Results 31 to 40 of about 3,588,860 (347)

Understanding of double-curvature shaped magnetoimpedance profiles in Joule-annealed and tensioned microwires at 8-12 GHz

open access: yes, 2014
We have investigated for the first time the combined effect of current and stress on the GMI characteristics of vanishing-magnetostrictive Co-rich microwires at microwave frequency.
Berzhansky, V. N.   +3 more
core   +1 more source

Electromagnetic Fields, Oxidative Stress, and Neurodegeneration [PDF]

open access: yesInternational Journal of Cell Biology, 2012
Electromagnetic fields (EMFs) originating both from both natural and manmade sources permeate our environment. As people are continuously exposed to EMFs in everyday life, it is a matter of great debate whether they can be harmful to human health.
Claudia Consales   +3 more
openaire   +3 more sources

A stress free model for residual stress assessment using thermoelastic stress analysis [PDF]

open access: yes, 2014
Thermoelastic Stress Analysis (TSA) has been proposed as a method of obtaining residual stresses. The results of a preliminary study demonstrated that when Al-2024 plate containing holes that were plastically deformed by cold expansion process to 2% and ...
Achintha, Mithila   +3 more
core   +1 more source

A phase-field method for modeling cracks with frictional contact

open access: yes, 2019
We introduce a phase-field method for continuous modeling of cracks with frictional contacts. Compared with standard discrete methods for frictional contacts, the phase-field method has two attractive features: (1) it can represent arbitrary crack ...
Choo, Jinhyun, Fei, Fan
core   +2 more sources

Full-field pulsed magneto-photoelasticity – Experimental Implementation [PDF]

open access: yes, 2006
This paper contains a description of the experimental procedure employed when using a pulsed-magneto-polariscope (PMP) and some initial full-field through-thickness measurements of the stress distribution present in samples containing 3D stresses.
Aben H. K.   +3 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Homogenization in strength and durability analysis of reinforced tooth filling [PDF]

open access: yes, 2002
An asymptotic homogenization procedure is employed to obtain effective elastic properties of the composite tooth filling, a homogenized macro– stress field and a first approximation to the micro-stress field, from properties of the components and applied
Mikhailov, SE, Orlik, J
core  

Actuated rheology of magnetic micro-swimmers suspensions : emergence of motor and brake states

open access: yes, 2018
We study the effect of magnetic field on the rheology of magnetic micro-swimmers suspensions. We use a model of a dilute suspension under simple shear and subjected to a constant magnetic field.
Clément, Eric   +2 more
core   +1 more source

f(R,T) gravity [PDF]

open access: yes, 2011
We consider f(R,T) modified theories of gravity, where the gravitational Lagrangian is given by an arbitrary function of the Ricci scalar R and of the trace of the stress-energy tensor T.
Harko, Tiberiu   +3 more
core   +2 more sources

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