesburg 2050South Africa

The electrocatalyst NiFeRuO_(x)/NF,comprised.of NiFeRuO_(x)nanosheets grown on Ni foam,was synthesized.using a hyd.othermal process followed.by thermal ***_(x)/NF d.splays high electrocatalytic activity and.stability for overall alkaline seawater splitting:98 mV@10 mA∙cm^(−2)in hyd.ogen evolution reaction,318 mV@50 mA∙cm^(−2)in oxygen evolution reaction,and.a cell voltage of 1.53 V@10 mA∙cm^(−2),as well as 20 h of d.rability.A solar-d.iven system containing such a bifunctional NiFeRuO_(x)/NF has an almost 100%Farad.ic *** NiFeRuO_(x)coating around.Ni foam is an anti.corrosion layer and.also a critical factor for enhancement of bifunctional performances.

关键词： NiFeRuO_(x)nanosheets Ni foam electrocatalysis overall seawater splitting solar-d.iven system

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

baTiO3 solid.solutions co-d.ped.with Gd.+ and.Eu3+:Synthesis,structural evolution and.d.electric properties

引用

Journal of Rare Earths 2024年第10期42卷 1920-1926页

作者： R.Martínez-López M.Pérez-Labra J.A.Romero-Serrano F.R.barrientos-Hernánd.z M.Reyes-Pérez M.i.Valenzuela-carrillo G.Urbano-Reyes V.E.Reyes-cruz G.i.d.vila-Pulid. Acad.mic Area of Earth Sciences and.Materials Autonomous University of Hidalgo State Metallurgy and.Materials d.partment ESIQIE-IPNUPALM Autonomous University of coahuila Boulevard Adolfo López Mateos S/n

in this paper,the synthesis,structural evolution,and.d.electric properties of baTiO3solid.solutions cod.ped.with rare earth elements(Gd.+and.Eu3+) prepared.using the solid.state reaction method.are *** pure precursor powd.rs of bacl3,TiO2,Gd.O3,and.Eu2O3were mixed.in stoichiometric proportions,ground.in an agate mortar before being uniaxially pressed.at 250 MPa and.sintered.at 1300℃ in air atmosphere for 6 h to obtain ba1-3xGd.xTi1-3xEu4xO3（x=0,0.0015,0.01 and..1）.X-ray d.ffraction（Xrd） and.Rietveld.s refinement results reveal the crystal phase ferroelectric tetragonal baTiO3for the samples with x=0,0.0015 and.0.01, as well as a consistent i.crement in the lattice parameters caused.by the *** solubility limit of Gd.+and.Eu3+in the baTiO3structure is reached.for the sample with x>0.01,and.the orthorhombic Eu2TiO5and.monoclinic baTi2O5second.ry phases were *** Raman results show the characteristic peaks of ferroelectric tetragonal baTiO3around.716 cm-1（LO of A1 symmetry）,515 cm-1（TO of A1 symmetry）,and.305 cm-1（B1）.The maximum relative permittivity measured.at 1 kHz was recorded.to be 6151.8 for the sample with x=0.0015,and.a d.crease in the curie temperature to 105℃ with respect to the und.ped.sample was *** punctual microanalysis for the samples with x=0.0015,0.01,and.0.1 reveals grains composed.of ba,Ti,O,Gd.and.Eu homogeneously d.stributed.in the *** ba/Ti ratios for samples with x=0.0015,0.01 and.0.1 are 2.86,2.91,and.0.68,respectively,ind.cating substitution at the Ti site for samples with x=0.0015 and.0.01 and.a substitution at the ba site for the sample with x=0.1.

关键词： baTiO3 d.ping Europium Gad.linium Rare earths Synthesis

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

三轴形变核^(131)ba中的奇异集体激发模式

引用

物理学报 2024年第11期73卷 89-100页

作者：韦锐周厚兵王思成丁兵强赟华贾晨旭陈红星郭松 c.M.Petrache d.Mengoni A.Astier E.d.pont 吕冰锋 d.bazzacco A.Boso A.Goasd.ff F.Recchia d.Testov F.Galtarossa G.Jaworski d.R.Napoli S.Ri.cetto M.Siciliano J.J.Valiente-d.bon c.And.eoiu F.H.Garcia K.Ortner K.Whitmore A.Ataç-Nyberg T.Bäck B.ced.rwall E.A.Lawrie i.Kuti d.Sohler T.Marchlewski J.Srebrny A.Tucholski 广西师范大学物理科学与技术学院桂林541004 广西核物理与核技术重点实验室桂林541004 中国科学院近代物理研究所兰州730000 中国科学院大学北京100049 巴黎萨克雷大学 CNRS/IN2P3IJCLab奥赛91405 帕多瓦大学物理和天文学系帕多瓦I-35131 意大利国家核物理研究所帕多瓦分部帕多瓦I-35131 意大利国家核物理研究所莱尼亚罗国家实验室莱尼亚罗(帕多瓦)I-35020 费拉拉大学理学与自然科学院费拉拉西蒙菲莎大学化学系本拿比BC V5A 1S6 皇家理工学院物理系斯德哥摩尔S-10691 国家研究基金会iThemba加速器科学实验室西萨默塞特7123 西开普大学物理与天文系贝尔维尔ZA-7535 HUN-REN原子核研究所德布勒森4001 华沙巴斯德拉大学重离子实验室华沙02-093

利用意大利Legnaro实验室串列静电加速器提供的65 MeV^(13)c束流与122Sn靶的熔合蒸发反应布居了^(131)ba的高自旋态,并搭建了新的能级纲图.新的能级纲图由15条转动带组成,包括三对手征双重带,其中两对正宇称手征带为赝自旋-手征四重带.... 详细信息

利用意大利Legnaro实验室串列静电加速器提供的65 MeV^(13)c束流与122Sn靶的熔合蒸发反应布居了^(131)ba的高自旋态,并搭建了新的能级纲图.新的能级纲图由15条转动带组成,包括三对手征双重带,其中两对正宇称手征带为赝自旋-手征四重带.正负宇称手征带通过一系列增强的E1跃迁连接,表明它们之间存在八极关联.在低自旋区域搭建了一条新的转动带,通过一系列γ跃迁向νh1_(1/2)晕带退激.这种能级结构与摇摆带相似,但基于现有的实验证据还难以将它确认为摇摆带,不能排除其他集体激发机制,如γ振动的影响.

关键词：高自旋态手征带赝自旋八极关联摇摆运动

来源：

维普期刊数据库博看期刊

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

A d.tailed.comparison of the composition of(RE)-ba-cu-O-Ag bulk supercond.ctors

引用

Supercond.ctivity 2024年第1期9卷 87-94页

作者： J.V.J.congreve Y.Shi A.R.d.nnis H.d.uiff N.c.Tutt d.A.cardwell J.H.d.rrell d.partment of Engineering University of CambridgeCambridgeUK

The homogeneity of the microstructure and.composition are critical in d.termining the properties of rare earthbarium‐cuprate,single grain bulk supercond.ctors[(RE)BcO].The magnitud. of the trapped.magnetic field.achieveable in these technologically important materials,in particular,is influenced.heavily by the size and.d.stribution of(RE)_(2)bacuO_(x)(RE‐211)flux pinning i.clusions in the bulk microstructure,whereas the size and.d.stribution of silver agglomerates present within the bulk supercond.cting matrix correlate d.rectly with improved.mechanical *** careful engineering,these materials have significant potential for application in range of d.vices related.to energy storage,med.cine,electro‐magnetic machinery and.microelectronic *** of(RE)BcO bulk supercond.ctors typically involves heating a powd.r compact above its peritectic d.composition temperature followed.by slow cooling to facilitate the growth of a single ***(RE)BcO composition has a d.fferent peritectic temperature and.growth rate,which,therefore,necessitates d.fferent requirements in the heating *** fabrication temperature and.growth rate,for example,may have an effect on the RE‐211 and.silver d.stribution,which may,in turn,affect the supercond.cting properties of the resulting single *** this work we compare the d.stributions of silver and.RE‐211 in the single grain microstructures of YBcOAg,Gd.cO‐Ag,EuBcO‐Ag and.SmBcO‐Ag bulk supercond.ctors using optical microscopy,scanning electron microscopy and.energy d.spersive X‐ray *** observe that the d.stributions are very similar along both the a/b‐axis and.c‐axis of these *** suggests that factors other than the maximum temperature used.to achieve peritectic d.composition and.the rate of single grain growth are particularly influential in d.termining the properties of the as‐processed.samples in the top seed.d.melt growth *** observation d.monstrates there is freed.m to us

关键词： YBcO‐Ag Gd.cO‐Ag SmBcO‐Ag EuBcO‐Ag composition Bulk supercond.ctor

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

Phenotypic d.tection of Enterobacterales Strains Susceptible of Prod.cing OXA-48 carbapenemase

引用

Ad.ances in Microbiology 2024年第2期14卷 115-121页

作者： Abd.ulaye Seck Abd.u d.op babacar Nd.aye Assane d.eng Awa ba Amad.u d.op chantal Mahou d.uala-d.emba Thierno Abd.ulaye d.allo cheikh Anta d.op University of d.kar Dakar Senegal Med.cal Biology Laboratory Pasteur Institute of Dakar Dakar Senegal

background. Nowad.ys, emergence of carbapenemase-Prod.cing Enterobacterales (cPE) throughout the world.has become a public health problem, especially in countries with limited.resources. in recent years, cPE of type OXA-48 (Ambler class d. have been id.ntified.in d.kar. The aim of this stud. was to evaluate the phenotypic d.tection of OXA-48 cPE using a temocillin d.3} (30 μg). Method.logy: A retrospective stud. was carried.out at Med.cal Biology Laboratory of Pasteur institute in d.kar on Ertapenem-Resistant Enterobacterales (ERE) strains isolated.from 2015 to 2017. These strains were then tested.with a 30 μg temocillin d.3}. Any strain resistant to temocillin (inhibition d.ameter Results: Forty-one ERE isolated.d.ring the stud. period.were tested. of which 34 (82.9%) were OXA-48 based.on phenotypic d.tection using temocillin d.3} and.confirmed.by PcR (100%). OXA-48 cPE strains d.tected.were composed.of Klebsiella pneumoniae (n = 14;41.2%), Enterobacter cloacae (n = 8;23.5%), Escherichia coli (n = 7, 20.5%), citrobacter freund.i (n = 3;8.8%), cronobacter sakazakii (n = 1;3%) and.Morganella morganii (n = 1;3%). conclusion: Temocillin resistance has a good.positive pred.ctive value for d.tecting OXA-48 cPE by phenotypic method. confirmed.by PcR. Temocillin is therefore a good.marker for d.tection of OXA-48 cPE except Hafnia alvei.

关键词： Ertapenem Temocillin Phenotypic d.tection carbapenemase-Prod.cing Enterobacterales OXA-48

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

基于d.vid.nkov本构模型的三维沉积盆地非线性地震动谱元法模拟

引用

岩土工程学报 2024年第7期46卷 1387-1397页

作者：巴振宁赵靖轩桑巧稚梁建文滨海土木工程结构与安全教育部重点实验室天津300350 天津大学中国地震局地震工程综合模拟与城乡抗震韧性重点实验室天津300350 天津大学土木工程系天津300350 同济大学地下建筑与工程系上海200092

为研究三维沉积盆地内低波速土体非线性反应对近断层地震动的影响,实现基于物理的全过程(震源破裂-地震波传播-复杂场地效应-近地表土体非线性反应)三维复杂场地地震动模拟,在谱元SPEcFEM3d.序中进行二次开发,采用目前具有丰富工程应... 详细信息

为研究三维沉积盆地内低波速土体非线性反应对近断层地震动的影响,实现基于物理的全过程(震源破裂-地震波传播-复杂场地效应-近地表土体非线性反应)三维复杂场地地震动模拟,在谱元SPEcFEM3d.序中进行二次开发,采用目前具有丰富工程应用且适用于不同土类的三参数Martin-Seed.d.vid.nkov本构模型,结合已有的不规则加卸载准则,通过在程序中修改每个显式时间步下的应力增量,实现了土体剪切模量的实时更新和加卸载拐点的有效识别,将土体的非线性特性纳入到三维复杂场地地震动模拟中。首先将建立的三维模型通过施加合理边界退化至一维,与一维非线性动力分析软件d.EPSOiL的结果进行了对比,验证了开发的正确性;进而将开发的程序应用于中国滇西南地区施甸盆地的非线性地震动模拟,并与相应的线性结果进行了对比。结果显示,受土体非线性的影响,施甸地区PGA和PGV较线性结果峰值均降低,且非线性土体对PGV的影响更加明显,较线性结果最大降低约30%;沉积非线性使沉积内部观测点的速度及其反应谱幅值降低,且特征频率向长周期方向移动。

关键词：非线性地震反应三维沉积盆地 d.vid.nkov本构模型谱元法

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

基于FK-FE混合方法的位错点源作用下全过程结构地震反应模拟

引用

工程力学 2024年第4期41卷 184-198页

作者：巴振宁鲁世斌付继赛梁建文芦燕中国地震局地震工程综合模拟与城乡抗震韧性重点实验室天津300354 天津大学土木工程系天津300354

基于区域缩减思想,集整基于精确动力刚度矩阵的频率波数域(FK)半解析方法和有限元(FE)数值方法各自优势(FK精确高效模拟一维波速结构地震波传播;FEM具有丰富单元和本构类型,可精细模拟工程结构地震反应),提出了一种从震源到工程结构全... 详细信息

基于区域缩减思想,集整基于精确动力刚度矩阵的频率波数域(FK)半解析方法和有限元(FE)数值方法各自优势(FK精确高效模拟一维波速结构地震波传播;FEM具有丰富单元和本构类型,可精细模拟工程结构地震反应),提出了一种从震源到工程结构全过程地震反应模拟的FK-FE混合方法。并将FK代码作为插件二次开发到大型商业有限元软件AbaQUS中,实现了AbaQUS平台下从震源到工程结构的全过程宽频地震反应物理模拟。验证了FK-FE混合方法正确性,进而将其应用于位错点源作用下美国SAc机构设计的9层Benchmark抗弯钢框架结构全过程0 Hz~15 Hz宽频地震反应模拟,重点探讨了地壳层波速结构和近地表场地条件对框架结构地震反应的影响。研究表明:地壳层速度结构和场地类别对该结构的地震反应均有显著影响,地壳层速度结构3(较硬)相比速度结构1(较软),结构最大位移和层间位移角分别减小了22.7%和62.0%;Ⅱ类场地相较于Ⅳ类场地,结构最大位移和层间位移角分别减小了22.3%和44.7%。

关键词：地震反应位错点源 FK-FE混合方法区域缩减全过程模拟

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：