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pro vyhledávání: '"Pu-Jin Zhang"'
Publikováno v:
Global Ecology and Conservation, Vol 32, Iss , Pp e01914- (2021)
Helianthemum songaricum is a tertiary relict plant and an endemic species found in the central of Asia. It is the only species of the Cistaceae family found in China and categorized as a rare and endangered one. However, little is known about how thi
Externí odkaz:
https://doaj.org/article/36c034f03bfe43aa90681f069fc6849a
Publikováno v:
Advances in Civil Engineering, Vol 2020 (2020)
The stress condition of tunnel surrounding rock mass is complex. The stress concentration of in situ brittle rock mass caused by excavation results in localized damage evolution parallel to the free face, which is called surface instability. The rock
Externí odkaz:
https://doaj.org/article/155f744b06794b7c80f96830d93583c9
Publikováno v:
Advances in Civil Engineering, Vol 2020 (2020)
The stress condition of tunnel surrounding rock mass is complex. The stress concentration of in situ brittle rock mass caused by excavation results in localized damage evolution parallel to the free face, which is called surface instability. The rock