Results 71 to 80 of about 2,935 (216)

Geophysics Indicator of Sandstone‐Type Uranium Mineralization in the Northern Ordos Basin, China: Analysis From Gravity and Magnetic Data

open access: yesEarth and Space Science, Volume 12, Issue 3, March 2025.
Abstract Ordos Basin, one of the largest uranium resource areas in China, holds significant potential due to its favorable metallogenic geological conditions and promising potential. Early exploration efforts primarily targeted sandstone‐hosted uranium deposits.
M. L. Xu   +6 more
wiley   +1 more source

Accumulation conditions and exploration directions of natural gas in deep subsalt Sinian-Cambrian System in the eastern Sichuan Basin, SW China

open access: yesPetroleum Exploration and Development, 2015
Based on comprehensive analysis of outcrops and drilling data, and interpretation of more than 6×104 km2 seismic data, this paper delineates the regional distribution of the gypsum-salt layers in Middle-Lower Cambrian in eastern Sichuan Basin, and ...
Zhidong GU   +6 more
doaj   +1 more source

Magnetic field and rotor impedance analysis of solid rotor induction motors using the multilayer analytical method

open access: yesIET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
A multi‐layer analytical model for calculating the magnetic field and equivalent circuit parameters of solid rotor induction motors is proposed, which can consider the effects of saturation effect and end effect of the solid rotor. The accuracy of the analytical model is verified by finite element simulation and prototype test.
Hao Xu   +3 more
wiley   +1 more source

Brief History of Science Translation in China [PDF]

open access: yes, 2005
Science translation is a new branch of learning in China, but its practice can be traced back to about 200 BC. It includes all the practical fields but literary translation.
Jianzhong, Xu
core   +1 more source

Towards an improved understanding of Ca–Mg carbonates with nonplanar surfaces: An experimental approach

open access: yesSedimentology, Volume 72, Issue 1, Page 100-131, January 2025.
ABSTRACT Saddle dolomite is a Ca–Mg carbonate characterized by curved crystal faces, curved cleavage and sweeping extinction under cross‐polarized light. Saddle dolomite and, generally, Ca–Mg carbonates with curved crystal faces, are often assigned to the burial (hydrothermal) realm and serve as proxy archives for hydrogeochemical processes in ...
Yi‐Fan Zhang   +7 more
wiley   +1 more source

Integrated stratigraphy and astrochronology of the Messinian GSSP at Oued Akrech (Atlantic Morocco) [PDF]

open access: yes, 2000
A much improved high-resolution integrated stratigraphy (calcareous plankton biostratigraphy, magnetostratigraphy, cyclostratigraphy) is presented for the classic section of Oued Akrech (Atlantic Morocco) straddling the Tortonian^Messinian boundary ...
Bissoli, L.   +6 more
core   +1 more source

Enrichment Mechanism of the Organic‐Rich Shale in Ediacaran Doushantuo Formation in Western Sichuan Basin, South China

open access: yesGeofluids, Volume 2025, Issue 1, 2025.
The Ediacaran Doushantuo Formation in South China has been increasingly recognized as a significant potential source rock for hydrocarbon reservoirs, particularly in relation to the overlying Dengying Formation. This study conducts a comprehensive geochemical analysis of the organic‐rich shale from the Ebian‐Xianfeng section within the Sichuan Basin ...
Bokai Dai, Xingzhi Ma, Fan Yang
wiley   +1 more source

The strata and palaeo-geomorphology framework at the end of neoproterozoic and development mode of source rocks at the beginning of Cambrian in Tarim Basin, China

open access: yesJournal of Natural Gas Geoscience, 2017
Referred to the new recognition from petroleum exploration of the Sinian to Cambrian in South China, it could be considered that the distribution of the early Cambrian source rocks was controlled by the palaeo-geomorphology at the end of Neoproterozoic ...
Xin Yang   +5 more
doaj   +1 more source

Height Propagation Law and Controlling Strategies of Acid Fractures in Carbonate Gas Reservoirs With Bottom Water Layer Under Different Stress Profiles

open access: yesGeofluids, Volume 2025, Issue 1, 2025.
Acid fracturing is currently employed to develop the carbonate gas reservoir in the second section of the Dengying Formation at the Anyue Gas Field, Sichuan Basin. However, improper acid‐fracturing operational parameters pose a risk of fracture communication with the bottom water layer, leading to increased water production and a significant decline in
Jian Yang   +8 more
wiley   +1 more source

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