Results 71 to 80 of about 670,121 (313)

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Continuum Damage-Healing Mechanics with Introduction to New Healing Variables

open access: yes, 2012
In this study, damage and healing mechanisms are discussed in detail with special emphasis given on two new healing variables. They are introduced in terms of healing variable based on area and healing variable based on elastic stiffness.
George Voyiadjis
core   +1 more source

A thermodynamically consistent derivation of a frictional-damage cohesive-zone model with different mode i and mode II fracture energies [PDF]

open access: yes, 2015
The present paper deals with the derivation of an interface model characterized by macroscopic fracture energies which are different in modes I and II, the macroscopic fracture energy being the total energy dissipated per unit of fracture area.
Serpieri, R   +3 more
core   +1 more source

Uniaxial accelerated creep constitutive model of rock considering damage and hardening

open access: yesShuiwen dizhi gongcheng dizhi
In view of the lack of understanding and description of nonlinear characteristics and accelerated creep deformation law in current rock creep research, and the difficulty of existing models to fully reflect the coupling effect of damage and hardening in ...
Yingbo LI, Wenbo LIU, Shuguang ZHANG
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

On an isotropic damage mechanics model for ductile materials

open access: yes, 2022
S.325-346A new model for combined elastoplasticity and damage is proposed. The model is based on the maximum dissipation principle and implements a strong coupling between plasticity and damage.
Hesebeck, O.
core  

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Sandstone damage and acoustic emission characteristics under the cyclic loading and unloading of the intermediate principal stress of the true three-axis

open access: yesMeitan xuebao
The work aimed to study the damage and acoustic emission (AE) characteristics of sandstone under the cyclic disturbance stress during underground engineering excavation.
Chaotao FAN   +6 more
doaj   +1 more source

Reaction Time Variability in Epileptic and Brain-Damaged Patients

open access: yesCortex, 1977
Median reaction times and intra-individual variability were studied in epileptic (N = 63), brain-damaged (non-epileptic) (N = 25) and control patients (N = 25) using a six and one half minute visual, continuous reaction time task. Epileptic and brain-damaged groups were significantly slower than control patients on median reaction times at the 10th ...
P, Bruhn, O A, Parsons
openaire   +2 more sources

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

open access: yesFEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz   +11 more
wiley   +1 more source

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