Open Access Statement

In order to support the sharing and exchange of knowledge, Journal of Northwest University (Natural Science Edition) has been a fully Open Access journal since 2021. All articles published from 2021 onwards are made freely and permanently available online without subscription charges, embargo, or registration requirements. 

Articles published between 1913 and 2021 are available free to read on the journal's official website, where readers may download full-text PDFs. These articles are not covered by any open license; all rights are reserved, and copyright is held by the Editorial Office.

Permission Statement

All articles published in Journal of Northwest University (Natural Science Edition) from 2021 onwards are licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). Under this license, third parties are permitted to copy, redistribute, and share the articles in any medium or format for non-commercial purposes, provided that appropriate credit is given to the author(s) and the original source, and that no derivative works are created without prior permission. The full terms of the CC BY-NC-ND 4.0 license are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode

Copyright Statement

Authors retain the copyright of their work without restriction. Upon acceptance, authors grant Journal of Northwest University (Natural Science Edition) a non-exclusive license to publish, reproduce, distribute, and disseminate the article through print and electronic media, including information networks. Authors are free to share, archive (e.g., in institutional or subject repositories), and reuse their own work for any purpose, provided the original publication in this journal is acknowledged.

Archiving Policy

The journal submits archival copies of each issue to the China National Archives of Publications and Culture and the National Library of China. Legal deposit copies are preserved at the national level, independent of the journal and its publisher.The Editorial Office maintains complete print and electronic archives of all published issues as an internal backup, available for retrieval and reference at any time.

Repository Policy

The journal supports and encourages authors to deposit their articles published in the journal in institutional repositories, subject preprint servers, personal websites, or other non-commercial knowledge repositories, in order to enhance the discoverability, dissemination, and academic impact of their work. Authors are free to deposit any one or all of the following three versions: Submitted Version, Accepted version, Published version.