Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Longyun Zhang"'
Publikováno v:
Energies, Vol 16, Iss 10, p 4141 (2023)
Carbonate rock oilfields account for two-thirds of proven marine carbonate oilfield reserves, which are the primary way to increase future oil and gas energy reserves. Cave collapses occur during the process of oil reservoir development, seriously af
Externí odkaz:
https://doaj.org/article/8dea70203fa54ed1a6e68610ce140a33
Publikováno v:
Geofluids, Vol 2022 (2022)
The complex mechanical properties of deep water-sensitive rocks during construction bring great challenges to the construction and stability analysis of underground engineering in water-sensitive strata. Taking Xianglu Mountain Tunnel in the Central
Externí odkaz:
https://doaj.org/article/a7a998215f3a4fe7a6068e27d4dd3dd0
Autor:
Longyun Zhang, Shangyang Yang
Publikováno v:
Advances in Materials Science and Engineering, Vol 2020 (2020)
In order to study the unloading rheological properties of hard rock under complicated conditions, the proposed Mengdigou hydropower station with a granite dam foundation was taken as the research object. This paper studied the unloading rheological p
Externí odkaz:
https://doaj.org/article/7828fd04158447e8b86cad1c903bd1a4
Publikováno v:
Cancers, Vol 13, Iss 9, p 2116 (2021)
The high concentrations of individual phytochemicals in vitro studies cannot be physiologically achieved in humans. Our solution for this concentration gap between in vitro and human studies is to combine two or more phytochemicals. We screened 12 ph
Externí odkaz:
https://doaj.org/article/010567edb6f14946a123e1ac22073712
Publikováno v:
Molecules, Vol 25, Iss 10, p 2412 (2020)
Ginsenoside Rh2, an intermediate metabolite of ginseng, but not naturally occurring, has recently drawn attention because of its anticancer effect. However, it is not clear if and how Rh2 inhibits preadipocytes differentiation. In the present study,
Externí odkaz:
https://doaj.org/article/04ffeb0a590b4468a7407e381b6bb522
Publikováno v:
Geosciences, Vol 8, Iss 7, p 237 (2018)
With the decreasing of shallow resources, underground roadways of resources exploitation have reached into deep rock mass with high geostress. A series of new failure phenomena such as zonal disintegration phenomenon were discovered in deep surroundi
Externí odkaz:
https://doaj.org/article/b16c358aa70740109456bcf65a6e47e6
Publikováno v:
ACS Applied Nano Materials. 6:390-397
Publikováno v:
Polymer Composites. 43:6660-6666
Publikováno v:
Rock Mechanics and Rock Engineering. 55:3939-3957
Publikováno v:
Sustainability; Volume 15; Issue 8; Pages: 6809
Fractured-vuggy oil reservoirs, with the decrease of formation pressure during the exploitation process, lead to the collapse of caverns or the closure of sizeable fractured oil channels, which seriously affects oil well production and the recovery r