Results 141 to 150 of about 7,981,538 (380)
Надежность и качество сложных системBackground. In radio engineering systems for various purposes, microwave antennas with a radiation pattern of a sector type are used to solve problems at maximum ranges in a wide range of angles.
A.N. Yakimov
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Microstrip Patch Antenna for GNSS Applications
Applied SciencesThis research paper presents the results of an analysis conducted on a microstrip patch antenna designed to operate within the 1.559–1.591 GHz frequency band, which encompasses three major satellite constellations: GPS, Galileo and BeiDou.
Hatice-Andreea Topal +1 more
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2D Optimal Trajectory Planning Problem in Threat Environment for UUV with Non-Uniform Radiation Pattern. [PDF]
Sensors (Basel), 2021 Galyaev AA, Lysenko PV, Yakhno VP.
europepmc +1 more source
Arthritis Care &Research, EarlyView.Objective The objectives of this study were to evaluate the correlation and agreement between ultrasonography and computed tomography (CT) in measuring ascending aorta diameter in patients with giant cell arteritis (GCA) and to investigate the development of new ascending aortic aneurysms in patients with newly diagnosed GCA.
Anne C. Bull Haaversen +4 more
wiley +1 more source
MODIFIED TRANSMISSION LINE MODEL EQUATIONS FOR MICROSTRIP ANTENNA DESIGN
Academy Journal of Science and Engineering, 2022 Microstrip antennas are becoming more and more popular as the drive towards miniaturization continues. Therefore, the need for accurate models is growing.
Nyitamen, Dominic S, Agbendeh, Simon T
doaj
The temporal structure of RF radiation from lightning [PDF]
Radiation from lightning in the RF band from 3-300 MHz has been examined. Simultaneous measurements were made of the RF radiation from lightning together with records of fast and slow field changes.
Levine, D. M.
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Advanced Engineering Materials, EarlyView.Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello +5 more
wiley +1 more source
Radiation Pattern Synthesis Using Partially Reactively Loaded Antenna Array
IEEE Open Journal of Antennas and PropagationThis work proposes a method for the synthesis of the shape of the whole radiation pattern at a single frequency using a partially reactively loaded antenna array.
Samuel Travnicek +2 more
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Trailing edge noise data with comparison to theory [PDF]
The noise emission generated by the passage of a turbulent airstream over the trailing edge of a semi-infinite plate was measured over a large range of airstream velocity and plate geometry.
Boldman, D., Olsen, W.
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Advanced Engineering Materials, EarlyView.This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar +6 more
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