Jingjing Fan

1 month ago | mdpi.com | Xu Wei |Jingjing Fan |Huahua Wang |LuLu Cai

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Sep 23, 2024 | mdpi.com | Na Zhang |Jingjing Fan |Guodong Li |Yang Bai

1. Introduction 1.1. BackgroundElectricity is an important factor in guaranteeing the development of the national economy, and a safe and reliable power supply is related to the development of various industries in society. The substation plays a critical role in the power system by facilitating the transmission of electricity from power plants to end-users through voltage conversion between high and low levels.

Feb 27, 2024 | onlinelibrary.wiley.com | Jingjing Fan |Junhua Mei |Yuan Yang |Jiajia Lu

CONFLICT OF INTEREST STATEMENT This project is an investigator-initiated study. The scientific question of the study was originated from Dr. Fengfei Ding and Dr. Wei Wang. The design and conduction of the study was sponsored by Tongji hospital. We declare no personal financial interests involved in any sense. No fee was paid personally. This project was funded by National Key R&D Program of China, 2021YFC2502200.

Aug 16, 2023 | mdpi.com | Xiaodong Xie |Pengcheng Tu |Jingjing Fan |Jie Gao

3. The Aging Mechanism of Low-Grade Hard Asphalt 3.1. Aging Characteristics of Low-Grade Asphalt Based on FTIR 3.1.1. Infrared Spectral Characteristics of Asphalt before and after AgingFigure 2 illustrates the FTIR spectra of 30#, 50#, and 70# asphalt before and after short-term aging, long-term aging, and ultraviolet aging. In the functional group region, strong absorption peaks can be observed at 2923 cm−1 and 2853 cm−1, corresponding to C-H bond stretching vibrations.