Results 31 to 40 of about 266,441 (244)

The Influence of Couple Stress Components and Electrostatic Actuation on Free Vibration Characteristics of Thin Micro-Plates

open access: yesMATEC Web of Conferences, 2016
The present paper deals specifically with the frequently asked question of are there any differences between classical non-actuated mode-shapes of plate-type MEMS and the electrically deformed ones obtained by the non-classical modified couple stress ...
Askari Amir R., Tahani Masoud
doaj   +1 more source

Beyond the Cosmological Standard Model [PDF]

open access: yes, 2014
After a decade and a half of research motivated by the accelerating universe, theory and experiment have a reached a certain level of maturity. The development of theoretical models beyond \Lambda, or smooth dark energy, often called modified gravity ...
Jain, Bhuvnesh   +3 more
core   +1 more source

Investigating of size-dependent buckling and instability caused by support forces and electrostatic field in porous annular microplates [PDF]

open access: yesمهندسی مکانیک شریف
In this paper, the static behavior, instability and buckling in porous micro plates under electrostatic field are investigated based on the modified couple stress theory and with regard to modeling, determining equations and solution methods.
Mahdi Mojahedi   +2 more
doaj   +1 more source

Thermodynamically consistent gradient elasticity with an internal variable

open access: yes, 2020
The role of thermodynamics in continuum mechanics and the derivation of the proper constitutive relations is a discussed subject of Rational Mechanics. The classical literature did not use the accumulated knowledge of thermostatics and was very critical ...
Ván, Peter
core   +1 more source

Influence of Electric Charge and Modified Gravity on Density Irregularities [PDF]

open access: yes, 2016
This work aims to identify some inhomogeneity factors for plane symmetric topology with anisotropic and dissipative fluid under the effects of both electromagnetic field as well as Palatini $f(R)$ gravity.
Bhatti, M. Zaeem Ul Haq, Yousaf, Z.
core   +2 more sources

Vibration Characteristics of Piezoelectric Microbeams Based on the Modified Couple Stress Theory

open access: yesShock and Vibration, 2014
The vibration behavior of piezoelectric microbeams is studied on the basis of the modified couple stress theory. The governing equations of motion and boundary conditions for the Euler-Bernoulli and Timoshenko beam models are derived using Hamilton’s ...
R. Ansari   +2 more
doaj   +1 more source

NEURINGER-ROSEINWEIG MODEL BASED LONGITUDINALLY ROUGH POROUS CIRCULAR STEPPED PLATES IN THE EXISTENCE OF COUPLE STRESS

open access: yesActa Polytechnica, 2020
This study intents to scrutinize the impact of ferrofluid in the presence of couple stress for longitudinally rough porous circular stepped plates. The influence of longitudinal surface roughness is developed using the stochastic model of Christensen and
Yoginibahen Devendrasinh Vashi   +2 more
doaj   +1 more source

Product CFTs, gravitational cloning, massive gravitons and the space of gravitational duals [PDF]

open access: yes, 2006
The question of graviton cloning in the context of the bulk/boundary correspondence is considered. It is shown that multi-graviton theories can be obtained from products of large-N CFTs. No more than one interacting massless graviton is possible.
  +19 more
core   +2 more sources

On some fundamental misunderstandings in the indeterminate couple stress model. A comment on recent papers of A.R. Hadjesfandiari and G.F. Dargush

open access: yes, 2015
In a series of papers which are either published [A.R. Hadjesfandiari and G.F. Dargush, Couple stress theory for solids, Int. J. Solids Struct. 48, 2496-2510, 2011; A.R. Hadjesfandiari and G.F.
Ghiba, Ionel-Dumitrel   +3 more
core   +2 more sources

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

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