Results 31 to 40 of about 512,786 (105)

Hyperspectral tomographic diffractive microscopy: Development and applications

open access: yesJournal of Microscopy, EarlyView.
Abstract Tomographic Diffractive Microscopy (TDM) provides label‐free three‐dimensional imaging of transparent samples with resolution surpassing confocal limits. At IRIMAS, successive instrumental developments since 2009 have enhanced TDM capabilities through transmission, reflection, isotropic, polarisation‐sensitive, and dual‐view configurations ...
Leonardo Pestana Legori   +4 more
wiley   +1 more source

Pulse-based internal calibration of polarimetric SAR [PDF]

open access: yes, 1994
Internal calibration greatly diminishes the dependence on calibration target deployment compared to external calibration. Therefore the Electromagnetics Institute (EMI) at the Technical University of Denmark (TUD) has equipped its polarimetric SAR ...
N. Skou   +5 more
core   +1 more source

Polarimetric calibration and its influence on target recognition performance

open access: yes, 2022
Paper 73350ZFully polarimetric radars that use polarization diversity on transmit and receive and thus provide the full scattering matrix, are subject to effects like cross-talk and channel imbalance. These distortions have to be eliminated by means of a
Schimpf, H.
core   +1 more source

Coupling Oxygen‐Enriched Drip Irrigation With an Optimized Nitrogen Rate Improves Yield, Water Productivity and Grain Quality of Winter Wheat: A Two‐Season Field Study

open access: yesJournal of Agronomy and Crop Science, Volume 212, Issue 6, November 2026.
ABSTRACT Drip irrigation displaces soil air at the emitter and transiently depresses dissolved oxygen (DO) in the wetted root zone, and recovery is slow in fine‐textured, slightly saline soils. Whether aeration of the irrigation stream can be combined with nitrogen (N) management to raise water productivity while safeguarding grain quality in winter ...
Qi Xu   +3 more
wiley   +1 more source

Under-Foliage Object Imaging Using SAR Tomography and Polarimetric Spectral Estimators [PDF]

open access: yes, 2012
International audienceThis paper addresses the imaging of objects located under a forest cover using polarimetric synthetic aperture radar tomography (POLTOMSAR) at L-band.
Huang, Yue   +5 more
core   +1 more source

Aerosol Retrieval Over Ocean From DPC‐2/GF‐5(02): Using RemoTAP Extended With a 3‐Parameter Ocean Bio‐Optical Model and Comparisons With a 1‐Parameter Model

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Multi‐angle polarimetric instruments (MAPs) enable the retrieval of essential aerosol properties over oceanic regions. MAPs retrieval algorithms commonly use a 1‐parameter ocean bio‐optical model (OBM), based on chlorophyll‐a concentration only to represent optical properties over open waters (case‐1), whereas the coastal water (mixture of ...
Cheng Fan   +10 more
wiley   +1 more source

The Wessex Convection Experiment (WesCon)–Observing the Evolving Structures of Turbulence (WOEST): Coordinated Aircraft and Ground‐Based Observations of Turbulence and Convection in Southwest England During Summer 2023

open access: yesGeoscience Data Journal, Volume 13, Issue 4, October 2026.
This paper summarises a coordinated field campaign in southern England in summer 2023 as part of the ParaChute programme, which studied atmospheric turbulence to improve weather and climate models. The field campaign used ground‐based instruments, aircraft and drones to observe turbulence and storms, creating datasets to develop better turbulence ...
Sarah L. Barr   +46 more
wiley   +1 more source

Two‐Photon Fluorescence and Second‐Harmonic Generation Microscopy: Principles and Biomedical Applications

open access: yesJournal of Biophotonics, Volume 19, Issue 10, October 2026.
Compared with single‐photon methods, TPM enables deep‐tissue imaging using near‐infrared light, with excitation confined to the focal plane, thereby reducing photodamage. SHG microscopy images noncentrosymmetric biological structures such as collagen and myosin without fluorescent labels, offering direct structural contrast.
Kausalya Neelavara Makkithaya   +7 more
wiley   +1 more source

‘In silico labelling’: Exploring the biological landscape at the nanoscale using intelligent multimodal optical microscopy

open access: yesJournal of Microscopy, Volume 304, Issue 1, Page 41-50, October 2026.
Abstract Multimodal optical microscopy has recently converged with artificial intelligence (AI) to enable in silico labelling—the computational prediction of fluorescence‐like molecular contrast from label‐free measurements. Fluorescence plays a crucial role in linking microscopy and spectroscopy at molecular level, enabling image formation by means of
A. Diaspro   +9 more
wiley   +1 more source

Fully polarimetric radiometer system for airborne remote sensing [PDF]

open access: yes, 2003
As a result of the increasing interest in polarimetric microwave radiometer measurements, a fully polarimetric radiometer system was developed and thoroughly tested in this work.
Lahtinen, Janne
core   +1 more source

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