Results 171 to 180 of about 25,749,470 (253)

On vibrations of functionally graded viscoelastic nanobeams with surface effects

International Journal of Engineering Science, 2018
This paper addresses the size-dependent free vibration of functionally graded viscoelastic (FGV) nanobeams including the simultaneous effects of the microstructure rotation and surface energy for the first time. Employing the Bernoulli–Euler beam theory,
M. Attia, A. A. Abdel Rahman
semanticscholar   +1 more source

Nonlocal, strain gradient and surface effects on vibration and instability of nanotubes conveying nanoflow

Mechanics of Advanced Materials and Structures, 2018
In this paper, the size-dependent vibration and instability of nanoflow-conveying nanotubes with surface effects using nonlocal strain gradient theory (NSGT) are examined.
M. Atashafrooz, R. Bahaadini, H. Sheibani   +2 more
semanticscholar   +1 more source

Effects of nanoscale surface corrugation on surface-to-surface effective potential

Microfluidics and Nanofluidics, 2012
In this paper, we present a systematic statistical mechanical study of a solvent-mediated interaction potential (SMIP) between two substrate surfaces patterned with nanoscale corrugations. The investigation reveals that various parameters of periodic corrugations as of period, amplitude, and phase difference provide us with a simple means of tuning the
openaire   +1 more source

The whispering surface effect

Journal of Applied Mathematics and Mechanics, 1999
The author studies the waveguide properties of one-dimensional periodic surfaces and interfaces. It is established that all surfaces, on which the Neyman condition is satisfied, possess the wave property, namely, they are waveguides. The existence of a region of missing the frequences localized in zero neighbourhood is called the phenomenon of ...
openaire   +2 more sources

Surface States, Surface Effects

1995
It has been stated already that PES, because of the small escape depth of the electrons in a solid, in principle, is a surface sensitive technique. However, the agreement found in the preceding chapter between calculated and experimental bulk band structures was remarkable.
openaire   +1 more source

The Surface Photoelectric Effect

Physical Review, 1949
An expression is derived for the photoelectric current produced at the surface of a metal, the conduction electrons being supposed free and the potential barrier of arbitrary shape. The validity of the common assumption that the current arising from conduction electrons of a particular momentum can be expressed as the product of an excitation function ...
openaire   +2 more sources

Effect of surface tension on alveolar surface area

Journal of Applied Physiology, 2002
At fixed lung volume (Vl), alterations in surface tension change alveolar surface area (S) and lung recoil (Pl). Wilson (26), using data from fixed lungs (1, 9), quantified the isovolume change in S with Pl. We reexamined this question in fresh excised rabbit lungs, with two important differences.
James P, Butler, Richard E, Brown, Dimitrije, Stamenović, John P, Morris, George P, Topulos   +4 more
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Surface dyslexia: A regression effect?

Brain and Language, 1985
Although the disorder of acquired surface dyslexia is considered as a pathological syndrome in the psycholinguistic and neuropsychological literature, it may also be conceived of as part of a general regression in functioning consequent upon brain damage.
M, Prior, M, McCorriston
openaire   +2 more sources

Surface effects in sulphidation reactions

Canadian Metallurgical Quarterly, 1990
AbstractPure iron and an Fe–41 wt% Ni alloy are reacted at temperatures in the range 793–1073 K with H2–H2S–N2 atmospheres corresponding to equilibrium P S2 levels from 6.5 × 10−5 to 0.65 Pat The kinetics of iron sulfidation are intermediate in form to linear and parabolic rate laws.
D. J. Young, J. P. Orchard
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Surface effects in invasion percolation

Physical Review E, 1997
Boundary effects for invasion percolation are introduced and discussed here. The presence of boundaries determines a set of critical exponents characteristic of the boundary. In this paper we present numerical simulations showing a remarkably different fractal dimension for the region of the percolating cluster near the boundary.
Raffaele Cafiero, Guido Caldarelli, Andrea Gabrielli   +2 more
openaire   +5 more sources