Results 21 to 30 of about 233,575 (267)

A New Unified Solution for Circular Tunnel Based on a Four-Stage Constitutive Model considering the Intermediate Principal Stress

Advances in Civil Engineering, 2018
Based on the triaxial test, the elasto-perfectly plastic strain-softening damage model (EPSDM) is proposed as a new four-stage constitutive model. Compared with traditional models, such as the elasto-brittle-plastic model (EBM), elasto-strain-softening ...
Liang Chen, Xianbiao Mao, Yanlong Chen, Ming Li, Yang Hao, Ding Liu   +5 more
doaj   +1 more source

Why is local stress statistics normal, and strain lognormal?

Materials & Design, 2021
In the present study we elucidate the nature of local strain statistics evolution during tensile deformation in polycrystalline materials. A rate-independent formulation was implemented within a crystal plasticity framework by the means of representative
Jingwei Chen, Alexander M. Korsunsky
doaj   +1 more source

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

FEBS 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

A Study on Sandstone Damage Model Based on the Correlation Between Energy Dissipation and Plastic Strain

Applied Sciences
The process of rock damage and failure is accompanied by the dissipation of energy and an increase in plastic strain. This study attempts to determine the relationship between dissipated energy and plastic strain in sandstone during the damage and ...
Tianbai Zhou, Xiaoyu Zhang, Yongbo Cai, Long Wang, Qixian Li   +4 more
doaj   +1 more source

Detection of plastic strain using GNSS data of pre- and post-seismic deformation of the 2011 Tohoku-oki earthquake

Earth, Planets and Space, 2020
In general, there are three mechanisms causing crustal deformation: elastic, viscous, and plastic deformation. The separation of observed crustal deformation to each component has been a challenging problem.
Yukitoshi Fukahata, Angela Meneses-Gutierrez, Takeshi Sagiya   +2 more
doaj   +1 more source

What is behind the plastic strain rate? [PDF]

Rheologica Acta, 2009
Rheologica Acta, 48 (7)
Hütter, Markus, Grmela, Miroslav, Öttinger, Hans Christian; id_orcid0000-0003-0096-3176   +2 more
openaire   +3 more sources

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Research on the Accumulated Plastic Strain of Expansive Soil under Subway Loading

Applied Sciences, 2023
Expansive soil near Hefei Xinqiao International Airport was selected as the research focus. The effects of different loading modes on the dynamic strain of the saturated remodeled expansive soil was investigated by indoor dynamic triaxial tests and the ...
Lei Zhu, Ying Guo, Gan Cheng, Xiangyang Liu   +3 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

The effect of pre-strain on micro-scale strain concentration of austenitic stainless steel (Investigation using digital image correlation method)

Nihon Kikai Gakkai ronbunshu
It is difficult to predict the earthquake loading so the effect of pre-strain on fatigue strength was required to investigate. Especially, surface shape was changed when large plastic strain was applied.
Shota HASUNUMA, Shinji NISHIO, Tomoyuki HAYASE   +2 more
doaj   +1 more source