Zobrazeno 1 - 10
of 2 728
pro vyhledávání: '"Ren Qiang"'
Publikováno v:
Meikuang Anquan, Vol 53, Iss 2, Pp 112-119 (2022)
In recent years, as coal mining strategy has moved westward in China, rockburst has now become the most severely affected coal mine disaster in Ordoes area. This paper takes Hongqingliang Coal Mine in Tarangole Mining Area of Ordos coalfield as the b
Externí odkaz:
https://doaj.org/article/75be8bec0b304b7d85271c303c9f179b
Autor:
Gangjun Gong, Ren Qiang, Jiaxuan Yang, Rui Hou, Zeming Lv, Mingfeng Xu, Xuesong Liu, Haixia Yang
Publikováno v:
Energies, Vol 16, Iss 1, p 464 (2023)
Under the global goal of “carbon peaking and carbon neutrality”, new power system is facing a new energy development trend of increasing the capacity of new energy and reducing the capacity and quantity of coal power. Furthermore, new power syste
Externí odkaz:
https://doaj.org/article/384a1e515bdc401cbfde723fe3b8e589
Publikováno v:
Geofluids, Vol 2022 (2022)
Pore throat structure is the key factor affecting displacement efficiency in low permeability reservoirs. In this paper, the pore throat structure and displacement characteristics of Chang 6 low permeability sandstone reservoir in Wuqi area of Ordos
Externí odkaz:
https://doaj.org/article/35b91a93bf1e4731911d9683f32b6c76
Publikováno v:
Frontiers in Marine Science, Vol 8 (2022)
The southern Yellow Sea Cold Water Mass (YSCWM) and the Yellow Sea Warm Current (YSWC) are prominent features in the southern Yellow Sea. The traditional viewpoint is that the southern YSCWM exists in the warm half of the year and the YSWC exists in
Externí odkaz:
https://doaj.org/article/148b2dab8508481ab68da733d2f2cfa3
Publikováno v:
Jixie chuandong, Vol 44, Pp 9-13 (2020)
Honing has become an important method of gear finishing. It is of great significance to study the honing mechanism and accurately grasp the influence of honing speed and particle size on the roughness of the tooth surface in order to improve the surf
Externí odkaz:
https://doaj.org/article/87ef5f8a83334db2abf47b3f48b093c0
Publikováno v:
Main Group Metal Chemistry, Vol 42, Iss 1, Pp 19-22 (2019)
We report here the coordination-mediated resolution of methyl o-chloromandelate, which is a key intermediate for clopidogrel, in preparative scale. The reaction of CaO, optically pure (2R, 3R)-O,O′-dibenzoyltartaric acid, and methyl o-chloromandela
Externí odkaz:
https://doaj.org/article/3bc880e812e24c0c840bbcc81214ff85
Autor:
Ren, Qiang
We consider the following anisotropic sinh-Poisson tpye equation with a Hardy or H\'{e}non term: $${\begin{array}{ll} -\Div (a(x)\nabla u)+ a(x)u=\varepsilon^2a(x)|x-q|^{2\alpha}(e^u-e^{-u}) &\mbox{in $\Omega$,} \\ \frac{\partial u}{\partial n}=0, &\
Externí odkaz:
http://arxiv.org/abs/2401.10485
Publikováno v:
E3S Web of Conferences, Vol 356, p 05068 (2022)
People spend most of their time indoors. The volatile organic compounds (VOCs) in indoor air represented by toluene inevitably affect people's health. Activated carbon can effectively reduce indoor VOCs pollution. The experiments in the previous stud
Externí odkaz:
https://doaj.org/article/ac38b07d1b1d4b41be68d43d528ca154