Results 11 to 20 of about 1,142,459 (166)

Flow Stress of bcc Metals over a Wide Range of Temperature and Strain Rates

Metals, 2020
A physical-based model for the flow stress of bcc metals is presented. Here, thermally activated and viscous drag regimes are considered. For the thermally activated component of the flow stress, the diffusion-controlled regime at elevated temperature is
Gabriel Testa, Nicola Bonora, Andrew Ruggiero, Gianluca Iannitti   +3 more
doaj   +1 more source

Experimental study on effect of oxygen volume fraction on spontaneous combustion characteristics of coal

Meikuang Anquan, 2023
In order to study the effect of oxygen volume fraction on the spontaneous combustion of coal oxidation at low temperature, the non-adhering coal from a mine in Inner Mongolia was taken as the research object.
DING Xuqin, ZHANG Leilin
doaj   +1 more source

High-Temperature Nano-Indentation Creep of Reduced Activity High Entropy Alloys Based on 4-5-6 Elemental Palette

Entropy, 2020
There is a strong demand for materials with inherently high creep resistance in the harsh environment of next-generation nuclear reactors. High entropy alloys have drawn intense attention in this regard due to their excellent elevated temperature ...
Maryam Sadeghilaridjani, Saideep Muskeri, Mayur Pole, Sundeep Mukherjee   +3 more
doaj   +1 more source

On the Size Effect of Strain Rate Sensitivity and Activation Volume for Face-Centered Cubic Materials: A Scaling Law

Crystals, 2020
In a recent experimental study of indentation creep, the strain rate sensitivity (SRS) and activation volume v* have been noticed to be dependent on the indentation depth or loading force for face-centered cubic materials.
Xiazi Xiao, Hao Liu, Long Yu
doaj   +1 more source

Cell volume controlled by LRRC8A-formed volume-regulated anion channels fine-tunes T cell activation and function

Nature Communications, 2023
Biosynthesis drives the cell volume increase during T cell activation. However, the contribution of cell volume regulation in TCR signaling during T lymphoblast formation and its underlying mechanisms remain unclear.
Yuman Wang, Zaiqiao Sun, Jieming Ping, Jianlong Tang, Boxiao He, Teding Chang, Qian Zhou, Shijie Yuan, Zhaohui Tang, Xin Li, Yan Lu, Ran He, Ximiao He, Zheng Liu, Lei Yin, Ning Wu   +15 more
doaj   +1 more source

Micro and nanoparticulate PP/CaCO3 composites mechanical, thermal and transport properties - DOE [PDF]

Polímeros
Composite based on PP/CaCO3 contained micro and nanoparticles were investigated in relation its activation volume, mechanical, thermal and transport properties.
Juliano Martins Barbosa, Caroline Valadão Pacheco, Gisele Szilágyi, Patrícia Candioto de Oliveira, Renato Meneghetti Peres, Hélio Ribeiro   +5 more
doaj   +1 more source

Theoretical strength and homogeneous sliding in metallic glass: exactly solvable model

Journal of the Mechanical Behavior of Materials, 2013
At low temperature, T→0, the yield stress of a perfect crystal is equal to its so-called theoretical strength. The yield stress of nonperfect crystals is controlled by the stress threshold of dislocation mobility.
Lazarev Nikolai, Bakai Alexander
doaj   +1 more source

large area goaf; coal spontaneous combustion; buoyancy effect; multi-field coupling; numerical simulation

Meikuang Anquan, 2022
In order to effectively prevent and control coal spontaneous combustion disasters in Tangjiahui Mine, thermogravimetric experiments were used to analyze the thermal reaction kinetics characteristics of coal samples at different heating rates and ...
WEN Hu, LIU Chun, ZHAO Qingwei, WANG Zhenping, LU Yanbo, DAI Aiping, ZHANG Duo   +6 more
doaj   +1 more source

Database for Active Transportation Infrastructure and Volume [PDF]

Transportation Research Record: Journal of the Transportation Research Board, 2015
Information about pedestrian infrastructure and volume is indispensable to monitoring, evaluating, and improving the environment for comfortable and safe walking. However, determining and organizing the various types of data in a way that is easy to update and analyze can present challenges.
Proulx, Frank R., Zhang, Yuanyuan, PhD, Grembek, Offer, PhD   +2 more
openaire   +3 more sources

Pressure Dependence of Magnesite Creep

Geosciences, 2019
We determined the activation volumes (V*) for polycrystalline magnesite with grain sizes of 2 and 80 µm deforming by low temperature plasticity (LTP) mechanisms (kinking and dislocation glide), diffusion creep, and dislocation creep at temperatures ...
Joseph W. Millard, Caleb W. Holyoke, Rachel K. Wells, Cole Blasko, Andreas K. Kronenberg, Paul Raterron, Casey Braccia, Nicholas Jackson, Caleb A. McDaniel, Leif Tokle   +9 more
doaj   +1 more source