Results 71 to 80 of about 3,193,195 (208)

Superconducting magnesium diboride films with Tc \approx 24K grown by pulsed laser deposition with in-situ anneal

, 2001
Thin superconducting films of magnesium diboride (MgB2) with Tc \approx 24K were prepared on various oxide substrates by pulsed laser deposition (PLD) followed by an in-situ anneal.
B.C. Sales, Bud'ko, C. Cantoni, C. Rouleau, D.H. Lowndes, D.K. Christen, D.P. Norton, H.M. Christen, H.Y. Zhai, Kambara, M. Paranthaman, Nagamatsu, Yilmaz   +12 more
core   +1 more source

Mechanics and Permeability Evolution Mechanism of Bedded Sandy Mudstone under Fluid-Solid Coupling Action

Taiyuan Ligong Daxue xuebao
[Purposes] In order to better understand the permeability changes of coal measure bedded sandy mudstone under stress, the mechanical characteristics and permeability of bedded sandy mudstone were studied by discrete element simulation on the basis of the
LIU Xinyu, CHAI Zhaoyun, XIN Zipeng, XIAO Chang, LIU Xiangyu, LI Tianyu, YAN Ke, DUAN Biying   +7 more
doaj   +1 more source

Grouting and re-bearing behaviors of sandy mudstone in the residual stage

Journal of Rock Mechanics and Geotechnical Engineering
Grouting is an essential technique for reinforcing tunnel rock masses following deformation and failure. However, the mechanisms and effectiveness evaluation of grouting in fractured rock masses that have experienced substantial deformation and ...
Zipeng Xin, Zhaoyun Chai, Xuliang Zhang, Keqin Lian, Chang Xiao, Xiangyu Liu, Yuxu Shen, Wei Gong   +7 more
doaj   +1 more source

Prediction of Fractal Dimension in Shale CT and its Robustness to Interference Based on Convolutional Neural Networks

Taiyuan Ligong Daxue xuebao
[Purposes] The development of shale oil and gas often requires a thorough understanding of the internal pore-fracture distribution patterns within shale reservoirs to optimize development strategies and enhance production capacity.
SUN Dingwei, WANG Lei, YANG Dong, HUANG Xudong, JIA Yichao   +4 more
doaj   +1 more source

In situ Characterization of Nanoparticles Using Rayleigh Scattering

, 2017
We report a theoretical analysis showing that Rayleigh scattering could be used to monitor the growth of nanoparticles under arc discharge conditions. We compute the Rayleigh scattering cross sections of the nanoparticles by combining light scattering ...
Car, Roberto, Santra, Biswajit, Shneider, Mikhail N.   +2 more
core   +2 more sources

Determination of wall width of gob-side entry driving by pre-built concrete wall and stress and deformation characteristics analysis

Meikuang Anquan
Aiming at the problem of determining the wall width of gob-side entry driving by the pre-built concrete wall, taking No.3 coal seam of Jinxing Coal Industry as the research background, the width range of the side wall is determined by theoretical ...
Lining GUO, Tianhe KANG, Jiachang WANG, Jie DENG, Ze WANG   +4 more
doaj   +1 more source

Experimental on N2 foam fracturing characteristics of tight siltstone in coal measures

Meitan xuebao
Foam fracturing with low water consumption, low reservoir damage and high flowback efficiency is one of the potential technologies for the development of low-pressure, low-permeability and strong water-sensitive coal measures reservoirs.
Hecheng XIAO, Weiguo LIANG, Wenda LI, Zaiyong WANG, Wangyang CHAI   +4 more
doaj   +1 more source

Theoretical Investigation of the Sliding Instability and Caving Depth of Coal Wall Workface Based on the Bishop Strip Method

Advances in Civil Engineering, 2019
As mining height increases, the influence of coal wall caving on safety production becomes stronger. There is no systematic and effective method to analyse the risk of coal wall caving and its slip caving depth.
Chao Li, Tianhe Kang, Xiaopo Li, Ligong Li, Xiaoyu Zhang, Runxu Zhang   +5 more
doaj   +1 more source

Creep damage model for deep salt rock under temperature and stress coupling effect

Meitan xuebao
As the demand on the construction salt rock storage increases in China, the shallow suitable deposits have been gradually exhausted, as such, the utilization shift from shallow to deep salt deposits is an inevitable trend.
Shengli ZHANG, Suguo XU, Ning XIAO, Jing LI, Chao LI   +4 more
doaj   +1 more source

Post-growth annealing of GaMnAs under As capping - an alternative way to increase Tc

, 2004
We demonstrate that in situ post-growth annealing of GaMnAs layers under As capping is adequate for achieving high Curie temperatures (Tc) in a similar way as ex situ annealing in air or in N2 atmosphere practiced earlier.Comment: 13 pages, 4 ...
Adell, M., Charar, S., Domagala, J. Z., Hernandez, C., Ilver, L., Kanski, J., Sadowski, J., Stanciu, V., Svedlindh, P., Terki, F.   +9 more
core   +3 more sources