Results 21 to 30 of about 3,048,656 (303)

The male to female ratio at birth [PDF]

open access: yes, 2014
The factors that influence the male to female ratio at birth are legion. Males are usually born in excess and stress decreases the ratio while wellbeing and good health tends to increase it.
Grech, Victor E., Mamo, Julian
core   +1 more source

Stress detection from EEG using power ratio [PDF]

open access: yes2020 International Conference on Emerging Trends in Information Technology and Engineering (ic-ETITE), 2020
Stress correlates itself as a mental conscious and emotion within a person that influences mental ability and decision-making skills, which results in an inappropriate work. Studies have recently developed to detect the stress in a person while performing different tasks. One of the methods is through Electroencephalograph (EEG).
Taruv Harshita Priya   +3 more
openaire   +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

Very High Cycle Fatigue Behavior of TA11 Titanium Alloy

open access: yesJournal of Aeronautical Materials, 2017
The conventional fatigue test method was used to obtain the very high cycle fatigue (VHCF) limits of 3×107 and 1×108 cycles for TA11 titanium alloy in different temperatures and stress ratios.
JIAO Zehui   +4 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

Prediction of Fatigue Limit of Spring Steel Considering Surface Defect Size and Stress Ratio

open access: yesMetals, 2021
Surface defects decrease the fatigue limit of metals. In this study, the effects of surface defects on the fatigue limit of high-strength spring steel specimens were investigated.
Takehiro Ishii, Koji Takahashi
doaj   +1 more source

Melatonin attenuates oxidative stress and modulates inflammatory response after experimental burn trauma [PDF]

open access: yes, 2018
Introduction. Thermal injury activates an inflammatory response. Melatonin possesses anti-oxidant and anti-inflammatory properties. The objective of the present work was to study melatonin effects on the inflammatory response under ...
Atanasova, Milena   +3 more
core   +3 more sources

Seismic hazard assessment using apparent stress ratio [PDF]

open access: yesProceedings of the International Seminar on Design Methods in Underground Mining, 2015
Seismically active operations require special considerations for design and mining practices in order to mitigate the risk associated with large and potentially damaging seismic events. When detailed knowledge of the local rock mass conditions and the historical seismic response is considered during mine design, costly rehabilitation and time delays ...
Laura Brown   +2 more
openaire   +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

Effect of Stress Ratio and Evaluation of Crack Sizes on Very-High-Cycle-Fatigue Crack Propagation Life Prediction of Carburized Cr-Ni Steel

open access: yesMetals, 2022
Carburized Cr-Ni steel is widely used in the manufacture of components in many fields due to excellent performance, of which the service life has been a concern.
Yupeng Guo   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy