Results 21 to 30 of about 18,895 (218)

Pressure dependence of the Verwey transition in magnetite: an infrared spectroscopic point of view [PDF]

open access: yes, 2012
We investigated the electronic and vibrational properties of magnetite at temperatures from 300 K down to 10 K and for pressures up to 10 GPa by far-infrared reflectivity measurements.
Baldassarre, L.   +5 more
core   +3 more sources

Periodic solution for nonlinear vibration of a fluid-conveying carbon nanotube, based on the nonlocal continuum theory by energy balance method [PDF]

open access: yes, 2012
A nonlinear model is developed for the vibration of a single-walled carbon nanotube (SWCNT) based on Eringen’s nonlocal elasticity theory. The nanotube is assumed to be embedded in a Pasternak-type foundation with simply supported boundary conditions ...
A. Farshidianfar   +76 more
core   +1 more source

Vibration Analysis of a Sandwich Plate with Laminated Face and Porous Core Layers Resting on Elastic Foundation Abstract

open access: yesJournal of Innovative Science and Engineering, 2022
In this study, free vibration responses of a sandwich plate resting on Winkler-Pasternak foundation are investigated by using the first order shear deformation plate theory.
Yusuf Ziya Yuksel   +1 more
doaj   +1 more source

An Extension of the Pasternak Foundation Concept

open access: yesSoils and Foundations, 1985
ABSTRACT The Pasternak Foundation concept, a refinement of the Winkler Foundation theory, is briefly stated and its shortcomings pointed out. The [concept is extended to take into account material nonlinearity and body forces using an analytical approach.
H.B. Poorooshasb   +2 more
openaire   +2 more sources

The thermal and Pasternak foundation effect on the transient behaviors of the rectangular plate using a novel semi-analytical method

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
This paper carries out the transient behaviors of a thin rectangular plate considering different boundary conditions, Pasternak foundation, and thermal environment simultaneously.
Xu Liang   +5 more
doaj   +1 more source

Static Analysis of Isotropic Beams Resting on Elastic Foundations of the Winkler-Pasternak Type

open access: yesVetor, 2023
Beams resting on elastic foundations are widely used in engineering projects, so analyzing their displacement fields is very important. The present work presents solutions for the deflection of isotropic beams resting on elastic foundations of the ...
Larissa Oliveira Santos   +2 more
doaj   +1 more source

7‑hydroxymitragynine is an active metabolite of mitragynine and a key mediator of its analgesic effects [PDF]

open access: yes, 2019
Mitragynina speciosa, more commonly known as kratom, is a plant native to Southeast Asia, the leaves of which have been used traditionally as a stimulant, analgesic, and treatment for opioid addiction.
Ansonoff, Michael   +12 more
core   +3 more sources

Size-Dependent Free Vibrations of FG Polymer Composite Curved Nanobeams Reinforced with Graphene Nanoplatelets Resting on Pasternak Foundations

open access: yesApplied Sciences, 2019
This paper presents a free vibration analysis of functionally graded (FG) polymer composite curved nanobeams reinforced with graphene nanoplatelets resting on a Pasternak foundation.
Mohammad Arefi   +4 more
doaj   +1 more source

Hydroelastic oscillation of a plate resting on Pasternak foundation [PDF]

open access: yesVibroengineering Procedia, 2017
The bending oscillations of the plate, resting in Pasternak foundation and interacting with a vibrating stamp through a thin layer of viscous incompressible liquid, are investigated. On the basis of hydroelasticity problem solution, the laws of the plate deflections and pressure in the liquid are found.
Dmitry V. Kondratov   +3 more
openaire   +1 more source

Thermo-Mechanical Vibration of Short Carbon Nanotubes Embedded in Pasternak Foundation Based on Nonlocal Elasticity Theory

open access: yesShock and Vibration, 2013
This study is concerned with the thermal vibration analysis of a short single-walled carbon nanotube embedded in an elastic medium based on nonlocal Timoshenko beam model.
B. Amirian, R. Hosseini-Ara, H. Moosavi
doaj   +1 more source

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