Articles with "dual frequency" as a keyword



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Dual-frequency resonant coil design for low-γ X-nuclear and proton magnetic resonance imaging at ultrahigh field.

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Published in 2023 at "NMR in biomedicine"

DOI: 10.1002/nbm.4930

Abstract: Low-γ X-nuclear MRS and imaging have played a key role in studying metabolism and physiopathology, especially at ultrahigh fields. We design and demonstrate a novel and simple dual-frequency RF resonant coil that can operate at… read more here.

Keywords: dual frequency; frequency resonant; resonant coil; low nuclear ... See more keywords
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Capturing coseismic displacement in real time with mixed single- and dual-frequency receivers: application to the 2018 Mw7.9 Alaska earthquake

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Published in 2018 at "GPS Solutions"

DOI: 10.1007/s10291-018-0794-y

Abstract: High-density GPS monitoring networks have been built in seismically active areas to obtain high-precision real-time seismic displacements with high spatial resolution, which is necessary for rapid source inversion and decreasing the blind zone for earthquake… read more here.

Keywords: dual frequency; real time; frequency; time ... See more keywords
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An efficiency optimal dual-frequency constant-envelope multiplexing technique for GNSS signals

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Published in 2019 at "GPS Solutions"

DOI: 10.1007/s10291-019-0862-y

Abstract: With the development of global navigation satellite systems (GNSSs), an increasing number of navigation signals are broadcast to provide diversified services for users. In order to save payload resources, multiple signals are required to be… read more here.

Keywords: technique; dual frequency; frequency cem; frequency ... See more keywords
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Estimation of ionospheric gradients and vertical total electron content using dual-frequency NAVIC measurements

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Published in 2019 at "Astrophysics and Space Science"

DOI: 10.1007/s10509-019-3535-y

Abstract: Indian Space Research Organization is being developing a regional satellite radio navigation system known as Navigation with Indian Constellation (NAVIC) satellite system to cater positioning, navigation and timing application. NAVIC has the capability to transmit… read more here.

Keywords: dual frequency; gradients vertical; vertical total; ionospheric gradients ... See more keywords
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The synthesis of C, N-codoped TiO2 hollow spheres by a dual-frequency atmospheric pressure cold plasma jet

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Published in 2019 at "Journal of Materials Science"

DOI: 10.1007/s10853-019-03804-1

Abstract: Titanium dioxide has been widely applied in many fields, but the photon utilization efficiency of it was low because of the wide band gap, amounting to 3.2 eV. Many studies have shown that doping TiO2… read more here.

Keywords: dual frequency; codoped tio2; microscopy; plasma jet ... See more keywords
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Dual-frequency SIW-based cavity-backed antenna

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Published in 2018 at "AEU - International Journal of Electronics and Communications"

DOI: 10.1016/j.aeue.2018.10.019

Abstract: Abstract In this paper, a substrate integrated waveguide (SIW) cavity-backed slot antenna is presented for a dual-frequency operation. In the proposed design, a pair of triangular-complementary-split-ring slots is used for radiation. These slots are found… read more here.

Keywords: dual frequency; frequency siw; cavity backed; cavity ... See more keywords
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An asynchronous dual-frequency induction heating process for bevel gears

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Published in 2020 at "Applied Thermal Engineering"

DOI: 10.1016/j.applthermaleng.2020.114981

Abstract: Abstract For parts with complex structures such as bevel gears, electromagnetic heating is an environmental friendly heat-treatment method of high efficiency. However, since high-frequency induction heating is restricted by the unique rung and proximity effects,… read more here.

Keywords: dual frequency; frequency induction; frequency; induction heating ... See more keywords
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Design of dual-frequency transmission lines for the ECRH system on HL–2M

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Published in 2017 at "Fusion Engineering and Design"

DOI: 10.1016/j.fusengdes.2017.04.103

Abstract: Abstract To carry out research related to electron cyclotron waves, 6 MW ECRH system including four 105 GHz/1 MW/2s and two 140 GHz/1 MW/3s units will be developed on the HL–2M tokamak being built in the first stage.… read more here.

Keywords: dual frequency; transmission; ecrh system; transmission lines ... See more keywords
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ECRH system upgrade design using dual frequency gyrotrons for EAST

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Published in 2021 at "Fusion Engineering and Design"

DOI: 10.1016/j.fusengdes.2020.112222

Abstract: Abstract The ECRH (Electron Cyclotron Resonance Heating) system was used in the EAST (Experimental Advanced Superconducting Tokamak) experiments for several years, and some good experimental results have been obtained. However, the performance of the gyrotrons… read more here.

Keywords: system; using dual; frequency; dual frequency ... See more keywords
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Measurement of water content of oil-water two-phase flows using dual-frequency microwave method in combination with deep neural network

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Published in 2019 at "Measurement"

DOI: 10.1016/j.measurement.2018.08.028

Abstract: Abstract This paper presents a microwave dual frequency correction algorithm to measure the water content of the oil-water two-phase flows, which can eliminate the influence of conductivity and obtain the water content. Subsequently, based on… read more here.

Keywords: neural network; water; deep neural; dual frequency ... See more keywords
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Mechanically tunable dual frequency THz metamaterial filter

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Published in 2018 at "Optics Communications"

DOI: 10.1016/j.optcom.2018.06.019

Abstract: Abstract A mechanically tunable dual frequency THz metamaterial (MM) filter is proposed in this paper. The filter is composed of two individual U-shaped MMs separated by a certain distance. The resonance frequencies can be tuned… read more here.

Keywords: dual frequency; mechanically tunable; thz; tunable dual ... See more keywords