检索结果-南通市图书馆

Wave Propagation Model in a Human Long Poroelastic Bone under Effect of Magnetic Field and Rotation

Computers, Materials & Continua 2021年第8期68卷 1485-1504页

作者： A.M.Abd-Alla Hanaa Abu-Zinadah S.M.Abo-Dahab j.bouslimi M.Omri Department of Mathematics Sohag UniversitySohagEgypt Department of Statistics University of JeddahCollege of ScienceJeddahSaudi Arabia Department of Mathematics South Valley UniversityQena83523Egypt Department of Engineering Physics and Instrumentation National Institute of Applied Sciences and TechnologyCarthage UniversityTunisia Department of Physics Taif UniversityTaifSaudi Arabia Deanship of Scientific Research King Abdulaziz UniversityJeddahSaudi Arabia

This article is aimed at describing the way rotation and magnetic field affect the propagation of waves in an infinite poroelastic cylindrical *** offers a solution with an exact closed *** authors got and examined numerically the general frequency equation for poroelastic ***,they calculated the frequencies of poroelastic bone for different values of the magnetic field and *** the results of previous studies,the authors noticed little frequency dispersion in the wet *** proposed model will be applicable to wide-range parametric projects of bone mechanical *** the vibration of surface waves in rotating cylindrical,long human bones under the magnetic field can have an *** findings of the study are offered in ***,a comparison with the results of the literature is conducted to show the effect of rotation and magnetic field on the wave propagation *** is worth noting that the results of the study highly match those of the literature.

关键词： Propagation of waves rotation magnetic field poroelastic wet bone natural frequency magnetic field

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

Influence of Oil-paper Conditions on the Static Electrification Phenomena of Transformer Oils

引用

高电压技术 2013年第8期39卷 1966-1973页

作者： Y. bouslimi K. Taheri I. Fofana H. Hemmatjou C. Volat (Canada Research Chair on Insulating Liquids and Mixed Dielectrics for Electrotechnology (ISOLIME) Universit6 du Qu6bec h Chicoutimi Qc Canada)

This contribution is not only intended to provide a fresh review for researches on static electrification, but also contains a sub- stantial amount of new material with a view of closing some gaps in the present state of knowledge of oil streaming electrification. In this paper, the Electrostatic Charging Tendency (ECT) of fresh (unaged) and aged transformer oils were investigated in a spinning disk system. Static electrification measurement at different aging degrees was carried out under laboratory controlled conditions. Changes in static elec- trification were compared to some classical aging indexes (conductivity, dissipation factor, water content, resistivity, etc.). Fast, inexpensive and reliable laboratory testing procedures developed by American Society for Testing Materials (D 6802 and D 6181) were also used to monitor decay products as trace impurities. The obtained results show that static electrification currents increase with temperature, fluid mo- tion velocity, surface properties and the aging byproducts of the oil. The polarity, the amplitude and the time constant of the electrification currents are also affected. The results show that static electrification has relationship with thermal aging and is sensitive to turbidimetric and spectrophotometric measurements.

关键词：静电充电变压器油带电现象分光光度测量实验室测试老化程度油纸电气化

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

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：