Results 21 to 30 of about 6,657,880 (307)

Fatigue Crack Propagation Study of Bridge Steel Q345qD Based on XFEM Considering the Influence of the Stress Ratio

open access: yesApplied Sciences, 2022
In the past, fatigue cracks have appeared in the orthotropic steel decks of bridges shortly after they opened to traffic. Previous studies have shown that high tensile welding residual stress exists in welded joints of steel bridges, which significantly ...
Baoya Cao   +4 more
doaj   +1 more source

Kynurenine to tryptophan ratio as a biomarker of acute stress in fish [PDF]

open access: yesChemosphere, 2022
The aim of this study was to determine the kynurenine (KYN) to tryptophan (TRP) ratio (KTR) in fish tissue to assess its usefulness as a biomarker of acute stress. Laboratory held rainbow trout (Oncorhynchus mykiss) were subjected to an acute stressor and KYN, TRP and cortisol were measured in liver and brain tissues at 4- and 48-h post-stress.
Jade Wish   +9 more
openaire   +2 more sources

Research on mechanical behaviour and determination method for shear strength of colluvial deposit in large-scale direct shear tests

open access: yesMeitan kexue jishu, 2023
In order to master the mechanical strength characteristics of the colluvial deposit and the influence of water content on it,a typical loose colluvial deposit of landslide in southwest China was taken as a research object.
Qiangqiang JIANG   +3 more
doaj   +1 more source

Lipopolysaccharide, high glucose and saturated fatty acids induce endoplasmic reticulum stress in cultured primary human adipocytes : salicylate alleviates this stress [PDF]

open access: yes, 2010
Recent findings indicate that endoplasmic reticulum (ER) stress is significantly increased in adipose tissue of obese human subjects and is critical to the initiation and integration of pathways of inflammation and insulin action.
Saif Alhusaini   +18 more
core   +1 more source

Low R/FR Ratio Affects Pakchoi’s Growth and Nitrate Content under Excess Nitrate Stress

open access: yes, 2022
Nitrate accumulation is one of the main factors of secondary soil salinization in protected horticulture in China. Previous studies have shown that a low red(R)/far-red (FR) ratio can improve the salt tolerance of plants under NaCl stress.
Qinglin Liu   +10 more
core   +1 more source

Prediction of Fatigue Cracks Using Gamma Function

open access: yesFatigue of Aircraft Structures, 2023
In the present study it has been endeavored to estimate the fatigue crack propagation in V-notch Charpy specimens of 2024 T351 Al-alloy. For this purpose, a new application of fatigue crack growth (FCG) is developed based on the “Gamma function ...
Moussouni Abdelfetah   +2 more
doaj   +1 more source

Fatigue Design of Steel Bridge Deck Asphalt Pavement Based on Nonlinear Damage Accumulation Theory

open access: yesApplied Sciences, 2021
Based on the nonlinear damage theory, this paper aims to explore the fatigue performance of steel bridge deck asphalt pavement under multistage fatigue load.
Xunqian Xu   +5 more
doaj   +1 more source

Numerical Simulation on Change of Equivalent Permeability of Coal Rock Under Different Stress Ratios

open access: yesMeikuang Anquan, 2020
We describe the mechanics characteristic of the coal rock by adopting B-B failure criteria. Moreover, we study the crack evolution rule of coal rock, the internal flow distribution of coal rock and the equivalent permeability of coal rock under ...
LI Huigui, GAO Baobin, WANG Honglei, LI Huamin
doaj   +1 more source

Effects of cyclic loading on lateral bearing capacity of single pile in silty seabed

open access: yesYantu gongcheng xuebao
Under larger wave loading, the bearing capacity of marine single pile foundation will be reduced, even instability occurs. A series of undrained shear triaxial tests on the remolded marine silt in Hangzhou Bay are carried out by means of the GDS triaxial
WANG Mingyuan 1, SUN Jizhu 2, WANG Yong 3, YANG Yang 4
doaj   +1 more source

Stress-deformation characteristics of silty soil based on K0 consolidation and drainage unloading stress path tests

open access: yesYantu gongcheng xuebao, 2017
Based on different initial stress states and unloading stress ratios, the unloading stress path drainage tests under K0 consolidation are carried out on the silty clay sampled from the construction site of the South-to-North Water Diversion Project.
ZHANG Kun-yong 1, 2, LI Guang-shan 1, 2, MEI Xiao-hong 3, DU Wei 1, 2
doaj   +1 more source

Home - About - Disclaimer - Privacy