Results 51 to 60 of about 1,665 (179)

Design, Synthesis, and Biological Evaluation of Chiral Urea and Thiourea Derivatives as Multitarget‐Directed Anti‐Alzheimer Agents

Drug Development Research, Volume 87, Issue 5, August 2026.
ABSTRACT A series of novel chiral urea and thiourea compounds were designed as multitarget‐directed ligands for Alzheimer's disease and evaluated against hAChE, hBChE, and hMAO‐B, with exploratory assessment of HSD10. These chiral compounds were synthesized and fully characterized, and their enantiopurity was confirmed via HPLC.
Sule Erol Gunal, Senel Teke Tuncel, İlke Demir, İpek Baysal, Gökçen Telli, Safiye Sag Erdem, Gulberk Ucar, Michaela Hanzlova, Kamil Musilek, İlknur Dogan, Nesrin Gokhan Kelekci   +10 more
wiley   +1 more source

Robust Regional Contrast but Penetration‐Sensitive Snow Thickness Over Sea Ice From Multi‐Winter Antarctic CRYO2ICE Observations

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Snow on Antarctic sea ice modulates albedo, thermodynamic growth, and snow–ice formation, yet remains a leading uncertainty in altimetry‐derived sea‐ice thickness. Here we use the post‐2022 CRYO2ICE configuration to derive along‐track winter snow thickness from ICESat‐2 laser and CryoSat‐2 Ku‐band radar freeboards over the Weddell and Ross ...
Xinlong Liu, Alexander D. Fraser, Rachel L. Tilling, Petra Heil, Stuart P. Corney   +4 more
wiley   +1 more source

Observing Seasonal Variabilities of a Permafrost Landscape With PolSAR, InSAR and Pol-InSAR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Synthetic aperture radar (SAR) remote sensing is an established approach for observing Earth processes. The combination of different types of SAR acquisitions in polarimetric, interferometric, and polarimetric-interferometric frameworks is well studied ...
Paloma Saporta, Alberto Alonso-Gonzalez, Jennika Hammar, Inge Grunberg, Julia Boike, Irena Hajnsek   +5 more
doaj   +1 more source

What SAR Labels Hide About a Changing Arctic

Earth's Future, Volume 14, Issue 8, August 2026.
Abstract Synthetic aperture radar (SAR) has been the backbone of Arctic sea ice monitoring since the 1990s, yet nearly every operational product that assigns an ice class or geophysical state (melt onset dates, freeze‐up timing, ice‐type classifications) is derived by compressing continuous radar backscatter into discrete categorical labels.
M. Mahmud
wiley   +1 more source

Autonomous Coastal Land Cover Assessment Using Polarimetric Decomposition of SAR Data [PDF]

ITB Journal of Engineering Science, 2011
The paper reports an experiment on classification using fully polarimetric SAR data. Many reports have been presented mentioning test sites in temperate regions utilizing polarimetric SAR data from airborne and/or spaceborne SAR sensors.
Bambang H. Trisasongko
doaj  

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

InfoMat, Volume 8, Issue 7, July 2026.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

DESPECKLING POLSAR IMAGES BASED ON RELATIVE TOTAL VARIATION MODEL [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Relatively total variation (RTV) algorithm, which can effectively decompose structure information and texture in image, is employed in extracting main structures of the image.
C. Jiang, C. Jiang, X. F. He, L. J. Yang, J. Jiang, D. Y. Wang, Y. Yuan   +6 more
doaj   +1 more source

Despeckling Multitemporal Polarimetric SAR Data Based on Tensor Decomposition

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Despeckling is an essential task in polarimetric synthetic aperture radar (PolSAR) image processing. Most of the existing filters developed for multitemporal synthetic aperture radar (SAR) images make use of either real or complex information.
Jiayin Luo, Lu Zhang, Jie Dong, Juan M. Lopez-Sanchez, Yian Wang, Hao Feng, Mingsheng Liao   +6 more
doaj   +1 more source

EMISAR: a dual-frequency, polarimetric airborne SAR [PDF]

IEEE International Geoscience and Remote Sensing Symposium, 2003
EMISAR is a fully polarimetric, dual frequency (L- and C-band) SAR system designed for remote sensing applications. The data are usually processed to 2/spl times/2 m resolution. The system has the capability of C-band cross-track single-pass interferometry and fully polarimetric repeat-pass interferometry.
Dall, Jørgen; id_orcid 0000-0002-3873-1074, Christensen, Erik Lintz   +1 more
openaire   +3 more sources

Observation and Coordination Needs for Current, Near‐Future, and Next Generation Earth‐Observing SAR Systems

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This paper summarizes an evaluation by experts of how coordination of Earth‐observing Synthetic Aperture Radar (SAR) missions among the world's space agencies could advance toward game‐changing scientific discoveries and fully realizing SAR's practical capability to address many issues facing society.
Cathleen E. Jones, Ake Rosenqvist, Björn Rommen, Magdalena Fitrzyk, Eric Rignot, Bernd Scheuchl, Yujie Zheng, Andrew Hooper, Mark Simons, Tomokazu Kobayashi, Paul Siqueira, Maurizio Santoro, Takeo Tadono, Laura Hess, Heather McNairn, Laura Frulla, Malin Johansson, Wolfgang Dierking, Line Rouyet, Annett Bartsch, Paco Lopez Dekker, Johnny A. Johannessen   +21 more
wiley   +1 more source