Zobrazeno 1 - 10
of 1 385
pro vyhledávání: '"QU Yuanyuan"'
Publikováno v:
Zhongguo quanke yixue, Vol 27, Iss 13, Pp 1594-1600 (2024)
Background Asthma is one of the most common chronic respiratory diseases. Understanding its prevalence, trend and risk factors is of great significance to take targeted preventive and control measures. Objective To analyze the prevalence, burden and
Externí odkaz:
https://doaj.org/article/69ad3d37cf8e479e97b61015d047e2f8
Publikováno v:
Shuitu baochi tongbao, Vol 43, Iss 3, Pp 34-40 (2023)
[Objective] The effect of different vegetation covers on soil infiltration capacity in Inner Mongolia was analyzed in order to provide a theoretical basis for ecological restoration and vegetation allocation of the region. [Methods] Three ages of aba
Externí odkaz:
https://doaj.org/article/eea38df70c844b4db6d0ad7c6d2316f5
Publikováno v:
矿业科学学报, Vol 7, Iss 3, Pp 354-363 (2022)
Facing the demand of autonomous path correction of the road-header working underground, a control law was designed and simplified based on the position and orientation deviation model of the road-header against its aimed walking trajectory.Reasonable
Externí odkaz:
https://doaj.org/article/977a7563bf944a05b22136cbc9da9751
Let $(M, g, f)$ be a $5$-dimensional complete noncompact gradient shrinking Ricci soliton with the equation $Ric+\nabla^2f= \lambda g$, where $\text{Ric}$ is the Ricci tensor and $\nabla^2f$ is the Hessian of the potential function $f$. We prove that
Externí odkaz:
http://arxiv.org/abs/2411.10712
Suppose $(M^n, g, f)$ is a complete shrinking gradient Ricci soliton. We give several rigidity results under some natural conditions, generalizing the results in \cite{Petersen-Wylie,Guan-Lu-Xu}. Using maximum principle, we prove that shrinking gradi
Externí odkaz:
http://arxiv.org/abs/2411.06395
Autor:
Cai, Xiaofan, Chen, Ruichang, Gao, Xu, Yuan, Meili, Hu, Haixia, Yin, Hang, Qu, Yuanyuan, Tan, Yang, Chen, Feng
Recently, avalanche multiplication has been observed in TMDC-based FETs, enhancing sensor performance with high sensitivity. However, the high voltage required for operation can damage the FETs, making it crucial to reduce the breakdown voltage for e
Externí odkaz:
http://arxiv.org/abs/2409.07677
Publikováno v:
矿业科学学报, Vol 5, Iss 2, Pp 194-202 (2020)
According to the working characteristics of the underground road-header, path planning and movements scheduling for path correction of the road-header is formulated.The position and orientation errors of the road-header during working are also presen
Externí odkaz:
https://doaj.org/article/f4618d4bcd3642a6b8c0afe45c173e09
Autor:
Zhao Siyue, Li Caiwu, Li Guo, Yang Shengzhi, Zhou Yingming, He Yongguo, Wu Daifu, Zhou Yu, Zeng Wen, Li Ti, Qu Yuanyuan, Li Bei, Deng Wenwen, Jin Lei, Yu Xiumei, Huang Yan, Zhang Hemin, Zou Likou
Publikováno v:
Open Life Sciences, Vol 14, Iss 1, Pp 288-298 (2019)
The giant panda (GP) was the most endangered species in China, and gut microbiota plays a vital role in host health. To determine the differences of the gut microbiota among the male, female and pregnant GPs, a comparative analysis of gut microbiota
Externí odkaz:
https://doaj.org/article/23605cfe8dc144418f86ab5c7f55c061
Publikováno v:
Dianzi Jishu Yingyong, Vol 44, Iss 9, Pp 99-103 (2018)
NB-IoT is an emerging cellular technology that provides better coverage for applications with large connectivity,low power,low throughput,low device cost and high latency tolerance.Compared with Long Term Evolution(LTE)system,the Narrow-band Physical
Externí odkaz:
https://doaj.org/article/4d38506c1a7e46b8aeca571016bd3464
Publikováno v:
In Journal of Environmental Chemical Engineering December 2024 12(6)