نتایج جستجو برای: stepped tube
تعداد نتایج: 101757 فیلتر نتایج به سال:
We report results from a computational study of laterally tethered nanorod "shape amphiphiles". Our simulations predict that the model nanorods self-assemble into stepped-ribbon-like micelles, a centered rectangular stepped-ribbon phase, and two structurally different liquid crystalline bilayer phases: one in which the bilayers have C(mm) symmetry and another in which they have P(2) symmetry. W...
Stepped chute flows are characterised by intense turbulence and strong flow aeration (Fig. 1), but most studies did not investigate the turbulence characteristics. Detailed air-water flow properties were measured in skimming flow on a stepped chute (θ = 16o, h = 0.05 m). Longitudinal oscillations of depth-averaged flow properties were observed with a wave length of about two step cavity lengths...
We have used scanning tunneling microscopy to study Si~113! 0.2° misoriented towards @11̄0#. Rapid quenching of this surface from 1500–1575 K to room temperature results in a uniformly stepped single-domain surface, whereas slower cooling gives rise to clustering of steps. The thermally induced step wandering and the terrace width distribution of the uniformly stepped surface are analyzed in ord...
The symmetry-induced magnetic anisotropy due to monoatomic steps at strained Ni films is determined using results of first principles relativistic full-potential linearized augmented plane wave (FLAPW) calculations and an analogy with the Néel model. We show that there is a magnetoelastic anisotropy contribution to the uniaxial magnetic anisotropy energy in the vicinal plane of a stepped surfac...
The adsorption and the catalytic decomposition of NO on Pt and P.u field emitter surfaces has been studied by pulsed field desorption mass spectrometry (PFDMS). A molecular adsorption of NO vas found on stepped Pt(lll) and (001) surfaces in the absence of electrostatic fields. From the temperature dependence of the nean lifetimes before thermal desorption an activation energy Ed= 153 kJ/ral and...
Despite the short-term success of professional behavioural techniques for obesity, weight losses are typically regained following treatment. The long-term maintenance of treatment effects will probably require ongoing, continuing care. Continuing care may be economically feasible when administered through self-help treatment modalities. Self-help confers a number of psychological benefits, such...
Printing electronic components on a chip edge and a stepped substrate with functional inks are an attractive approach for achieving flexible and inexpensive circuits for applications such as flexible displays and large-area chemo/bio/radioactivity sensors. However, it is still challenging because a sufficient cover of the 100 μm high step at the chip edge with a high-resolution pattern is the h...
Isocontours (also isopleths, isolines, level sets) are commonly used to visualize real-valued data defined over a 2D plane according to a set of given isovalues. To support the 3D landscape metaphor for information visualization, a 3D stepped terrain can be derived by lifting and extruding isolines to their particular isovalue, but typically requires triangulation of the resulting surface repre...
In this work the invariant imbedding method has been used to develop an algorithm to study the torsional vibration of non-uniform systems. The algorithm is based on the propagation, reflection, and transmission of waves in a stepped waveguide and is part of a procedure to transform two-point boundary value problems in initial value problems. Based on this approach, a continuous model has been d...
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