Results 61 to 70 of about 8,939,787 (291)

A Biofabricated Human Acinus‐on‐a‐Chip Unveils Mechanotransductive Drivers of Ventilator‐Induced Lung Injury via Decoupling Volutrauma and Barotrauma

Advanced Science, EarlyView.
This bioinspired acinus‐on‐a‐chip recapitulates VILI pathology, revealing that volutrauma drives P53/NF‐κB pathways while barotrauma triggers mitochondrial‐Wnt dysregulation. A fibrotic transitional cell cluster was identified. Pharmacological interventions targeting these pathways significantly ameliorated injury, establishing a mechanobiological ...
Heng Lu, Liansheng Liu, Zengyong Hu, Shuxian Fang, Ruohan Ren, Sidi Liu, Meng Zhao, Zhiting Luo, Ziyue Zhang, Wenlong Shao, Qian Liu   +10 more
wiley   +1 more source

An Explanation of the Poleward Mass Flux in the Stratosphere

Atmosphere
This paper offers a new perspective on the explanation of the poleward mass flux in the stratosphere. This mass flux represents the upper leg of the so-called Brewer–Dobson circulation. This new perspective is based on the following hypothesis.
Aarnout J. van Delden
doaj   +1 more source

Seasonal variability of the potential vorticity in the Lofoten vortex

Russian Journal of Earth Sciences, 2022
The anticyclonic quasi-permanent Lofoten vortex is a strong dynamic formation in the center of the Lofoten Basin in the Norwegian Sea. We used the oceanic reanalysis data GLORYS12V1.
Novoselova Elena
doaj   +1 more source

Tracers and Potential Vorticities in Ocean Dynamics

Journal of Physical Oceanography, 2002
Abstract The Ertel potential vorticity theorem for stratified viscous fluids in a rotating system is analyzed herein. A set of “tracers,” that is, materially conserved scalar quantities, and the corresponding Ertel potential vorticities are used to obtain an absolute fluid velocity determination (including both horizontal and vertical components) that ...
Kurgansky, M. V., Ssalusti, E., BUDILLON, Giorgio   +2 more
openaire   +2 more sources

Amphibious Movement of Microrobots Inspired by Water Spiders

Advanced Science, EarlyView.
Inspired by the water strider, a novel microrobot is designed to maintain amphibious mobility in complex environments. It retains the ability to traverse the air‐liquid interface and perform directional movement within sophisticated, multifaceted environments, including complex gastric wall structures, with precise controllability.
Xiao Hu, Run Ouyang, Zhuhao Shi, Wanqiong Tao, Zuchao Zhu, Peifeng Lin, Jianzhong Lin, Luca Brandt   +7 more
wiley   +1 more source

Potential vorticity: A short history of its definitions and uses

Meteorologische Zeitschrift, 1997
There has, in recent years, been something of a renaissance in the use of potential vorticity to interpret atmospheric dynamics. This owes a lot to the review paper of Hoskins, McIntyre and Robertson (1985).
Alan J. Thorpe, Hans Volkert
doaj   +1 more source

Second-Order Moist Potential Vorticity in Terrain-Following Coordinate and its Application in Improving Numerical Precipitation Prediction [PDF]

Gaoyuan qixiang
For the general problem of rainstorm under complex terrain， the use of isobaric coordinates can not accurately analyze and predict the intensity and movement of mountain rainstorm due to the intersection of the lower troposphere isobaric surface and the ...
Cha YANG, Na LI, Yuntao HU, Lingkun RAN, Xingna ZHAO
doaj   +1 more source

Classification of hemispheric monthly mean stratospheric potential vorticity fields [PDF]

Annales Geophysicae, 2003
Monthly mean NCEP reanalysis potential vorticity fields at the 650 K isentropic level over the Northern and Southern Hemispheres between 1979 and 1997 were studied using multivariate analysis tools.
R. Huth, P. O. Canziani, P. O. Canziani
doaj   +1 more source

Atmospheric Circulation Patterns Associated with Extreme Precipitation Events in Eastern Siberia and Mongolia

Atmosphere, 2023
The socioeconomic impacts caused by floods in the south of Eastern Siberia (SES), and the expected increase in precipitation extremes over northern Eurasia, have revealed the need to search for atmospheric circulation patterns that cause extreme ...
Olga Antokhina, Pavel Antokhin, Alexander Gochakov, Anna Zbirannik, Timur Gazimov   +4 more
doaj   +1 more source

Shear‐Mode Direct Piezoelectric Response of Ferroelectric Nematic Liquid Crystals

Advanced Science, EarlyView.
Periodic shear‐induced electric current measurements are reported on two archetypic ferroelectric nematic liquid crystal compounds. From the temperature, frequency and shear angle dependent results of the first and second harmonic current signals together with temperature and oscillatory rheology measurements, the effective piezoelectric coupling ...
Péter Salamon, Marcell Tibor Máthé, Hiroya Nishikawa, Fumito Araoka, Antal Jákli   +4 more
wiley   +1 more source