Results 81 to 90 of about 8,136,705 (229)

White light reduces flight height of birds in low‐density migration corridor

The Journal of Wildlife Management, Volume 90, Issue 8, November 2026.
We conducted an experiment to better understand the effects of artificial light at night treatments of varying spectral power distributions on in‐flight migratory bird behavior as measured by a portable radar. Broad‐spectrum white light emissions reduced avian flight height as compared to dark periods and more than other light treatments.
Miguel F. Jimenez, Carrie Ann Adams, Carolyn S. Burt, Brian D. Gerber, Jeremy White, Riana Zinn, Kyle G. Horton   +6 more
wiley   +1 more source

Numerical study on signatures of atmospheric convective cells in radar images of the ocean

, 1999
Current and wind variations at the ocean surface can give rise to a modulation of the sea surface roughness and thus become visible in radar images. The discrimination between radar signatures of oceanic and atmospheric phenomena can be quite difficult ...
Susanne Ufermann, Roland Romeiser, Romeiser, Roland, Ufermann, Susanne, Ufermann, S., Romeiser, R.   +5 more
core   +2 more sources

One‐Step Fabrication of Multifunctional Superhydrophobic Surfaces With Photothermal and Electromagnetic Shielding for Anti‐Icing/De‐Icing

Rare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Ice accumulation poses significant safety hazards and economic burdens across industrial sectors. Photothermal superhydrophobic coatings provide a practical yet promising solution. However, their fabrication typically requires complex multi step processing, limiting scalable implementation. Herein, we report a one step selective laser melting (
Zeling Yang, Xiaotong Guan, Shile Feng, Ben Bin Xu, Xuechao Li, Guiwei Li, Luquan Ren, Wenzheng Wu   +7 more
wiley   +1 more source

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

, 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, Andreas Reigber, Ferro-Famil, Laurent, Yue Huang, Reigber, Andreas, Laurent Ferro-Famil   +5 more
core   +1 more source

Covalent Organic Frameworks in Smart Food Packaging: Advances, Challenges, and Future Prospects

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 6, November 2026.
ABSTRACT Food preservation challenges have positioned packaging as a rapidly evolving, innovation‐driven field, with smart packaging offering transformative solutions. Among advanced materials, covalent organic frameworks (COFs) have attracted growing attention due to their permanent porosity, structural tunability, high surface area, and chemical ...
Sara Esteghlal, Hossein Daneshgar, Navid Rabiee, Mohammadreza Khalesi   +3 more
wiley   +1 more source

An X-Band Low Noise Amplifier Design for Marine Navigation Radars

International Journal of Communications, Network and System Sciences, 2014
In this paper, the design of a 9.1 GHz Low Noise Amplifier (LNA) of a RADAR receiver that is used in the Navy is presented. For the design of the LNA, we used GaAs Field-Effect Transistors (FETs) from Agilent ADS component library. In order to keep the cost of the circuit in low prices and the performance high, we design a two-stage LNA.
Christina Lessi, Evangelia Karagianni
openaire   +2 more sources

Enhancement of the Nighttime Ocean Cool Skin Effect by Natural Surfactants

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The ocean interface brightness temperature is sensitive to the biologic activity reflected by the chlorophyll‐a concentration (Chla) in the upper layers of the oceans. This is shown using sea surface skin temperatures Tskin retrieved from spectra recorded by the Infrared Atmospheric Sounder Interferometer and collocated measurements of bulk ...
Hugo Bellenger, Virginie Capelle, Jean‐Michel Hartmann   +2 more
wiley   +1 more source

E-SAR P-band System Performance [PDF]

, 2006
DLR’s experimental airborne SAR E-SAR is well-known in Europe and beyond. It is a versatile system operating in four major radar frequency bands, one of them being the P-band starting at 300MHz.
Gabler, Bernd, Horn, Ralf, Scheiber, Rolf, Limbach, Markus   +3 more
core  

Estimation and correction of scintillation effects on spaceborne P-band SAR images [PDF]

, 2012
A correction method for distortions induced by ionospheric scintillation effects on P-band quad-pol synthetic aperture radar (SAR) data acquired in polar and high latitude regions is presented.
Konstantinos P. Papathanassiou, Papathanassiou, Kostas, Jun Su Kim, Shaun Quegan, Quegan, Shaun, Rogers, Neil, Kim, Jun Su, Papathanassiou, Konstantinos, Neil Rogers   +8 more
core   +1 more source

A Hybrid Superdroplet–Bin Microphysics Approach Reveals How Large Salt Particles Trigger Rain in Non‐Precipitating Warm Convective Clouds

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract This study develops a Superdroplet‐Bin hybrid microphysics scheme within the Weather Research and Forecasting (WRF) model to investigate hygroscopic seeding of warm convective clouds. The Super‐droplet method describes 3D transport, deliquescence, condensation, and collision‐coalescence growth of seeding agents or solution droplets, while the ...
Shaofeng Hua, Baojun Chen, Jing Yang, Shujing Shen, Weiguo Liu, Yueqin Shi, Yubao Liu, Ping Tian, Xijing Liu, Yunfei Che   +9 more
wiley   +1 more source