Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Qingfang Ji"'
Autor:
Gang Zou, Qingfang Ji, Jianping Chen, Luye Zhang, Qianqian Sun, Yaqi Shi, Yingjun Yang, Fenhe Zhou, Xing Wei, Luming Sun
Publikováno v:
Frontiers in Medicine, Vol 10 (2024)
ObjectiveThe study aimed to evaluate the pregnancy outcomes of dichorionic diamniotic twin pregnancies that were reduced to singletons at different gestational ages.Study designThis was a retrospective cohort study of twin pregnancies that underwent
Externí odkaz:
https://doaj.org/article/0af0dfdb100545cd936a3a167538fc1f
Publikováno v:
Hereditas, Vol 159, Iss 1, Pp 1-12 (2022)
Abstract Background Preeclampsia, a multisystem disorder of unknown etiology, is one of the leading causes of maternal and perinatal morbidity and mortality. Identifying sensitive, noninvasive markers can aid its prevention and improve prognosis. mic
Externí odkaz:
https://doaj.org/article/5d2e6f7947cf46ca925994b5059f0b34
Publikováno v:
Journal of Applied Crystallography. 55:1247-1254
Drug molecules undergo changes to their intermolecular binding patterns under extreme conditions, leading to structural phase transitions which produce different polymorphs. Polymorphism of aspirin (acetylsalicylic acid), one of the most widely consu
Publikováno v:
Photonics, Vol 11, Iss 4, p 378 (2024)
When a platform carrying a space laser communication system moves through the atmosphere, the relative motion of the turret and the air produces fluctuations in the air density, which affects the beam propagation, and, hence, the laser communication
Externí odkaz:
https://doaj.org/article/89f6f4e7432745689dbd5d4633560d2f
Autor:
Yaling Chen, Chengze Ming, Ke Xie, Shiming Gao, Qingfang Jiang, Zhi Liu, Haifeng Yao, Keyan Dong
Publikováno v:
Photonics, Vol 11, Iss 4, p 326 (2024)
Adaptive free-space optical (FSO) communication links have been extensively studied in order to adapt to variable atmospheric channel environments due to factors such as atmospheric turbulence. As a supporting technology, an all-in-one BPSK/QPSK swit
Externí odkaz:
https://doaj.org/article/7967e4cf301849129275f1bd19547ce2
Autor:
Qingfang Jiang
Publikováno v:
Atmosphere, Vol 15, Iss 2, p 220 (2024)
The development and breakdown of Kelvin–Helmholtz (KH) waves (billows) in the stable atmospheric boundary layer (SABL) and their impact on vertical transport of momentum and scalars have been examined utilizing large eddy simulations. These simulat
Externí odkaz:
https://doaj.org/article/a7ef80a86b5244ce8246bf3fc8522b44
Autor:
Qingfang Jiang, Zhi Liu, Haifeng Yao, Zhonglin Luo, Xin Zhang, Shutong Liu, Chenming Cao, Gang Jing, Hao Li, Peng Lin
Publikováno v:
Photonics, Vol 11, Iss 1, p 34 (2023)
This paper proposes an adaptive bit-interleaved polar coded modulation (A-BIPCM) method based on minimum logarithmic upper bound weight (MLUW). It is designed to reduce the fading effects and long string of bit error interference caused by atmospheri
Externí odkaz:
https://doaj.org/article/609e1ceac44646b6b6f07afef276b255
Autor:
Haifeng Yao, Yuxi Cao, Weihao Wang, Qingfang Jiang, Jie Cao, Qun Hao, Zhi Liu, Peng Zhang, Yidi Chang, Guiyun Zhang, Tongtong Geng
Publikováno v:
Sensors, Vol 23, Iss 13, p 5874 (2023)
In this paper, an atmospheric structure constant Cn2 model is proposed for evaluating the channel turbulence degree of atmospheric laser communication. First, we derive a mathematical model for the correlation between the atmospheric coherence length
Externí odkaz:
https://doaj.org/article/0e8f70c3193b416e9376ffd412caa50b