Results 11 to 20 of about 1,083,914 (265)

Activation volume in superpressed glass-formers. [PDF]

open access: yesSci Rep, 2019
AbstractIn pressurized glass-forming systems, the apparent (changeable) activation volume Va(P) is the key property governing the previtreous behavior of the structural relaxation time (τ) or viscosity (η), following the Super-Barus behavior: $${\boldsymbol{\tau }}{\boldsymbol{(}}{\boldsymbol{P}}{\boldsymbol{)}}{\boldsymbol{,}}{\boldsymbol{\eta ...
Drozd-Rzoska A.
europepmc   +4 more sources

Topological Active Volumes [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
The topological active volumes (TAVs) model is a general model for 3D image segmentation. It is based on deformable models and integrates features of region-based and boundary-based segmentation techniques. Besides segmentation, it can also be used for surface reconstruction and topological analysis of the inside of detected objects. The TAV structure
Noelia Barreira, Manuel G. Penedo
openaire   +2 more sources

Active Volume Regulation in Adhered Cells [PDF]

open access: yesBiophysical Journal, 2020
Significance Living cells regulate their volume using a diverse set of mechanisms to maintain their structural and functional integrity. The most widely used mechanism to control cell volume is active ion transport. Recent experiments on adhered cells reveal that their volume is significantly reduced as their basal area is increased ...
Ram M. Adar, Samuel A. Safran
openaire   +5 more sources

Cell volume controlled by LRRC8A-formed volume-regulated anion channels fine-tunes T cell activation and function

open access: yesNature Communications, 2023
Biosynthesis drives the cell volume increase during T cell activation. However, the contribution of cell volume regulation in TCR signaling during T lymphoblast formation and its underlying mechanisms remain unclear.
Yuman Wang   +15 more
doaj   +1 more source

High-Temperature Nano-Indentation Creep of Reduced Activity High Entropy Alloys Based on 4-5-6 Elemental Palette

open access: yesEntropy, 2020
There is a strong demand for materials with inherently high creep resistance in the harsh environment of next-generation nuclear reactors. High entropy alloys have drawn intense attention in this regard due to their excellent elevated temperature ...
Maryam Sadeghilaridjani   +3 more
doaj   +1 more source

Micro and nanoparticulate PP/CaCO3 composites mechanical, thermal and transport properties - DOE [PDF]

open access: yesPolímeros
Composite based on PP/CaCO3 contained micro and nanoparticles were investigated in relation its activation volume, mechanical, thermal and transport properties.
Juliano Martins Barbosa   +5 more
doaj   +1 more source

Theoretical strength and homogeneous sliding in metallic glass: exactly solvable model

open access: yesJournal of the Mechanical Behavior of Materials, 2013
At low temperature, T→0, the yield stress of a perfect crystal is equal to its so-called theoretical strength. The yield stress of nonperfect crystals is controlled by the stress threshold of dislocation mobility.
Lazarev Nikolai, Bakai Alexander
doaj   +1 more source

large area goaf; coal spontaneous combustion; buoyancy effect; multi-field coupling; numerical simulation

open access: yesMeikuang Anquan, 2022
In order to effectively prevent and control coal spontaneous combustion disasters in Tangjiahui Mine, thermogravimetric experiments were used to analyze the thermal reaction kinetics characteristics of coal samples at different heating rates and ...
WEN Hu   +6 more
doaj   +1 more source

Pressure Dependence of Magnesite Creep

open access: yesGeosciences, 2019
We determined the activation volumes (V*) for polycrystalline magnesite with grain sizes of 2 and 80 µm deforming by low temperature plasticity (LTP) mechanisms (kinking and dislocation glide), diffusion creep, and dislocation creep at temperatures ...
Joseph W. Millard   +9 more
doaj   +1 more source

Database for Active Transportation Infrastructure and Volume [PDF]

open access: yesTransportation Research Record: Journal of the Transportation Research Board, 2015
Information about pedestrian infrastructure and volume is indispensable to monitoring, evaluating, and improving the environment for comfortable and safe walking. However, determining and organizing the various types of data in a way that is easy to update and analyze can present challenges.
Proulx, Frank R.   +2 more
openaire   +3 more sources

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