Results 101 to 110 of about 2,253,897 (339)

Switchable linear to circular polarization conversion in reflection and transmission modes based on vanadium-dioxide

open access: yesScientific Reports
A design of a switchable dual-mode linear-to-circular polarization converter (LTC-PC) in the terahertz (THz) band is reported based on vanadium dioxide (VO2).
Eman M. Eldesouki   +1 more
doaj   +1 more source

New Polarization Basis for Polarimetric Phased Array Weather Radar: Theory and Polarimetric Variables Measurement

open access: yesInternational Journal of Antennas and Propagation, 2012
A novel scheme is developed for mitigating measurement biases in agile-beam polarimetric phased array weather radar. Based on the orthogonal Huygens source dual-polarized element model, a polarization measurement basis for planar polarimetric phased ...
Jian Dong, Qingfu Liu, Xuesong Wang
doaj   +1 more source

High-Isolation Dual-Polarized Microstrip Antenna via Substrate Integrated Waveguide Technology [PDF]

open access: yes, 2014
A dual-polarized microstrip antenna with high-isolation is proposed by the utilization of the substrate-integrated waveguide (SIW) technology. According to the SIW technology, the metalized holes (MHs) are inserted into the substrate for the proposed ...
Cao, Xiangyu   +3 more
core   +1 more source

Incorporation of Selenium into Sol–Gel‐Derived Bioactive Glass: Influence on Glass Structure, Bioactivity, and its Selective Cytotoxicity

open access: yesAdvanced Engineering Materials, EarlyView.
Selenium was incorporated into a sol–gel‐derived bioactive glass to enable sustained therapeutic ion release. The selenium‐containing glass preserved bioactivity while selectively inducing cytotoxicity in osteosarcoma cells and maintaining osteoblastic viability.
Breno Rocha Barrioni   +7 more
wiley   +1 more source

Dual-Circularly Polarized 60 GHz Beam-Steerable Antenna Array with 8 × 8 Butler Matrix

open access: yesApplied Sciences, 2020
A beam-steerable dual-circularly polarized 60 GHz antenna array is proposed. A 1 × 4 dual-fed stacked patch antenna array is integrated with an 8 × 8 Butler matrix.
Yuntae Park, Jihoon Bang, Jaehoon Choi
doaj   +1 more source

Vegetable classification in Indonesia using Dynamic Time Warping of Sentinel-1A dual polarization SAR time series

open access: yesInternational Journal of Applied Earth Observation and Geoinformation, 2019
This study investigates the potential of Sentinel-1A (S1A) dual polarization SAR time series data for vegetable classification in Indonesia. Vegetables are characterized by the temporal changes of observables extracted from time series of S1A data.
Mengmeng Li, W. Bijker
semanticscholar   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li   +5 more
wiley   +1 more source

Dual‐Polarization Phased Array Radar Observations of Quasi‐Linear Convective System Tornadic Mesovortices

open access: yesGeophysical Research Letters
Quasi‐linear convective system (QLCS) mesovortices produce a non‐trivial fraction of tornadoes across the United States each year. Tornadoes from QLCS mesovortices evolve rapidly on time scales less than that observed by conventional weather radars.
A. Addison Alford   +2 more
doaj   +1 more source

Polarization and DOA Estimation Based on Dual-Polarized Conformal Array

open access: yesInternational Journal of Antennas and Propagation, 2019
A dual-polarized multiple signal classification (DP-MUSIC) algorithm is presented to estimate the arrival directions and polarizations for a dual-polarized conformal array.
Chao Liu   +3 more
doaj   +1 more source

Airborne aerosol lidar [PDF]

open access: yes
The objectives are: to analyze dual polarization lidar measurements of aerosols and polar stratospheric clouds (PSCs) obtained aboard the NASA Ames DC-8 aircraft during the 1989 Airborne Arctic Stratospheric Expedition (AASE); and to combine lidar, SAM ...
Mccormick, M. Patrick, Poole, Lamont R.
core   +1 more source

Home - About - Disclaimer - Privacy