Results 21 to 30 of about 1,692,892 (304)

Ozone Pollution, Oxidative Stress, Regulatory T Cells and Antioxidants

open access: yesAntioxidants, 2022
Ozone pollution, is a serious health problem worldwide. Repeated exposure to low ozone doses causes a loss of regulation of the oxidation–reduction systems, and also induces a chronic state of oxidative stress.
Selva Rivas-Arancibia   +8 more
doaj   +1 more source

Initiation mechanism of cracks of rock in compression and shear considering T-stress

open access: yesYantu gongcheng xuebao, 2019
In the studies on the initiation mechanism of cracks of rock in compression and shear, the traditional fracture theory only considers the singular stress (r1/2 term) of the elastic stress state near a crack tip in the Williams’ series expression, and ...
LIU Hong-yan
doaj   +1 more source

Décollement geometry controls on shallow very low frequency earthquakes

open access: yesScientific Reports, 2022
Recent studies have documented the occurrence of shallow very low frequency earthquakes (VLFE) in subduction zones. The heterogeneity of the materials or stresses that act on the plate interface results in the variable slip rate.
Yoshitaka Hashimoto   +8 more
doaj   +1 more source

Fluid shear stress enhances T cell activation through Piezo1

open access: yesBMC Biology, 2022
Background T cell activation is a mechanical process as much as it is a biochemical process. In this study, we used a cone-and-plate viscometer system to treat Jurkat and primary human T cells with fluid shear stress (FSS) to enhance the activation of ...
Jacob M. Hope   +7 more
doaj   +1 more source

The role of hydrogen in hot-salt stress corrosion cracking of titanium-aluminum alloys [PDF]

open access: yes, 1971
Additional support is presented for the previously proposed role of hydrogen as an embrittling agent in hot-salt stress corrosion cracking of titanium-aluminum alloys.
Ondrejcin, R. S.
core   +3 more sources

Effect of load sequence interaction on bond-wire lifetime due to power cycling

open access: yesScientific Reports, 2021
Experimental investigations on the effects of load sequence on degradations of bond-wire contacts of Insulated Gate Bipolar Transistors power modules are reported in this paper.
Zoubir Khatir   +4 more
doaj   +1 more source

Wedge splitting test: Displacement field analysis by multi-parameter fracture mechanics [PDF]

open access: yes, 2018
Multi-parameter fracture mechanics is nowadays quite extensively applied when cracked structures/specimens are investigated. The reason was that it has been shown that it can be helpful and bring results that are more accurate when for describing of ...
Maliková, Lucie   +4 more
core   +1 more source

New Natural Injection-Moldable Composite Material from Sunflower Oil Cake [PDF]

open access: yes, 2006
Through a twin-screw extrusion process the native structure of sunflower oil cake was completely transformed (globular protein denaturation/texturization and husk fiber defibration) into a simpler matrix-fiber structure, as could be seen on SEM ...
A. Rouilly   +30 more
core   +2 more sources

miR200-regulated CXCL12β promotes fibroblast heterogeneity and immunosuppression in ovarian cancers

open access: yesNature Communications, 2018
Cancer-associated fibroblasts (CAFs) are an important part of the tumor microenvironment. Here the authors characterize four subsets of CAFs across human samples of ovarian cancer subtypes and show in the mesenchymal subtype a specific CAF-S1 population ...
Anne-Marie Givel   +12 more
doaj   +1 more source

T cell-intrinsic integrated stress response: friend, foe, or frill? [PDF]

open access: yesJournal of the National Cancer Center
Si Lu, Chenghang Zhao, Yuxiong Feng
doaj   +2 more sources

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