microwave-technology-2020
Microwave is a line-of-sight wireless communication technology that uses high frequency beams of radio waves to provide high speed wireless connections that can send and receive voice, video, and data information.
KINETICS OF COPPER DISSOLUTION FROM LOW GRADE MINE TAILINGS SUBJECTED TO MICROWAVE PRE-TREATMENT
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The extraction of copper from chalcopyrite contained in mine tailings is investigated. Dry mine tailings of a particle size of 75 µm are used in this study. The leaching process includes pre-heating of the mine tailings in a domestic microwave oven for 6 min followed by leaching
Syngas Formation by Microwave -induced Platinum/Palladium/Rhodium Spent Catalyst
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A platinum/palladium/rhodium (Pt/Pd/Rh) spent catalyst (Pt/Pd/Rh ratio of about 0.16/0.001/0.01 wt%) supported on MgO Al2O3 SiO2 as the main carrier was studied in the methane partial oxidation process. By utilizing the characteristics of microwave selectivity to
Microwave Assisted Synthesis of Graphene/SnO2 Nanocomposite and its Structural, Dielectric and Electrical Properties
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Graphene-metal nanocomposites are the best candidates for the greater sensitivity for various applications. We have prepared Graphene-Tin Oxide (G/SnO2) nanocomposite by using facile eco-friendly Anton-Paar microwave synthesis reactor method. X-ray diffraction
Syngas Formation by Nickel and Iron Catalysts for Partial Oxidation of Methane with Microwave Assistance
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In this study, microscale nickel (Ni, 0.33 wt%) and iron (Fe, 0.26 wt%) catalysts coated on cordierite particles were used in the partial oxidation of methane to form syngas by a microwave -assisted process. Microwave treatment can be applied by coupling with
Microwave Miniature Coaxial Reactors for On-Demand Material Synthesis
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n this contribution, microwave -assisted heating of reference alcohols in miniature coaxial waveguide reactors is studied both experimentally and in simulations. The advantages and disadvantages of heating in the coaxial reactors are considered, and the techniques of
Comparison of Advanced Technology Microwave Sounder Biases Estimated Using Radio Occultation and Hurricane Florence (2018) captured by NOAA-20
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ABSTRACT The second Advanced Technology Microwave Sounder (ATMS) was onboard the National Oceanic and Atmospheric Administration (NOAA)-20 satellite when launched on 18 November 2017. Using nearly six months of the earliest NOAA-20 observations, the
Comparative analysis of drying coffee beans using microwave and conventional oven.
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This article reports a comparative study of experimental results obtained during the drying of Castilla-variety coffee beans from Santander, Colombia. They were performed by two means: thermal and electromagnetic radiation. Twenty experiments were carried out, ten
Special Section on Microwave and Millimeter-Wave Technologies
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Microwave and millimeter-wave technology plays a crucial role as a means of communication in modern society. Microwave and quasi-millimeter wave bands have been allocated for the 5th generation mobile communication system (5G) in Japan, which is
A compact and ultrastable photonic microwave oscillator
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Frequency comb synthesized microwaves have been so far realized with tabletop systems, operated in wellcontrolled environments. Here we demonstrate state-ofthe-art ultrastable microwave synthesis with a compact rack-mountable apparatus. We present absolute phase
Measurement Characteristics of an airborne Microwave Temperature Profiler (MTP)
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The Microwave Temperature Profiler (MTP), an airborne passive microwave radiometer, records radiances in order to estimate temperature profiles around flight altitude. From these data the state of the atmosphere can be derived and important dynamical processes (eg
A Self-biased Adaptive Reconfigurable Rectenna for Microwave Power Transmission
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A self-biased adaptive reconfigurable rectenna, consisting of a microstrip patch antenna and a self-biased reconfigurable rectifying circuit, is proposed. To eliminate the need of bias networks, a DC power routing structure is introduced to link the reconfigurable matching stub
Effect of microwave ablation treatment of a hepatic malignancy on serum cytokine levels.
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Background Microwave ablation (MWA) is widely used to treat unresectable primary and secondary malignancies of the liver, and a limited number of studies indicate that ablation can cause not only necrosis at the in situ site but also an immunoreaction of the whole body
Excellent microwave absorption properties of partially substituted SrW-type hexaferrites in the Ka band (26.5 40 GHz)
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It has been a challenging task to achieve an excellent microwave absorber in Ka band (26.5 40 GHz) which can exhibit the reflection loss (RL) less than-20. Such excellent microwave absorbers in Ka band are obtainable from partially substituted Strontium W-type (SrW)
Comparison of the Sentinel-1B Synthetic Aperture Radar with Airborne Microwave Sensors in an Extra-Tropical Cyclone
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Amhersts Imaging Wind and Rain Airborne Profiler (IWRAP) was flown on a National Oceanic and Atmospheric Administration (NOAA) WP-3D Hurricane Hunter aircraft under the direction of scientists from STAR at NOAA/NESDIS over the North Atlantic ocean out of
Estimating fractional snow cover from passive microwave brightness temperature data using MODIS snow cover product over North America
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The dynamic characteristics of seasonal snow cover are critical for hydrology management, climate system, and ecosystem function. Although optical satellite remote sensing has proved to be an effective tool for monitoring global and regional variations of snow cover, it
Assessing the viability of silicate nanoclusters as carriers of the anomalous microwave emission: A quantum mechanical study
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Nanosized silicate dust is likely to be abundant in many astronomical environments and it is a prime candidate for being the source of the Anomalous Microwave Emission (AME). To assess the viability of silicate nanoclusters as AME carriers, their detailed properties need to
MATRIX ASSISTED LASER VAPORIZATION OF BIOMOLECULES FOR FOURIER-TRANSFORM MICROWAVE SPECTROSCOPY MICHAEL J. TUBERGEN
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Laser ablation has previously been coupled with Fourier-transform microwave spectrometers to record rotational spectra of metal oxides, metal halides, carbonyl metal halides, as well as amino acids. We report here on the construction of a new Fourier
Two physical realizations of regular phase coherent states: Ry-dberg atoms in a microwave field; and two quantized circularly polarized radiation modes
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In studying the quantum phase properties of electromagnetic radiation fields, recently we have derived the regular phase coherent states parametrized by complex numbers in the unit disc 1. They are in fact SU ( 1) coherent states, introduced earlier by Perelomov 2 in a