Results 281 to 290 of about 21,717,715 (348)
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A Novel Design of a Compact Frequency-Selective Surface With High Selectivity and Angular Stability
IEEE Microwave and Wireless Components Letters, 2022A novel bandpass frequency-selective surface (FSS) with high selectivity and angular stability is presented. In the skirts of the narrow passband, two transmission zeros (TZs) are generated, leading to the steep roll-offs at both left and right skirts ...
Xinjie Zhou +6 more
semanticscholar +1 more source
High-Selectivity Frequency-Selective Rasorber Based on Low-Profile Bandpass Filter
IEEE Antennas and Wireless Propagation Letters, 2021A frequency-selective rasorber (FSR) with a high selectivity transmission passband and two absorption bands is proposed in this letter. The design method is introduced based on the equivalent circuit model (ECM).
Hang Ye +5 more
semanticscholar +1 more source
High-Selectivity Filtering Patch Antennas Based on MultiPath Coupling Structures
IEEE transactions on microwave theory and techniques, 2021In this article, we present a design method of high-selectivity filtering antennas based on a dual-probe feeding structure. The first stage of the filtering circuit consists of two or three coupled resonators which are then coupled to the radiating patch
Kai‐Ran Xiang +3 more
semanticscholar +1 more source
High-Speed Biplane Selective Angiocardiography
Archives of Pediatrics & Adolescent Medicine, 1958Selective angiocardiography with the exposure of multiple films in rapid sequence in two planes offers many advantages over simple venous angiocardiography. Not only by itself is it a more accurate technique, but, since it depends completely upon the placement of a catheter, the combination of this procedure and cardiac catheterization complement each ...
L A, DAVIS, L, LEIGHT, E L, PIRKEY
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Accounts of Chemical Research, 2021
ConspectusSyngas conversion is a key platform for efficient utilization of various carbon-containing resources including coal, natural gas, biomass, organic wastes, and even CO2.
Tiejun Lin +7 more
semanticscholar +1 more source
ConspectusSyngas conversion is a key platform for efficient utilization of various carbon-containing resources including coal, natural gas, biomass, organic wastes, and even CO2.
Tiejun Lin +7 more
semanticscholar +1 more source
Natural Selection and High Heels
Foot & Ankle International, 1999EDITORIAL COMMENT This new section of the journal has been added to provide readers with a broader contact with specific information. In many cases, information which is of interest to the reader but does not conform to the strict peer review guidelines is available.
E O, Smith, W S, Helms
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High Selectivity and High Gain X-Band Waveguide Filtering Antenna Based on Triple-Mode Resonator
IEEE Transactions on Antennas and Propagation, 2021In this communication, a high-selectivity and high-gain filtering slot antenna operating in $X$ -band is designed based on a triple-mode cavity resonator.
Kai‐Ran Xiang, Fulong Chen, Q. Chu
semanticscholar +1 more source
ACS Applied Energy Materials, 2021
Silver (Ag) catalysts enable high selectivity (>90%) in CO2-to-CO conversion at >100 mA cm −2; gold (Au) catalysts are active at lower overpotential, but with lower selectivity (490 mA cm−2 in a flow cell.
A. Ozden +7 more
semanticscholar +1 more source
Silver (Ag) catalysts enable high selectivity (>90%) in CO2-to-CO conversion at >100 mA cm −2; gold (Au) catalysts are active at lower overpotential, but with lower selectivity (490 mA cm−2 in a flow cell.
A. Ozden +7 more
semanticscholar +1 more source
High-Selectivity, High-Flux Silica Membranes for Gas Separation
Science, 1998Process improvements in silica membrane fabrication, especially the use of clean-room techniques, resulted in silica membranes without detectable mesoscopic defects, resulting in significantly improved transport properties. Supported membranes calcined at 400°C were 30 nanometers in thickness, showed a H 2 permeance
de Vos, R.M., Verweij, H.
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IEEE Transactions on Antennas and Propagation, 2020
In this communication, a novel dual-band dual-polarized filtering antenna with high selectivity is proposed. By etching four slots at each side of a square radiating patch, dual operation bands as well as a natural radiation null between the two bands ...
Yapeng Li +3 more
semanticscholar +1 more source
In this communication, a novel dual-band dual-polarized filtering antenna with high selectivity is proposed. By etching four slots at each side of a square radiating patch, dual operation bands as well as a natural radiation null between the two bands ...
Yapeng Li +3 more
semanticscholar +1 more source