Zobrazeno 1 - 10
of 367
pro vyhledávání: '"JIAN-GUO MA"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract Large floating raft vibration isolation systems (FRVISs) based on high-static-low-dynamic stiffness (HSLDS) technology offer excellent low frequency vibration isolation performance with broad application prospects. However, the design proces
Externí odkaz:
https://doaj.org/article/c72022488e5b4fb0a72de4b23aa4e796
Publikováno v:
AIP Advances, Vol 13, Iss 3, Pp 035230-035230-12 (2023)
A precise transfer matrix was employed to analyze the free vibration characteristics of a cord-reinforced air spring with winding formation under preload conditions. The air spring was abstracted as a rotary combined shell structure with variable win
Externí odkaz:
https://doaj.org/article/3b5b46b51f1445fb9c9d11b69011b784
Publikováno v:
IEEE Access, Vol 8, Pp 59200-59210 (2020)
This paper presents a simple and universal measurement method for the average efficiency and instantaneous efficiency of pulsed RF power amplifiers. The average efficiency of the traditional definition varies with different duties and thus lacks univ
Externí odkaz:
https://doaj.org/article/ee861837a01d4457b2715b60322c1170
Publikováno v:
Shock and Vibration, Vol 2022 (2022)
Quasi-zero-stiffness (QZS) structures offer substantial practical benefits for facilitating the essential support and isolation of vibrational source loads aboard modern marine vessels. In order to design a compact QZS system of high bearing capacity
Externí odkaz:
https://doaj.org/article/e5ed39e271804544bf6c30d34ad6df1c
Publikováno v:
IEEE Access, Vol 7, Pp 16184-16193 (2019)
In this paper, an end-connected conductor-backed coplanar waveguide (CBCPW) balanced bandpass filter and a size reduction one with adjustable multiple transmission zeros have been developed by using the separated electric and magnetic coupling, and q
Externí odkaz:
https://doaj.org/article/c8891d26b0c545408e9a547ddc3007f6
Publikováno v:
IEEE Access, Vol 7, Pp 113578-113588 (2019)
In this paper, a resonator coupling negative group delay (NGD) circuit with resistor-loaded coupled lines is presented firstly, and then an unequal Wilkinson power divider with NGD characteristic is designed by integrating the proposed NGD circuit in
Externí odkaz:
https://doaj.org/article/ac53177abb1c4029bac0fc489d431078
Publikováno v:
Journal of Fungi, Vol 8, Iss 3, p 237 (2022)
Fungal endophytes have been extensively found in most terrestrial plants. This type of plant–microorganism symbiosis generates many benefits for plant growth by promoting nutrient availability, uptake, and resistance to environmental disease or str
Externí odkaz:
https://doaj.org/article/fb853512a4e44455a57419a73d6402ec
Publikováno v:
IEEE Access, Vol 6, Pp 60843-60851 (2018)
A transparent reflectarray antenna integrated with solar cells is presented for satellite communications in the paper. The electromagnetic characteristics of solar cells at Ka-band are investigated, and a sub-wavelength X-shaped dipole element is des
Externí odkaz:
https://doaj.org/article/fe1991a7ebe04a468a90ea3cba96998e
Autor:
Hai-Peng Fu, Chuang Yang, Kai-Xue Ma, Hui Huang, Jian-Guo Ma, Ya-Li Li, Yan-Ru Kang, Jun-Xiao Ma, Xiang-Dong Huang
Publikováno v:
AIP Advances, Vol 8, Iss 8, Pp 085110-085110-6 (2018)
A carbon nanotube (CNT) film on a substrate is characterized at millimeter waves (220 GHz−330 GHz) by metal rectangular waveguide scattering parameters (S-parameters) measurements. The anisotropy of the CNT film is investigated for different orient
Externí odkaz:
https://doaj.org/article/7543cd027c944405a83ccfdbd67741cb
Publikováno v:
Acta Mechanica. 233:5199-5214