نتایج جستجو برای: double walled cylinder
تعداد نتایج: 274994 فیلتر نتایج به سال:
Pt-Ru supported on carbon nanotubes (CNTs) (single-walled nanotubes, double-walled nanotubes (DWNTs), and multi-walled nanotubes) catalysts are prepared by an ethylene glycol reduction method. Pt-Ru nanoparticles with a diameter of 2-3 nm and narrow particle size distributions are uniformly deposited onto the CNTs. A simple and fast filtration method followed by a hot-press film transfer is emp...
The present report describes a male newborn with a pulsatile structure beneath the sternum. Echocardiography showed common atrium, a single ventricle, mitral atresia, double outlet right ventricle, subpulmonary stenosis, small pulmonary artery branches, and a thin walled ventricular diverticulum suggestive of Cantrell's syndrome. The diverticulum was resected to prevent life threatening events ...
The rate at which fluid drains from a collapsing channel or crack depends on the interaction between the elastic properties of the solid and the fluid flow. The same interaction controls the rate at which a pressurized fluid can flow into a crack. In this paper, we present an analysis for the interaction between the viscous flow and the elastic field associated with an expanding or collapsing f...
The present work is an experimental account of the way in which several machine settings, particularly cylinder knock-over and dial-height, influence fabric dimensions, course length, bending behavior and load extension of fabrics produced on a circular knitting machine. The results show that there are certain optimum settings for such variables as knock-over depth and dial-height for producing...
Thin-walled parts are commonly used in the aerospace sector. However, there serious machining challenges, such as deflection, deformation and vibration. The final thin-walled component will deteriorate dimensional accuracy surface quality. This is due to vibration that occurs during flexible milling of structures since workpiece rigidity lower than cutting forces cutter. gradual reduction thin-...
A tetracationic supramolecular cylinder, [Fe2L3] (L=C25H20N4), with a triple-helical architecture is just the right size to fit into the major groove of DNA and too big to fit into the minor groove [Angew. Chem. Int. Ed. 2001, 40, 879-884]. A detailed NMR spectroscopic analysis supported by molecular dynamics calculations shows unambiguously the close fit between the cylinder and a duplex oligo...
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