Results 91 to 100 of about 601,794 (307)

AgRISTARS. Supporting research: MARS x-band scatterometer [PDF]

open access: yes
The design, construction, and data collection procedures of the mobile agricultural radar sensor (MARS) x band scatterometer are described. This system is an inexpensive, highly mobile, truck mounted FM-CW radar operating at a center frequency of 10.2 ...
Brunfeldt, D. R.   +2 more
core   +1 more source

Health of Wild Atlantic Salmon (Salmo salar) Smolts Along Coastal Migratory Routes in Newfoundland, Canada With and Without Salmonid Aquaculture as Assessed Using Sentinel Cages

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
ABSTRACT Declines in wild Atlantic salmon populations in the North Atlantic with migratory routes adjacent to commercial salmonid aquaculture operations in coastal marine environments have raised concerns about the potential for direct or indirect effects this industry may have on local wild populations.
Mark Young   +14 more
wiley   +1 more source

MODELING OF BISTATIC RADAR CLUTTER

open access: yesPerner’s Contacts, 2012
The bistatic radar forms a basic part of multistatic radar systems for Air Traffic Control. The effort in this article is to provide the inside and make basis for future research of the bistatic radar clutter.
Marek Pola, Pavel Bezoušek
doaj  

Radar measurement of soil moisture content [PDF]

open access: yes
The effect of soil moisture on the radar backscattering coefficient was investigated by measuring the 4-8 GHz spectral response from two types of bare-soil fields: slightly rough and very rough, in terms of the wavelength.
Ulaby, F. T.
core   +1 more source

Dependence of microwave absorption properties on ferrite volume fraction in MnZn ferrite/rubber radar absorbing materials

open access: yes, 2011
We report the analysis of measurements of the complex magnetic permeability ($\mu_r$) and dielectric permittivity ($\epsilon_r$) spectra of a rubber radar absorbing material (RAM) with various MnZn ferrite volume fractions.
Dantas, Christine C.   +2 more
core   +1 more source

Distance of movement in three threatened butterfly species

open access: yesEcological Entomology, Volume 51, Issue 2, Page 250-260, April 2026.
Multi‐year mark–recapture analysis using net displacement and Cormack–Jolly–Seber models shows similar daily detectability (0.17–0.22) among species, supporting robust interspecific comparisons. Dispersal kernels differ: lognormal best for Euphydryas aurinia and Parnassius apollo, exponential for Phengaris arion; P.
Markus Franzén   +3 more
wiley   +1 more source

Radar return from a continuous vegetation canopy [PDF]

open access: yes
The radar backscatter coefficient, sigma deg, of alfalfa was investigated as a function of both radar parameters and the physical characteristics of the alfalfa canopy.
Bush, T. F., Ulaby, F. T.
core   +1 more source

Modeling the Transport and Dispersion of Volcanic Co‐PDC Ash Clouds Using NAME: An Evaluation of Source Geometry and Mass Eruption Rate

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Pyroclastic density currents (PDCs) are gravity currents that frequently form during explosive volcanic eruptions. These ground‐hugging density currents consist of high‐temperature mixtures of pyroclasts (e.g., ash, pumice), lithics, and gas.
M. Hagenbourger   +3 more
wiley   +1 more source

The Source Brightness Distribution of Terrestrial Gamma‐Ray Flashes From the ALOFT Flight Campaign

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Terrestrial Gamma‐ray Flashes (TGFs) are naturally occurring phenomena that consist of bursts of gamma radiation associated with thunderclouds. Measurements of TGFs have been predominantly based on satellite instruments due to the significantly larger observation area compared to ground measurements. Due to atmospheric attenuation of the gamma
A. N. Fuglestad   +15 more
wiley   +1 more source

Impact of tissue staining and scanner variation on the performance of pathology foundation models: a study of sarcomas and their mimics

open access: yesThe Journal of Pathology: Clinical Research, Volume 12, Issue 2, March 2026.
Abstract Histopathological analysis is considered the gold standard for the diagnosis and prognostication of cancer. Recent advances in AI, driven by large‐scale digitisation and pan‐cancer foundation models, are opening new opportunities for clinical integration.
Binghao Chai   +74 more
wiley   +1 more source

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