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Open Access



This is an open access journal: all articles will be immediately and permanently free for everyone to read and download. The journal is currently free to the authors and readers.Peer review under responsibility of China Agricultural University.

Access Rights
All articles published open access will be immediately and permanently free for everyone to read, download, copy and distribute.

Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND):
Allows users to copy and distribute the Article, provided this is not done for commercial purposes and further does not permit distribution of the Article if it is changed or edited in any way, and provided the user gives appropriate credit (with a link to the formal publication through the relevant DOI), provides a link to the license, and that the licensor is not represented as endorsing the use made of the work. The full details of the license are available at https://creativecommons.org/licenses/by-nc-nd/4.0/.

Author Rights
For open access publishing, this journal uses an exclusive licensing agreement. Authors will retain copyright but license exclusive rights in their article to the Sichuan Petroleum Administration. Authors have the right to share their article in the same ways permitted to third parties under the relevant user license, as well as certain scholarly usage rights.

Contact details
Email: ipa_cau@163.com
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