Results 21 to 30 of about 13,470,362 (342)

Caspase-8 and Caspase-9 Functioned Differently at Different Stages of the Cyclic Stretch-Induced Apoptosis in Human Periodontal Ligament Cells. [PDF]

open access: yesPLoS ONE, 2016
Human periodontal ligament (PDL) cells underwent apoptosis after mechanical stretch loading. However, the exact signalling pathway remains unknown.
Yaqin Wu   +4 more
doaj   +1 more source

Extinction characteristics of ammonia/air counterflow premixed flames at various pressures

open access: yesJournal of Thermal Science and Technology, 2016
Ammonia has promising features as a carbon-free fuel without greenhouse gas emission. However, due to its low combustion intensity, the combustion characteristics of ammonia have been rarely investigated.
Sophie COLSON   +3 more
doaj   +1 more source

MAPK activation modulates permeability of isolated rat alveolar epithelial cell monolayers following cyclic stretch. [PDF]

open access: yesPLoS ONE, 2010
We cultured (5 days) rat alveolar epithelial cells to investigate the role of mitogen-activated protein kinase (MAPk) signaling in ventilator induced epithelial barrier dysfunction. Cells were stretched to a magnitude of 12% or 37% change in surface area
Taylor S Cohen   +3 more
doaj   +1 more source

The effects of flame orientation and mean shear on flame stretch in highly turbulent premixed flames using DNS

open access: yesApplications in Energy and Combustion Science, 2022
In the present work, direct numerical simulation data of a laboratory-scale high Karlovitz number (Ka) jet flame with a strong mean shear and a high Ka freely propagating planar flame without a mean shear were analyzed to explore the influence of flame ...
Tingquan Tian   +3 more
doaj   +1 more source

Stretch Rate and Displacement Speed Correlations for Increasingly-Turbulent Premixed Flames

open access: yesFlow Turbulence and Combustion, 2018
Probability density functions of the components of stretch rate are investigated using a previously-published Direct Numerical Simulation dataset spanning a range of turbulence intensities in the Thin Reaction Zones (TRZ) regime.
G. Nivarti, R. Cant
semanticscholar   +1 more source

The Ages of Type Ia Supernova Progenitors [PDF]

open access: yes, 2010
Using light curves and host galaxy spectra of 101 Type Ia supernovae (SNe Ia) with redshift $z \lesssim 0.3$ from the SDSS Supernova Survey (SDSS-SN), we derive the SN Ia rate as a function of progenitor age (the delay time distribution, or DTD).
Aubourg, Éric   +5 more
core   +2 more sources

Stretching of polymers in a turbulent environment [PDF]

open access: yes, 2002
The interaction of polymers with small-scale velocity gradients can trigger a coil-stretch transition in the polymers. We analyze this transition within a direct numerical simulation of shear turbulence with an Oldroyd-B model for the polymer.
Balkovsky   +24 more
core   +1 more source

Detection of stretch reflex onset based on empirical mode decomposition and modified sample entropy

open access: yesBMC Biomedical Engineering, 2019
Background Accurate spasticity assessment provides an objective evaluation index for the rehabilitation treatment of patients with spasticity, and the key is detecting stretch reflex onset.
Mingjia Du   +5 more
doaj   +1 more source

Context-Aware Image Compression. [PDF]

open access: yesPLoS ONE, 2016
We describe a physics-based data compression method inspired by the photonic time stretch wherein information-rich portions of the data are dilated in a process that emulates the effect of group velocity dispersion on temporal signals.
Jacky C K Chan   +3 more
doaj   +1 more source

Stretching rates and equivalent length near the tropopause [PDF]

open access: yesJournal of Geophysical Research: Atmospheres, 2003
Diagnostics of mixing in the upper troposphere/lower stratosphere region reveal interesting seasonal and interannual variability and illustrate how the subtropical tropopause can be identified with a region of minimum mixing, a partial barrier to the transport of air between the troposphere and stratosphere.
Scott, R.-K.   +3 more
openaire   +3 more sources

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