检索结果-南通市图书馆

A new strategy for corrosion protection of porous stainless steel using polypyrrole films

Journal of Materials Science & Technology 2020年第2期37卷 85-95页

作者： c.garcia-cabezon c.garcia-Hernandez M.L.Rodriguez-Mendez F.Martin-Pedrosa Materials Engineering E.I.I.Universidad de Valladolid47011 ValladolidSpain UVASENS E.I.I.Universidad de Valladolid47011 ValladolidSpain

In this work,a method to improve the protection against corrosion of porous sintered stainless steel is *** is based on the electrodeposition of polypyrrole(PPy)layers doped with a large size counterion such as dodecylbenzenesulphonic acid(DBSA),a conducting polymer with high corrosion resistance and good *** efficacy of PPy coating depends on the adequate adhesion between the metal substrate and the coating *** protection against corrosion has been tested using 316 L stainless steel(SS)powder sintered at different conditions to evaluate the effect of the sintering atmosphere(nitrogen and vacuum)and cooling rates(furnace and water)on corrosion resistance,while wrought 316 L SS has been used as reference *** addition,two electrochemical deposition techniques have been tested to select the most *** circuit potential evolution,anodic polarization measurements and electrochemical impedance spectra have been used to evaluate corrosion protection in phosphate buffer saline *** has been evidenced that a more homogeneous and stable coating was obtained in the case of porous stainless *** corrosion potential shifted to nobler values and the anodic polarization branch became more *** porous samples have a good passivation performance with a lower stable passive current density and a higher breakdown *** transfer electronic resistance and the impedance module increase more than one order of ***,the porosity of sintered stainless steel is seen as an advantage for the improvement of the adherence of the PPy *** best corrosion protection is found for samples sintered in nitrogen and water-cooled.

关键词： Stainless steel Powder metallurgy Protection corrosion Electrodeposited films Polymer coatings

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

Identifying key elements in Knowledge-cities benchmarking

引用

学术界 2010年第3期 241-248页

作者： Blanca c.garcia Northern Borderlands Research college

This paper presentation explores four key aspects of the Identity capital existing in emerging cities and *** aspects are part of capital systems approaches such as the Generic System of capitals （GcS）:a tool to benchmark how cities are leveraging their capacity for knowledge-based *** this opportunity,elements of GSc’s Identity capital have been emphasized to observe a combination of clarity and differentiation aspects of a city identity in four distinct *** context-based identity seemingly illustrates how knowledge cities in the edge are building their identity advantage in the knowledge-based international arena.

关键词： Generic capitals System Identity capital Benchmarking Borderland Knowledge cities

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

Improvements in tribological and anticorrosion performance of porous Ti–6Al–4V via PEO coating

引用

Friction 2021年第5期9卷 1303-1318页

作者： c.garcia-cabezón M.L.Rodríguez-Méndez V.AmigóBorrás R.Bayón c.Salvo-comino c.garcia-Hernandez F.Martin-Pedrosa Materials Engineering E.I.I.Universidad de ValladolidValladolid 47011Spain BioecoUVA Research Institute Universidad de ValladolidValladolid 47011Spain Group UVASENS Escuela de Ingenierías IndustrialesUniversidad de ValladolidValladolid 47011Spain Instituto de Tecnología de Materials Univesitat Politécnica de ValenciaValencia 46022Spain Tribology Unit Fundación IK4-TeknikerEibar 20600Spain

Medical implants manufactured using biomaterial Ti–6Al–4V exhibit some *** higher elastic modulus than that of natural bone can cause stress shielding *** can be avoided using Ti–6Al–4V with pores in the implant ***,poor corrosion and tribocorrosion behaviors are yielded because of the large area exposed to the *** mitigate both issues,coating technologies can be *** plasma electrolytic oxidation(PEO)process is a cost‐effective process that has been used successfully in nonporous Ti *** this study,two PEO coatings with different amounts of ca/P are ***,reports regarding their application in porous materials are *** effects of PEO treatments on corrosion and tribocorrosion in Ti–6Al–4V powder metallurgy are analyzed *** porous materials provide an efficient surface for PEO coatings,as demonstrated via scanning electron microscopy(SEM)and atomic force microscopy(AFM),and the porosity of the substrates improved the adherence of the *** corrosion resistance measured via electrochemical impedance spectroscopy confirmed the beneficial effect of the coatings,particularly for long exposure *** lower roughness,small pore size,and more compact film observed in the PEO–ca/P sample resulted in favorable tribological and corrosion properties.

关键词： Ti‐based alloys corrosion tribocorrosion surface modification

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

chemical-Structural changes of Organic Matter in a Semi-Arid Soil After Organic Amendment

引用

Pedosphere 2012年第3期22卷 283-293页

作者： c.NIcOLS G.MAScIANDARO T.HERNNDEZ c.garcia centro de Edafología y Biología Aplicada del Segura (cEBAS-cSIc) Department of Soil and Water Conservation and Organic Wastes ManagementCampus Universitario de EspinardoP.O.160Murcia 3010 (Spain) consiglio Nazionale delle Ricerche (cNR) Istituto per lo Studio degli Ecosistemi (ISE)-Sezione di Chimica del SuoloArea della RicercaVia Moruzzi 1Pisa 56124 (Italy)

A 9-month incubation experiment using composted and non-composted amendments derived from vine pruning waste and sewage sludge was carried out to study the effects of the nature and stability of organic amendments on the structural composition of organic matter (OM) in a semi-arid *** changes of soil OM,both in the whole soil and in the extractable carbon with pyrophosphate,were evaluated by pyrolysis-gas chromatography and chemical *** the end of the experiment,the soils amended with pruning waste exhibited less organic carbon loss than those receiving sewage *** non-composted residues increased the aliphatic-pyrolytic products of the OM,both in the whole soil and also in the pyrophosphate extract,with the products derived from peptides and proteins being significantly *** 9 months,in the soils amended with pruning waste the relative abundance of phenolic-pyrolytic products derived from phenolic compounds,lignin and proteins in the whole soil tended to increase more than those in the soils amended with sewage ***,the extractable OM with pyrophosphate in the soils amended with composted residues tended to have higher contents of these phenolic-pyrolytic products than that in non-composted ***,despite the stability of pruning waste,the composting of this material promoted the incorporation of phenolic compounds to the soil *** pyrolytic indices (furfural/pyrrole and aliphatic/aromatic ratios) showed the diminution of aliphatic compounds and the increase of aromatic compounds,indicating the stabilization of the OM in the amended soils after 9 *** conclusion,the changes of soil OM depend on the nature and stability of the organic amendments,with composted vine pruning waste favouring humification.

关键词：土壤有机质有机添加物半干旱地区化学分析结构变化脂肪族化合物芳香族化合物污泥堆肥

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

Tracing changes in the Microbial community of a Hydrocarbon-Polluted Soil by culture-Dependent Proteomics

引用

Pedosphere 2010年第4期20卷 479-485页

作者： F.BASTIDA c.NIcOLS J.L.MORENO T.HERNNDEZ c.garcia Department of Soil and Water conservation Centro de Edafologia y Biologia Aplicada del Segura(CEBAS-CSIC)Campus Universitario de Espinardo

Hydrocarbon contamination may affect the soil microbial community, in terms of both diversity and function. A laboratory experiment was set-up, with a semi-arid control soil and the same soil but artificially contaminated with diesel oil, to follow changes in the dominant species of the microbial community in the hydrocarbon-polluted soil via proteomics. Analysis of the proteins extracted from enriched cultures growing in Luria-Bertani (LB) media showed a change in the microbial community. The majority of the proteins were related to glycolysis pathways, structural or protein synthesis. The results showed a relative increase in the complexity of the soil microbial community with hydrocarbon contamination, especially after 15 days of incubation. Species such as Ralstonia solanacearum, Synechococcus elongatus and different clostridium sp. were adapted to contamination, not appearing in the control soil, although Bacillus sp. dominated the growing in LB in any of the treatments. We conclude that the identification of microbial species in soil extracts by culture-dependent proteomics is able to partially explain the changes in the diversity of the soil microbial community in hydrocarbon polluted semi-arid soils, but this information is much more limited than that provided by molecular methods.

关键词：微生物群落蛋白质组学污染土壤文化生物群落多样性分子生物学方法碳氢化合物跟踪

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

charmed hadrons in nuclear medium

引用

chinese Physics c 2010年第9期34卷 1335-1338页

作者： L.Tolos D.Gamermann c.garcia-Recio R.Molina J.Nieves E.Oset A.Ramos Theory Group.KVI.University of Groningen Instituto de Física corpuscular (centro mixto cSIc-UV Institutos de Investigación de Paterna Aptdo.2208546071ValenciaSpain) Departamento de Física Atómica Molecular y NuclearUniversidad de Granada Departament d'Estructura i constituents de la Matèria Universitat de Barcelona

We study the properties of charmed hadrons in dense matter within a coupled-channel approach which accounts for Pauli blocking effects and meson self-energies in a self-consistent *** analyze the behaviour in this dense environment of dynamically-generated baryonic resonances as well as the open-charm meson spectral *** discuss the implications of the in-medium properties of open-charm mesons on the D s0 （2317） and the predicted X（3700） scalar resonances.

关键词： open-charm mesons spectral function dynamically-generated baryonic resonances charmed and hidden charmed scalar resonances

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

采用改进冲击摆锤评价7075-T651合金焊缝的断裂能（英文）

引用

Transactions of Nonferrous Metals Society of china 2016年第4期26卷 974-983页

作者： R.R.AMBRIZ D.JARAMILLO c.garcia F.F.cURIEL Instituto Politécnico Nacional cIITEc-IPN Cerrada de Cecati S/N Col.Sta.Catarina C.P 02250AzcapotzalcaDFMexico Mechanical and Aerospace Engineering Carleton University1125 Colonel By DriveOttawaONK1S 5B6Canada Universidad Autónoma de coahuila(UAdec) Facultad de MetalurgiaCarr 57Km 5MonclovaCoahuilaMexico

采用改进冲击摆锤,研究7075-T651合金焊缝夏比试样的力-时间曲线。考虑力-时间曲线和恒冲击速率,获得不同区域的断裂能。与焊缝金属(7.88 J)和基体金属(5.37 J(纵向)和7.37 J(横向))的断裂能相比,热影响区的断裂能更高(33.6 J),这是由... 详细信息

采用改进冲击摆锤,研究7075-T651合金焊缝夏比试样的力-时间曲线。考虑力-时间曲线和恒冲击速率,获得不同区域的断裂能。与焊缝金属(7.88 J)和基体金属(5.37 J(纵向)和7.37 J(横向))的断裂能相比,热影响区的断裂能更高(33.6 J),这是由于焊接过程中,热力学不稳定的η′相发生组织转变。焊缝区的断裂能比基体合金的高,这是由于焊接凝固过程中产生大量孔洞。为从力-时间曲线中获得动态屈服力,对焊缝、热影响区和基体合金的屈服强度进行近似处理。断裂形貌表明,基体合金在纵向方向上呈现晶间断裂,而在横向方向上,主要为脆性(解理)断裂并伴有韧性断裂特征。而焊缝区和热影响区则呈现韧性断裂。

关键词： 7075-T651焊接接头改进夏比摆锤力-时间曲线断裂能动态屈服强度

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

Novel proteomics method reveals an atypical hyperacidic Grp78/Bip isoform upregulated by treatment with TLR2 agonists or bacterial infection in THP-1 cells without endoplasmic reticulum stress and apoptosis

Novel proteomics method reveals an atypical hyperacidic Grp7...

引用

中国生物化学与分子生物学会第十届会员代表大会暨全国学术会议

作者： Lijun Tang cristian J.A.Asensio Rodolfo c.garcia Molecular Biology Research center School of Biological Science and TechnologyCentral South University

TLRs are pattern recognition receptors that act as primary sensors of microbial *** are now 10 TLRs identified in humans,found in both the innate and the adaptive immune system,where they play a pivotal role in the response directed against distinct,structurally conserved components of ***-1 macrophage-like cells were infected with Mycobacterium avium,Borrelia burgdorferi or heat-killed ***,or treated with agonists of TLR2 and TLR4 for different *** screened for proteome differences induced by the different agents by comparing with untreated cells after protein *** of the up-regulated phosphorylated proteins after infection or treatment with TLR2 agonists was identified as a novel

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Thermoluminescence characterization of natural and synthetic irradiated ce-monazites

引用

Journal of Rare Earths 2024年第4期42卷 643-650页

作者： V.correcher c.Boronat J.garcia-Guinea J.F.Benavente T.Rivera-Montalvo cIEMAT Av.Complutense 4028040MadridSpain MNcN-cSIc J.Gutierrez Abascal 228006MadridSpain Instituto Politécnico Nacional CICATA-IPNAv.Legaria 694Mexico City11500Mexico

The thermoluminescence(TL)emission of synthetic and natural ce-monazites was characterized here to determine the potential application in the identification of microscopic defects from a qualitative point of view trying to link each TL peak to a chemical-physical *** kinetic parameters that lead the luminescence processes were calculated by means of variable heating rate and computing glow curve deconvolution methods and allow identifying three groups of components at~90,130 and 290℃(for the mineral sample)and~90,170,220,270 and 320℃(for the synthetic cePO_(4):Nd_(0.20),La_(0.25)).The main differences appreciated in these complex TL curves are mainly due to(i)the content of impurities(natural sample contains lanthanides as well as U 0.60%and Th 5.22%)and(ii)the degree of crystallinity of the samples which is directly related to the type of impurities(synthetic monazite relies only on Nd and La).The behavior of the dose response in the range of 1-8 Gy is similar for both samples;the TL intensity increases linearly as the dose increases without changes in the position of the maxima,denoting first-order kinetic luminescence *** peak could be mostly associated with structural defects(i.e.,phase transitions),chemical reactions(i.e.,ce3+?ce4+redox reaction,dehydration or dehydroxylation processes)or intrinsic defects(i.e.,Frenkel defects,ODcs or NBOHcs).

关键词： Thermoluminescence Kineticparameters Phosphate ce-monazite Defects Rare earths

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

硬粒小麦与玉米和珍珠粟杂交中授粉亲本对单倍体生产的影响

引用

国外作物育种 2004年第5期23卷 23-24页

作者： c.garcia-Llamas 邱敦莲

由于通过单倍体加倍可以缩短育种周期，因此双单倍体(DH)的生产是小麦育种的重要进步。另外，由于DH系是完全纯合的，因此更容易识别优良基因型，从而提高了对选择的反应。小麦单倍体生产中最常用的方法是花药培养或小孢子培养和小麦×... 详细信息

由于通过单倍体加倍可以缩短育种周期，因此双单倍体(DH)的生产是小麦育种的重要进步。另外，由于DH系是完全纯合的，因此更容易识别优良基因型，从而提高了对选择的反应。小麦单倍体生产中最常用的方法是花药培养或小孢子培养和小麦×玉米杂交。

关键词：单倍体杂交授粉硬粒小麦亲本玉米育种周期生产影响数量

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

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：