Results 1 to 10 of about 526,377 (298)
Design of Wideband High-Gain Patch Antenna Array for High-Temperature Applications
Sensors, 2023 A low-profile, wideband, and high-gain antenna array, based on a novel double-H-shaped slot microstrip patch radiating element and robust against high temperature variations, is proposed in this work.
Ruibo Li +7 more
doaj +1 more source
Progress and Challenges in Electromechanical Coupling of Radio Telescopes
International Journal of Antennas and Propagation, 2022 Radio astronomy is a discipline of dynamics and wonders. The vast universe has many secrets to unravel. As one of the important facilities in this discipline, radio telescopes play a key role in collecting astronomical data and unraveling mysteries. With
Yuefei Yan +9 more
doaj +1 more source
Miniaturised element frequency selective surface design for high power microwave applications
IET Microwaves, Antennas & Propagation, 2023 A third‐order miniaturised element frequency selective surface (MEFSS) for high‐power microwave (HPM) systems is proposed. The MEFSS design is characterised by the excellent capability to handle high‐power waves and the stable frequency response at large
Kai Wu +4 more
doaj +1 more source
Tribological and dry drilling performance of WS2/Cr-AlCrN coatings
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2021 Dry drilling gives a higher request to the anti-friction property of cutting tools. However, most tool coatings commonly have less lubricant effect. In present paper, WS2/Cr layer was deposited on AlCrN layer by a radio frequency magnetron sputtering ...
Shipeng LI +4 more
doaj +1 more source
Energies, 2023 Sustainability and resilience are major challenges for the building sector in order to meet energy efficiency and low carbon emissions goals. Based on the defined and quantified targets of the EU climate change policy, Renewable Energy Systems (RESs) are
Effrosyni Giama +3 more
doaj +1 more source
International Journal of Lightweight Materials and Manufacture, 2023 Sustainable cooling/lubrication strategies including dry, minimum quantity lubrication (MQL), cryogenic (LN2) and hybrid (MQL and LN2) were used in ultrasonic vibration helical milling (UVHM) machining to improve the performance of hole-making for CFRP ...
Jiale Wang +5 more
doaj +1 more source
Current-injected photovoltaic array for concentrated space solar power station
Frontiers in Energy Research, 2023 In this article, the power generation of a concentrated space solar power station (SSPS) is enhanced by current-injected total-cross-tied (TCT-CI) photovoltaic (PV) array.
Xintong Li +6 more
doaj +1 more source
Design and Optimization of a Micron-Scale Magnetoelectric Antenna Based on Acoustic Excitation
Micromachines, 2022 The development of antenna miniaturization technology is limited by the principle of electromagnetic radiation. In this paper, the structure size of the antenna is reduced by nearly two orders of magnitude by using Acoustic excitation instead of ...
Na Li +4 more
doaj +1 more source
SAFER DESIGN OF ANAESTHETIC EQUIPMENT
British Journal of Anaesthesia, 1987 Peter Thompson
openaire +4 more sources
Design, Analysis, and Experiment of a Wheel-Legged Mobile Robot
Applied Sciences, 2023 In this paper, a wheel-legged mobile robot is proposed. The parameter design of the wheel-leg structure is completed using geometric analysis and statics modeling.
Jinfu Li +6 more
doaj +1 more source