Results 51 to 60 of about 13,209,149 (311)

Combining measurements, models and decision support systems to optimize outfall sitting [PDF]

open access: yesRevista DAE, 2016
Santa Catarina Island is located in Southern Brazil and is a touristic spot of the country due to its beautiful beaches. Population growth and seasonal variability demand an improved sanitation system, to be provided by the local government.
Tobias Bleninger   +6 more
doaj   +1 more source

A Comprehensive Comparison of Far-Field and Near-Field Imaging Radiometry in Synthetic Aperture Interferometry

open access: yesRemote Sensing
Synthetic aperture interferometry (SAI) is a signal processing technique that mixes the signals collected by pairs of elementary antennas to obtain high-resolution images with the aid of a computer.
Eric Anterrieu   +2 more
doaj   +1 more source

UAV-Based Antenna Measurements for Polarimetric Weather Radars: Probe Analysis

open access: yesIEEE Access, 2020
One of the principal challenges in the calibration of polarimetric weather radars is achieving the strict requirements in the measurement of the antenna radiation pattern of the system; e.g., a co-polarization mismatch of at most 0.1 dB, and cross ...
Arturo Y. Umeyama   +2 more
doaj   +1 more source

Modal Analysis of Pseudo-Schell Model Sources

open access: yesPhotonics, 2021
All pseudo-Schell model sources have been shown to possess the same continuous set of circularly symmetric modes, all of them presenting a conical wavefront.
Massimo Santarsiero   +4 more
doaj   +1 more source

Far-field Metamaterial Superlens

open access: yesConference on Lasers and Electro-Optics, 2018
We demonstrate a radically new type of metamaterial ‘super-lens’ that exploits the phenomenon of super-oscillations, giving a smallest hotspot size of 0.33λ and effective numerical aperture as high as 1.52 in air.
Yuan, Guanghui   +3 more
openaire   +2 more sources

A Bibliometric Analysis of Publications in Uremic Toxins From 1991 to 2024

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Uremic toxins are a growing area of research in nephrology, with significant implications in the progression and treatment of chronic kidney disease (CKD) and the management of end‐stage kidney disease (ESKD). This bibliometric analysis aims to evaluate the global research trends, key contributors, and the impact of publications in ...
Yuh‐Shan Ho   +7 more
wiley   +1 more source

Precise mode control of mid-infrared high-power laser diodes using on-chip advanced sawtooth waveguide designs

open access: yesHigh Power Laser Science and Engineering
Power scaling in conventional broad-area (BA) lasers often leads to the operation of higher-order lateral modes, resulting in a multiple-lobe far-field profile with large divergence.
Jianmei Shi   +15 more
doaj   +1 more source

Far-Field Super-Resolution Imaging of Scatterers With a Time-Reversal System Aided by a Grating Plate

open access: yesIEEE Photonics Journal, 2017
A time-reversal imaging system for far-field super-resolution imaging of scatterers is proposed. First, a grating plate, similar to the optical far-field super lens, is designed to convert near-field evanescent waves to propagative waves with wavevector ...
Zhi-Shuang Gong   +5 more
doaj   +1 more source

Nanophotonic engineering of far-field thermal emitters [PDF]

open access: yesNature Materials, 2018
Thermal emission is a ubiquitous and fundamental process by which all objects at non-zero temperatures radiate electromagnetic energy. This process is often assumed to be incoherent in both space and time, resulting in broadband, omnidirectional light ...
D. Baranov   +5 more
semanticscholar   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

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