Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Yongjun, Qin"'
Autor:
Ping Wang, Jian Wang, Yuansheng Du, Wenchao Yu, Qi Zhou, Li Tian, Liangjun Yuan, Wen Pan, Wei Wei, Yongjun Qin, Zhixin Ma
Publikováno v:
Frontiers in Marine Science, Vol 11 (2024)
The Nanhua Basin of South China recorded complete Cryogenian stratigraphic sequence from the Sturtian Glaciation (~717–660 Ma) to the Marinoan Glaciation (~654–635 Ma). The interglacial Datangpo Fm in the Nanhua Basin is divided into two members,
Externí odkaz:
https://doaj.org/article/e2c544c7fae34a9ba095da19325cc385
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract In order to alleviate environmental problems and reduce CO2 emissions, geopolymers had drew attention as a kind of alkali-activated materials. Geopolymers are easier access to raw materials, green and environment friendly than traditional ce
Externí odkaz:
https://doaj.org/article/ee5950fb27d7415e871006d80fb6a0a0
Publikováno v:
Materials, Vol 17, Iss 20, p 5045 (2024)
The chloride–sulfate corrosion environment of concrete is a significant engineering problem. This paper investigates the effect of the complete/semi–immersion mode on the durability of concrete in a chloride–sulfate environment by using differe
Externí odkaz:
https://doaj.org/article/4fc705c5e2754c06a287d955ead79823
Publikováno v:
Materials, Vol 17, Iss 17, p 4262 (2024)
This paper mainly explores the feasibility of using desert sand (DS) and recycled aggregate in cement-stabilized bases. Recycled coarse aggregate (RCA) and DS serve as the substitutes of natural coarse and fine aggregates, respectively, in cement-sta
Externí odkaz:
https://doaj.org/article/7f1c9c02b9cb4438bf7ab31c312a8bd5
Publikováno v:
Applied Sciences, Vol 14, Iss 12, p 5327 (2024)
The issue of uneven ground settlement caused by the excavation of subway tunnels represents a significant challenge in the design and construction of subway projects. This paper examined the fractal characteristics of surface settlement caused by sub
Externí odkaz:
https://doaj.org/article/1f06ae279f60420cb0343d127e5c6c5c
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-11 (2023)
Abstract Considering anti-rotation of sand particles, two-dimensional Discrete Element Method (DEM) has been employed to reproduce direct shear behaviors of sand with different particle distribution sizes, so as to explore effects of anti-rotation of
Externí odkaz:
https://doaj.org/article/e8772ed4584242c096fd4a0b8d112b97
Publikováno v:
PLoS ONE, Vol 19, Iss 3, p e0298524 (2024)
The uneven settlement of the surrounding ground surface caused by subway construction is not only complicated but also liable to cause casualties and property damage, so a timely understanding of the ground settlement deformation in the subway excava
Externí odkaz:
https://doaj.org/article/338f63a7d64845b282aa2a1c838303a8
Publikováno v:
PLoS ONE, Vol 19, Iss 2, p e0280486 (2024)
The mechanical properties of deep rock masses are significantly influenced by temperature and other factors. The effect of temperature on the strength of deep rock masses will pose a serious challenge to deep resource exploitation and engineering con
Externí odkaz:
https://doaj.org/article/0256899ab68c4a43bf2d79e1dbc2bbd1
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-16 (2023)
Abstract By researching the distance between blasthole and interface of soft-hard rock strata, as well as the time of delay detonation, blasting effect of the rock mass will be more controllable. Firstly, validity of numerical method was authenticate
Externí odkaz:
https://doaj.org/article/cb4e92ad8ed14f4ab7126b93f6dd5a1c
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-19 (2023)
Abstract A new, precast concrete frame beam-column connection is designed in this research. The connection adopts the assembly mode of the precast column and seam area jointly to maintain the integrity of the joint area and increase the assembly effi
Externí odkaz:
https://doaj.org/article/b82b08d5c69648b4a2e30200e278c805