Zobrazeno 1 - 10
of 213
pro vyhledávání: '"Guangxia Li"'
Publikováno v:
Water, Vol 16, Iss 15, p 2074 (2024)
Water, energy, and food (WEF) are critical resources to sustain urban development, which requires a sustainable structure of the urban WEF nexus to address trade-offs and achieve synergies. Although interactions in the WEF nexus are widely explored,
Externí odkaz:
https://doaj.org/article/2f5db1cfac2247aea81bd52023c98d5c
Autor:
Yingwei Wang, Guangxia Li, Jing Qi, Ting Gong, Xiudong Li, Fanghe Liu, Xuejing Bi, Yang Zhao, Meihua Liang, Xiaodong Zheng, Yuandong Qiao
Publikováno v:
BMC Cardiovascular Disorders, Vol 22, Iss 1, Pp 1-7 (2022)
Abstract Background Endothelial dysfunction appears early in the development of cardiovascular disease and is associated with type 2 diabetes. We, therefore, tested the hypothesis that endothelial dysfunction is already present in healthy Chinese ado
Externí odkaz:
https://doaj.org/article/078cc5685b124b568c0bab539cefd3fb
Publikováno v:
Applied Sciences, Vol 13, Iss 21, p 11803 (2023)
When the carrier of the Satcom-on-the-Move (SOTM) antenna is in a high maneuvering state of motion, the accuracy of the array antenna beam pointing towards the satellite may decrease, which may cause a decline in communication effectiveness for SOTM
Externí odkaz:
https://doaj.org/article/1c7706487e764c4b89d4f5a177c653e5
Publikováno v:
IEEE Access, Vol 9, Pp 56468-56478 (2021)
In recent years, low earth orbit (LEO) satellite constellation systems have been developed rapidly. However, the scarcity of satellite spectrum resources has become one of the major obstacles to this trend. LEO satellite constellation communication s
Externí odkaz:
https://doaj.org/article/a85908e2426d427a85f3c9e4f00931aa
Publikováno v:
IEEE Access, Vol 9, Pp 57578-57588 (2021)
The beam-hopping (BH) technology applied to low earth orbit (LEO) satellite communication networks is a superior choice, but the long transmission delay partly caused by data packets waiting in the queue of satellite transponders will seriously affec
Externí odkaz:
https://doaj.org/article/b8daaa7d531346c88bc4f0e4647b5c18
Publikováno v:
IEEE Access, Vol 9, Pp 93255-93266 (2021)
Multi-layer satellite networks (MLSNs) is of great potential for the integrated 5G networks to provide diversified services. However, MLSNs confront frequency interference coordination problem between satellite systems in different orbits. This paper
Externí odkaz:
https://doaj.org/article/efa58328d26b401f95ef7f480da780f4
Publikováno v:
IEEE Access, Vol 8, Pp 161396-161405 (2020)
Having the ability to provide seamless coverage and alleviate the frequency scarcity, the cognitive satellite terrestrial network becomes a promising candidate for future communication networks. In the cognitive network, spectrum sensing plays an imp
Externí odkaz:
https://doaj.org/article/53935fb5dae84d5a82acb5b2d9fdc390
Publikováno v:
Molecules, Vol 27, Iss 13, p 3985 (2022)
(-)-α-Bisabolol (BIS) is a sesquiterpene alcohol derived mostly from Matricaria recutita L., which is a traditional herb and exhibits multiple biologic activities. BIS has been reported for treatment of skin disorders, but the effect of BIS on anti-
Externí odkaz:
https://doaj.org/article/21561016ad1444f59c423561ca8dad03
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 13 (2017)
To improve the efficiency of on-board resources utilization, two joint power and bandwidth allocation schemes are proposed to optimize power and timeslot allocation for beam-hopping user downlinks of the smart gateway system. By decomposing the two-v
Externí odkaz:
https://doaj.org/article/a6f461897ec446c687ec6dd54b9cb332
Publikováno v:
Sensors, Vol 17, Iss 9, p 2025 (2017)
This paper proposes novel satellite-based wireless sensor networks (WSNs), which integrate the WSN with the cognitive satellite terrestrial network. Having the ability to provide seamless network access and alleviate the spectrum scarcity, cognitive
Externí odkaz:
https://doaj.org/article/915bb94bb34344fbbc91c767f28d0730