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761
High Gain Superstrate Loaded Membrane Antenna Based on Substrate Integrated Waveguide Technology
Published 2015-01-01“…The results are verified using CST Microwave Studio and are found to be in good agreement.…”
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762
A New Method for Synthesis of Poly(2,6-dimethyl-1,4-phenylene oxide) and Poly(2,6-diphenyl-1,4-phenyl oxide)
Published 2013-01-01“…The polymerization of two monomers 2,6-dimethylphenol and 2,6-diphenylphenol was carried out by an oxidative route in the presence of Cu(I) as a catalyst and amine complex as a solvent assisted by microwave heating. The synthesized polymers were characterized by NMR spectroscopy, differential scanning calorimetry (DSC), and gel permeation chromatography (GPC). …”
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763
Solvent-free Synthesis of Nitriles from Aldehydes Catalyzed by KF/Al2O3, Montmorillonite KSF and K10
Published 2006-01-01“…Multistep and one-pot conversion of aldehydes to nitriles were carried out conveniently with out solvent using KF/Al2O3, montmorillonite KSF and K10 as catalyst, under microwave irradiation. The reactions are completed within 6-8 min to give satisfactory yields. …”
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764
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765
UHF Metamaterial Absorber with Small-Size Unit Cell by Combining Fractal and Coupling Lines
Published 2018-01-01“…Due to the small ratio, it can be widely used in radiation suppression for microwave relay communication such as mobile communication and wireless network by changing the parameters of the structure.…”
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766
Mechanical Properties of Phenolic Composites Reinforced with Flax-g-copolymers Prepared under Different Reaction Conditions - A Comparative Study
Published 2008-01-01“…Graft copolymers of methyl methacrylate (MMA) and its binary mixtures such as MMA + ethyl acrylate (EA), MMA + acrylonitrile (AN), MMA + acrylic acid (AA), MMA + vinyl acetate (VA), MMA + acrylamide (AAm) and MMA + styrene (Sty) with flax fiber have been prepared in air (IA) and under the influence of microwave radiations (MWR). Synthesized flax-g-copolymers under two different reaction conditions were used as reinforcing material in the preparation of phenol-formaldehyde composites. …”
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767
Survey of the research and development on the maritime communication technology
Published 2022-05-01“…With the increasing frequency of maritime activities, the development of the maritime communication technology plays an important role.However, due to the complex and changeable maritime environment and the inconsistent communication system standards, the development of maritime communications has significantly lagged.Firstly, maritime communications were divided into four main components, including airspace, land, sea, and crossdomain coordination, according to the difference in communication methods.Then, the development process and research status on a global scale were summarized from the industrial and academic perspectives.Moreover, the main problems existing in the maritime communication were analyzed based on the connections and differences between the different systems.Finally, the technical challenges in the new generation of maritime communication systems were specifically elaborated, including the study of wave motion models learning, maritime channel modeling, atmospheric duct effects, and microwave scattering effects.…”
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768
Novel Directional Nanoantennas for Single-Emitter Sources and Wireless Nano-Links
Published 2012-01-01“…The nanoantenna design is based on the travelling wave principle, well known at RF/microwave frequencies. By properly designing the propagating parts of the nanoantenna, a very efficient coupling to free space wave impedance can be achieved. …”
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769
A Revised Protecting Group Strategy Enables a Divergent Synthesis of Prenylated Isoflavones from Psoralea corylifolia
Published 2025“…Three bioactive prenylated isoflavone natural products were synthesized for the first time, using a combination of Pd-catalyzed Suzuki–Miyaura coupling for installing the B-ring, microwave-promoted Claisen rearrangement of allyl ethers, and Ru-catalyzed olefin cross me tathesis for obtaining the prenyl substituents. …”
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770
Algorithm for Cloud Particle Phase Identification Based on Bayesian Random Forest Method
Published 2025-01-01“…Results in a high rate of misclassification when employing machine learning techniques for identifying the phase state of cloud particles.To accurately identify phases of cloud particles, a Bayesian Random Forest Method is employed, utilizing co-located millimeter-wave cloud radar and microwave radiometer observations. Models are established separately for rainy and non-rainy weather conditions, utilizing the cloud radar's reflectivity factor, spectral width of velocity, radial velocity, and depolarization ratio, as well as the microwave radiometer's vertical temperature profile and the altitude of each parameter. …”
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771
Ultra robust negative differential resistance memristor for hardware neuron circuit implementation
Published 2025-01-01Get full text
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772
Numerical Analysis of the Fractional-Order Telegraph Equations
Published 2021-01-01“…High-frequency telecommunications continuously receive significant attention in the industry due to a slew of radiofrequency and microwave communication networks. These technologies use transmission media to move information-carrying signals from one location to another. …”
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773
Broadband absorber with dispersive metamaterials
Published 2023-03-01“…A broadband absorber that utilizes a dispersive metamaterial and covers the entire microwave X-band (8–12 GHz) is proposed in the present study. …”
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774
A Compact CPW-Fed UWB Antenna with Dual Band-Notched Characteristics
Published 2013-01-01Get full text
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775
Catalytic Chemical Recycling of Post-Consumer Plastics: A Review
Published 2025-01-01“…The study explored various catalytic methods, including microwave-assisted, plasma-assisted, supercritical water, and photocatalytic conversion, which can yield high-value products. …”
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776
Improved Vlasov Antenna with Curved Cuts and Optimized Reflector Position and Shape
Published 2015-01-01“…This paper presents a Vlasov antenna with curved cut shape and improved reflector position and geometry suitable for high power microwave applications. The curved shape of the proposed cut totally eliminates the sharp edges and angles present in Vlasov antennas with step and bevel cuts. …”
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777
Brane-vector dark matter and its connection to inflation and primordial gravitational waves
Published 2024-12-01“…Interestingly, the brane-vector dark matter could leave particular imprints on the cosmic microwave background (CMB) and the primordial gravitational waves. …”
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778
RF Tomography in Free Space: Experimental Validation of the Forward Model and an Inversion Algorithm Based on the Algebraic Reconstruction Technique
Published 2013-01-01“…Its flexible forward model can be used in free-space by choosing an appropriate dyadic Green's function and can be translated in the microwave domain. Experimental data are used to validate a novel inversion scheme, based on the algebraic reconstruction technique. …”
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779
Nano-ZnO Catalyzed Multicomponent One-Pot Synthesis of Novel Spiro(indoline-pyranodioxine) Derivatives
Published 2014-01-01“…The derivatives are obtained in moderate to excellent yield by one-pot three-component reaction of an isatin, malononitrile/ethylcyanoacetate, and 2,2-dimethyl-1,3-dioxane-4,6-dione in absolute ethanol under conventional heating and microwave irradiation. The catalyst was recovered by filtration from the reaction mixture and reused during five consecutive runs without any apparent loss of activity for the same reaction. …”
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780
Symmetry Breaking as a Basis for Characterization of Dielectric Materials
Published 2025-01-01“…This paper introduces a novel method for measuring the dielectric permittivity of materials within the microwave and millimeter wave frequency ranges. The proposed approach, classified as a guided wave transmission system, employs a periodic transmission line structure characterized by mirror/glide symmetry. …”
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