Results 21 to 30 of about 3,443,035 (308)

High Temperature Effectiveness of Ginger Extract as Green Inhibitor for Corrosion in Mild Steel

open access: yesNUST Journal of Engineering Sciences, 2019
Corrosion is one of the major problems of mild steels in acidic medium. This can be minimized by the application of corrosion inhibitors, however; the most of inhibitors are toxic in nature. Therefore inhibitors from green sources are highly desirable to
Muhammad Sohail   +3 more
doaj   +1 more source

Polarimetric Imaging in the Environment Containing Medium and Object

open access: yesFrontiers in Physics, 2022
Polarimetric imaging has been studied and applied to the problem of visibility restoration in various scenarios such as haze, mist and underwater. Although studies have shown that under certain conditions, circular polarimetric imaging has certain ...
Daqian Wang   +3 more
doaj   +1 more source

Four-zone reflective polarization conversion plate [PDF]

open access: yes, 2014
The work was partially funded by the Russian Foundation Basic Research grants ## 13-07-97008, 14-07-31092, and 14-07-97039, the Russian Federation Presidential grant for state support of young Russian scientists with Candidate's degree MK-4816.2014.2 ...
L. O'Faolain   +7 more
core   +1 more source

Twisted Hi-Bi fiber DFB lasers with controllable output polarization [PDF]

open access: yes, 2012
We demonstrate that single polarization, hi-bi fiber DFB lasers are in general characterized by elliptical state of polarization, due to the in-built fiber birefringence axis rotation.
Wilmshurst, R.   +2 more
core   +2 more sources

Linear Polarization Properties of Parsec-Scale AGN Jets

open access: yesGalaxies, 2017
We used 15 GHz multi-epoch Very Long Baseline Array (VLBA) polarization sensitive observations of 484 sources within a time interval 1996–2016 from the MOJAVE program, and also from the NRAO data archive.
Alexander B. Pushkarev   +6 more
doaj   +1 more source

Estimation of the Degree of Polarization for Hybrid/Compact and Linear Dual-Pol SAR Intensity Images: Principles and Applications [PDF]

open access: yes, 2013
Analysis and comparison of linear and hybrid/compact dual-polarization (dual-pol) synthetic aperture radar (SAR) imagery have gained a wholly new importance in the last few years, in particular, with the advent of new spaceborne SARs such as the Japanese
Shirvany, Reza   +2 more
core   +1 more source

Linearly polarized field of a flat aperture

open access: yesФизика волновых процессов и радиотехнические системы, 2023
The article analyzes a flat circular aperture and proposes to use a new analytical expression that describes the radiation pattern of an elementary radiator of an antenna aperture depending on time and integration angle.
Sergey P. Skulkin   +4 more
doaj   +1 more source

Compact and Low-Profile Linear-/Circular-Polarization Dielectric Resonator Antennas With Extended Bandwidths

open access: yesIEEE Open Journal of Antennas and Propagation, 2022
The dielectric resonator antenna (DRA) with wide bandwidth, compact size and low profile is considered as an attractive candidate for 5G wireless communications. However, most of the reported DRAs either have bulky volumes or have limited bandwidths.
Jie-Er Zhang   +4 more
doaj   +1 more source

Reconfigurable Antennas Based on Pure Water

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
This paper is concerned with the design of reconfigurable antennas based on pure water. Being a transparent, flexible, and readily available liquid, pure water can form a cylindrical stream that can be used to guide a leaky electromagnetic wave.
Changzhou Hua   +6 more
doaj   +1 more source

Conceptual Design of a Semi-Dual Polarized Monopulse Antenna by Computer Simulation

open access: yesApplied Sciences, 2023
Presented in this paper is a conceptual design by computer simulation of a monopulse reflector antenna with dual-circularly polarized sum patterns and linearly polarized azimuth and elevation difference patterns, which can be called a semi-dual polarized
Ayodeji Matthew Monebi   +4 more
doaj   +1 more source

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