نتایج جستجو برای: 90o sharp bend
تعداد نتایج: 50211 فیلتر نتایج به سال:
Articles you may be interested in Ballistic thermoelectric properties in boron nitride nanoribbons Geometrical effects on the thermoelectric properties of ballistic graphene antidot lattices Acoustic phonon transport and ballistic thermal conductance through a three-dimensional double-bend quantum structure J. Coherent, i.e., ballistic, thermoelectric transport in electron waveguide structures ...
A Flexible Distal Tip with Two Degrees of Freedom for Enhanced Dexterity in Endoscopic Robot Surgery
A flexible distal tip with two degrees of freedom has been developed for endoscopic robot surgery. The flexible tip consists of a superelastic NiTi tube which can be bent from -90o to +90o in 2 directions by means of 4 cables. The improvement over previous devices is the combination of two degrees of freedom with a small diameter of only 5 mm. An additional advantage is the tool channel which e...
Bend existence induces changes in the flow pattern, velocity profiles and water surface. In the present study, based on experimental data, first three-dimensional computational fluid dynamic (CFD) model is simulated by using Fluent two-phase (water + air) as the free surface and the volume of fluid method, to predict the two significant variables (velocity and channel bed pressure) in 90º sharp...
This paper discusses the calculation of bend minimal shapes for non-planar graphs with given topology. Based on the Simple-Kandinsky drawing standard – a simplification of the more complex Kandinsky standard – we show the disadvantage of using standard models for this task: We show that the minimal bend count is suboptimal, when these models are applied to non-planar graphs; it is therefore ben...
In the performance of a transvascular liver biopsy, the Trucut-type transjugular liver biopsy set is advance over a multipurpose catheter place in the suprahepatic vein. Occasionally there is a sharp bend between the suprahepatic veins and the inferior vein cava and the multipurpose catheter does not provide sufficient support to track the biopsy access set. To deal with this problem we describ...
In the early embryo the allantois, which lies in the body stalk, is situated at the hind end of the foetus and is at first meirely a continuation of the hind gut. As growth proceeds, the hind end of the embryo assumes a curvature and the allantois and body stalk are displaced ventrally. The differentiation of the allantois and hind gut is now easy to see and the sharp bend between the two becom...
Abstract An open channel flume with a central 180-degree bend rigid bed is designed to obtain better understanding of the complex flow pattern around T-shaped spur dike located in sharp bend. The 3-dimensional velocities are measured by using an acoustic Doppler velocimetry under clear-water conditions. This study’s primary objective compare variations mean along variety lengths. In order do so...
One of the essential building-blocks of miniature photonic crystal (PC)-based photonic integrated circuits (PICs) is the sharp bend. Our group has focused on the 2-D photonic crystal based on a triangular lattice of holes perforating a standard heterostructure. The latter, GaAlAs-based or InP-based, is vertically a monomode waveguide. We consider essentially one or two 60 bends defined by one t...
We present a novel method to fabricate low bend loss femtosecond-laser written waveguides that exploits the differential thermal stabilities of laser induced refractive index modifications. The technique consists of a two-step process; the first involves fabricating large multimode waveguides, while the second step consists of a thermal post-annealing process, which erases the outer ring of the...
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