检索结果-南通市图书馆

Thermomechanical Fatigue Behaviour of a Nickel Base Superalloy

Journal of materials Science & Technology 1989年第1期5卷 1-7页

作者：梁晋 r.m.pelloux 谢锡善 Univiersity of Science and Technology Beijing formely Beijing Univiersity of Iron and Steel Technology 100083 China mIT Cambridge MA 02139 USA. Univiersity of Science and Technology Beijing (formely Beijing Univiersity of Iron and Steel Technoloqy) 100083 China.

The isothermal low cycle fatigue (LCF) and thermomechanical fatigue (TmF) behaviour of a Ni-base superalloy was investigated. The results show that temperature plays an important role in both LCF and TmF. The alloy shows the lowest LCF fatigue resistance in the intermediate temperature range (～760℃). For strain-controlled TmF, in-phase (IP) cycling is more damaging than out-phase (OP) cycling. The high tempera- ture exposure in the TmF cycling influences the deformation behaviour at the low temperature. LCF lives at different temperatures, and IP and OP TmF lives are successfully correlated by using the hysteresis parameter Δσ·Δε_p.

关键词： Ni-base superalloy low cycle fatigue thermomechanical fatigue.

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

New insights into diet breadth of polyphagous and oligophagous aphids on two Arabidopsis ecotypes

引用

Insect Science 2019年第4期26卷 753-769页

作者： Christopher Wattier Amelie Turbant Lisa Sargos-Vallade Jerome pelloux Christine rusterucci Anas Cherqui CrrBm (Centre de ressources regionales en Biologie moleculaire) Universite de Picardie Jules Verne Amiens Cedex France EA 3900 BIOPI (Biologie des Plantes et Innovation) Universite de Picardie Jules Verne Amiens Cedex France FrE CNrS 3498 EDYSAN (Ecologie et Dynamique des Systemes Anthropises) University de Picardie Jules Verne Amiens Cedex France

We investigated whether plant ecotype might affect aphid performance and behavioi. The probing behaviors of the polyphagous aphid myzus persicae and the oligophagous aphid Brevicoryne brassicae on two ecotypes of Arabidopsis thaliana, WS and Col-0 were recorded using the direct current electrical penetration graph method (DC-EPG). myzus persicae displayed a significant preference for the WS ecotype but was not greatly disturbed on Col-0, while B. brassicae discriminated between the two A. thaliana ecotypes, feeding less on WS than on Col-0. A Principal Component Analysis of aphid probing behavior data recorded on Col-0 and WS ecotypes showed that the one of m. persicae was positively correlated with the phloem ingestion phases while the one of B. brassicae was more related to nonfeeding phase. The survival of the aphid species was followed during early larval stages on the two ecotypes and a significantly higher mortality was observed of B. brassicae neonates compared to m. persicae. Both reared on WS. moreover, transcriptomic analysis of non infested plant leaves from both ecotypes was monitored and underlined constitutive differences between Col-0 and WS gene expression that might explain the different aphid behaviors. Among a unigene set comprising 39 042 sequences for A. thaliana, 6% were differently expressed affecting, for example, the secondary metabolites and cell wall pathways: two third upregulated in WS and one third upregulated in Col-0. Thus, the "ecotype” variable should be taken into account when setting up a plant-insect experimental research.

关键词： Arabidopsis thaliana Brevicoryne brassicae ecotypes EPG microarray myzus persicae

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

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

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：