Results 61 to 70 of about 4,570,024 (235)

Study on mechanics and permeability evolution of sandy mudstone during full stress-strain loading

Meitan xuebao
The evolution law of surrounding rock pore crack and its permeability change during soft rock roadway excavation is one of the basic scientific problems to be solved in water inrush disaster prevention and grouting reinforcement of weak surrounding rock.
Zhaoyun CHAI, Xiaoling WU, Xiangyu LIU, Xu LIU, Yuxu SHEN, Zipeng XIN   +5 more
doaj   +1 more source

Study on the Mechanism of Surrounding Rock Deformation and Its Control for Roof Cutting Retained Gob-Side Entry in Close-Distance Coal Seams Co-Mining

Energies, 2023
Sustainable development in coal mining requires a continuous and efficient method of coal extraction. Research shows that gob-side entries retained through roof cutting retained gob-side (RCGE) are vital for improving mining efficiency, enhancing coal ...
Yongkang Yang, Xuecong Xu, Chenlong Wang
doaj   +1 more source

Enhanced Piezoelectric Coefficient of PVDF-TrFE Films via In Situ Polarization

Frontiers in Energy Research, 2021
The d33 coefficient = 28 pC/N of PVDF-TrFE piezoelectric films was achieved by the in situ polarization. Compared with traditional poling methods, the in situ polarization is performed with low poling voltage and short poling time, and it can ensure the ...
Xiaoran Hu, Mengli You, N. Yi, Xiaokun Zhang, Y. Xiang   +4 more
semanticscholar   +1 more source

Research on the Method of Methane Emission Prediction Using Improved Grey Radial Basis Function Neural Network Model

Energies, 2020
Effectively avoiding methane accidents is vital to the security of manufacturing minerals. Coal mine methane accidents are often caused by a methane concentration overrun, and accurately predicting methane emission quantity in a coal mine is key to ...
Yongkang Yang, Qiaoyi Du, Chenlong Wang, Yu Bai   +3 more
doaj   +1 more source

Hibridación in situ fluorescente (FISH) [PDF]

, 2016
Background: At the end of 80s, cloning technologies with the increase of the antibodies’ sensibility made easier the development of technologies based on Fluorescence in situ Hibridation (FISH).
Aguilar, Ruben, Montoro, Carolina
core  

2007 Great Bay Water Quality (DataSonde) Monitoring Program [PDF]

, 2008
In situ water quality assessment has become an important source of data for monitoring, research and management activities in estuaries nationwide. As part of the National Estuarine Research Reserve System, the Great Bay System-Wide Monitoring Program ...
Pennock, Jonathan
core   +4 more sources

Orthogonal optimization of the ratio of nano-silica sol-EVA-fly ash cement-based composite slurry and the effect on its physical properties

Meitan xuebao
To address the problem that traditional cement-based slurry materials cannot meet the actual demand for grouting and reinforcement of large deformation roadways in coal mines, some high-performance composite slurry materials are obtained by modifying ...
Yuxu SHEN, Zhaoyun CHAI, Haocheng SUN, Xiangyu LIU, Junqing GUO, Chang XIAO, Tianyu LI, Zipeng XIN, Qinbin SHI   +8 more
doaj   +1 more source

In Situ TEM Study of the Degradation of PbSe Nanocrystals in Air [PDF]

, 2018
PbSe nanocrystals have attracted widespread attention due to a variety of potential applications. However, the practical utility of these nanocrystals has been hindered by their poor air stability, which induces undesired changes in the optical and ...
Abelson, Alex, Bustillo, Karen C, Guo, Xuyun, Law, Matt, Liao, Hong-Gang, Peng, Xinxing, Qian, Caroline, Shangguan, Junyi, Sun, Shi-Gang, Wang, Yu, Yin, Zu-Wei, Yu, Lei, Zhang, Qiubo, Zheng, Haimei, Zheng, Wenjing   +14 more
core   +11 more sources

In Vitro Versus in Situ Ruminal Biohydrogenation of Unsaturated Fatty Acids from a Raw or Extruded Mixture of Ground Canola Seed/Canola Meal [PDF]

, 2003
Raw or extruded blends of ground canola seeds and canola meal were used to compare in vitro and in situ lag times and rates of disappearance due to ruminal biohydrogenation of unsaturated fatty acids.
Bayourthe, Corine, Enjalbert, Francis, Eynard, Philippe, Moncoulon, R., Nicot, Marie-Claude, Troegeler-Meynadier, Annabelle   +5 more
core   +1 more source

Mechanism of mechanical strength degradation and microstructure evolution of anthracite induced by supercritical carbon dioxide

Meitan kexue jishu
In order to reveal the effect of supercritical carbon dioxide on the mechanical strength and microstructure of anthracite in the process of CO2 injection into deep coal seams, takes anthracite as the research object, the degradation characteristics of ...
Yichao JIA, Dong YANG, Xudong HUANG, Dingwei SUN, Liguo HE   +4 more
doaj   +1 more source