نتایج جستجو برای: double walled cylinder

تعداد نتایج: 274994  

2006
Yuantong Gu Liangchi Zhang

This paper developed an effective multiscale method for analysing the deformation of NanoElectroMechanical (NEM) switches based on carbon nanotubes. The switches were simplified to beam systems with loads calculated from three-coupled energy domains: the electrostatic energy domain, the elastostatic energy domain, and the van der Waals energy domain. A meshless formulation was then used to disc...

Journal: :Circulation 1979
J G Dumesnil R M Shoucri J L Laurenceau J Turcot

In this paper we examine the relations that may exist between the geometric variables most frequently used to describe left ventricular contraction. The left ventricle is represented by a thick-walled cylinder contracting both radially and longitudinally. For this model, wall thickening, mid-wall radius shortening and longitudinal axis shorteining can be shown to be uniquely related during cont...

Journal: :Chemical communications 2014
Renxi Jin Yang Yang Yunfeng Li Lin Fang Yan Xing Shuyan Song

Highly dispersive and ultrafine Au nanoparticles were effectively immobilized on the surface of hierarchical double-walled nickel silicate hollow nanofibers assembled by ultrathin nanosheets, which showed remarkable catalytic performances as an efficient and reusable hydrogenation catalyst.

Journal: :Chemical communications 2009
Carmen-Mihaela Tîlmaciu Brigitte Soula Anne-Marie Galibert Petar Lukanov Lucien Datas Jesús González Luis Fernández Barquín Jesús Rodríguez Fernández Fernando González-Jiménez Jose Jorge Emmanuel Flahaut

The synthesis and characterization of superparamagnetic iron(iii) oxide nanowires confined within double-walled carbon nanotubes by capillary filling with a melted precursor (iron iodide) followed by thermal treatment is reported for the first time.

Journal: :Chemical communications 2011
Yongfeng Li Shimou Chen Toshiro Kaneko Rikizo Hatakeyama

Our study indicates that it is possible to move single-stranded DNA (ssDNA) molecules into and out of double-walled carbon nanotubes by utilizing DC electric fields with different polarities.

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