Results 111 to 120 of about 7,805 (237)

Excellent Microwave Absorption of Polyurethane Nanocomposites Engineered With Graphene Nanoplatelets and Magnetite

Journal of Polymer Science, Volume 64, Issue 12, Page 2501-2517, 15 June 2026.
Reflection loss behavior and microwave absorption mechanism of graphene nanoplatelet and magnetite reinforced polyurethane nanocomposites, highlighting synergistic dielectric and magnetic losses. ABSTRACT The escalating growth in telecommunication technology has led to a surge in electromagnetic pollution due to the increase in electronic devices. This
Michal Urbánek, Vanamoorthy Mariappan, Milan Masař, Jakub Ševčík, Michal Machovský, Jarmila Vilčáková, Ivo Kuřitka, Raghvendra Singh Yadav   +7 more
wiley   +1 more source

Field-aligned currents and ionospheric parameters deduced from EISCAT radar measurements in the post-midnight sector [PDF]

, 2002
International audienceAttempting to derive the field-aligned current (FAC) density using the EISCAT radar and to understand the role of the ionosphere on closing FACs, we conducted special radar experiments with the EISCAT radar on 9 October 1999.
Nagatsuma, T., Gjerloev, J. W., S. Nozawa, T. Nagatsuma, M. Sugino, S. C. Buchert, Nozawa, S., Fujii, R., Buchert, S. C., Kosch, M. J., M. J. Kosch, Sugino, M., R. Fujii, J. W. Gjerloev   +13 more
core   +1 more source

Coordinated optical and radar observations of ionospheric pumping for a frequency pass through the second electron gyroharmonic at HAARP [PDF]

, 2007
On 4 February 2005, the High-frequency Active Auroral Research Program (HAARP) facility was operated in O and X mode while pointing into the magnetic zenith to produce artificial optical emissions in the ionospheric F layer. The pump frequency was set to
Senior, Andrew, Pedersen, T., Kosch, Mike J., Bristow, B., Mishin, E., Watkins, B., Hughes, J., Oyama, S.   +7 more
core  

Correlation between cosmic noise absorption and VHF coherent echo intensity [PDF]

, 2005
International audienceWe present examples and statistical analysis of the events with statistically significant correlation between the cosmic noise absorption (CNA) and the signal-to-noise ratio (SNR) of the VHF coherent echo intensity in the area ...
Makarevitch, R.A., Makarevitch, R. A., F. Honary, Honary, F., R. A. Makarevitch   +4 more
core   +1 more source

Characterizing Tidal Marsh Inundation with Synthetic Aperture Radar, Radiometric Modeling, and In Situ Water Level Observations

Remote Sensing
Tidal marshes play a globally critical role in carbon and hydrologic cycles by sequestering carbon dioxide from the atmosphere and exporting dissolved organic carbon to connected estuaries.
Brian T. Lamb, Kyle C. McDonald, Maria A. Tzortziou, Derek S. Tesser   +3 more
doaj   +1 more source

Radar backscatter and forest biomass [PDF]

Nature Climate Change, 2012
S. Englhart, V. Keuck, F. Siegert
openaire   +1 more source

Estimating Stem Water Content From Tower-Based L-Band Tomographic Radar Using a Single-Scattering Model of a Uniform Layer: A First in Situ Experiment

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spaceborne synthetic aperture radar missions have the potential to estimate forest vegetation water content (VWC), but understanding the underlying scattering processes and their link to VWC is still limited.
Theresa Leistner, Albert R. Monteith, Jose Gutierrez Lopez, Lars M. H. Ulander   +3 more
doaj   +1 more source

Temporal, spatial, spectral and polarisation characteristics of the SAR backscatter from regenerating tropical forests

, 2001
The establishment of an accurate global carbon budget and the consequent ability to understand and predict future environmental change is dependent on knowing the strength of terrestrial sinks and sources of carbon.
Kuplich, Tatiana Mora, Kuplich, T.M.
core  

Multi-temporal high-resolution polarimetric L-band SAR observation of a wine-producing landscape

, 2006
In continuation of the BACCHUS project, aimed at establishing a reference high quality geographic information system for vineyards, an airborne SAR survey has been carried out in fall 2005 in the Frascati area, near Rome (Italy) to demonstrate the ...
Bianchi, Remo, Solimini, D., R. Horn, Del Frate, Fabio, Horn, Ralf, R. Bianchi, Minchella, Andrea, Schiavon, G., F. Del Frate, L. Fusco, A. Minchella, Burini, Alessandro, A. Burini, G. Schiavon, Fusco, Luigi, D. Solimini   +15 more
core   +1 more source

Soil moisture estimation underneath crop cover using high incidence angle C-band Sentinel-1 SAR data

Kuwait Journal of Science
SAR's return signal sensitivity to dielectric constant and penetration through vegetation makes it ideal for large-scale soil moisture studies. High incidence angle SAR data is especially useful for understanding crop characteristics.
Hari Shanker Srivastava, Thota Sivasankar, Madhuri Dilip Gavali, Parul Patel   +3 more
doaj   +1 more source