Results 21 to 30 of about 1,788,447 (243)

Rotor–Body Echo Separation Using a Cyclic-Power-Guided Soft Mask from UAV Radar Signals

Sensors
Rotor-induced micro-Doppler signatures are essential for radar-based characterization of rotary-wing UAVs, but practical echoes are often dominated by a strong quasi-static body return concentrated near zero Doppler.
Ji’er Wang, Jing Sheng, He Tian, Bo Li
doaj   +1 more source

Terahertz bistatic three-dimensional computational imaging of hidden objects through random media

Scientific Reports
Random media pose limitations on the imaging capability of photoelectric detection devices. Currently, imaging techniques employed through random media primarily operate within the laser wavelength range, leaving the imaging potential of terahertz waves ...
Quanchun Yu, He Cai, Xianli Zhu, Zihao Liu, Hongcheng Yin, Liangsheng Li   +5 more
doaj   +1 more source

Loss of proton‐sensing TDAG8 increases tumor progression in mouse models of colon cancer

Molecular Oncology, EarlyView.
Loss of the pH‐sensing receptor TDAG8 accelerates colorectal cancer progression in mice. Animals lacking TDAG8 expression had increased tumor growth, DNA damage, and recruitment of tumor‐associated immune cells, including macrophages, neutrophils, and monocytes.
Ermanno Malagola, Yasmine Illi, Anna Bircher, Marijn Wilmink, Rachele F. Malagutti, Solenn Ottié, Cordelia Schuler, Pedro A. Ruiz, Cheryl de Vallière, Klaus Seuwen, Gerhard Rogler, Martin Hausmann   +11 more
wiley   +1 more source

Theoretical Study on the Time-Coherence Characteristics of EM Scattering From Linear Sea Surface Based on an Analytical Model

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The time autocoherence function (TACF) and the Doppler spectrum (DS) are key statistical characteristics reflecting the time-coherence properties of sea clutter.
Qiang Li, Chong Wang, Jinchuan Hao, Hongcheng Yin, Yong Chen   +4 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Absorption and scattering in perfect thermal radiation absorber-emitter metasurfaces [PDF]

, 2021
Detailed spectral analysis of radiation absorption and scattering behaviors of metasurfaces was carried out via finite-difference time-domain (FDTD) photonic simulations.
Yoshiaki, Nishijima, Naoki, To, Sauliur, Juodkazis, Armandas, Balcytis   +3 more
core   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

Influence of Absorber Contents and Temperatures on the Dielectric Properties and Microwave Absorbing Performances of C@TiC/SiO₂ Composites

Nanomaterials
TiC provides a promising potential for high-temperature microwave absorbers due to its unique combination of thermal stability, high electrical conductivity, and robust structural integrity.
Yan Wang, Xin Sun, Zhihe Xiao, Jian Gu, Qinyi Dong, Shuhang Yi, Junyang Jin   +6 more
doaj   +1 more source

Time-independent hybrid enrichment for finite element solution of transient conduction–radiation in diffusive grey media [PDF]

, 2013
We investigate the effectiveness of the partition-of-unity finite element method for transient conduction–radiation problems in diffusive grey media. The governing equations consist of a semi-linear transient heat equation for the temperature ?eld and a ...
Mohamed, M.S., Seaid, Mohammed, Trevelyan, Jon, Seaid, M., Mohamed, M Shadi; id_orcid, Laghrouche, Omar; id_orcid, Trevelyan, J., Laghrouche, O.   +7 more
core   +1 more source

Goniopolarimetric Properties of Typical Satellite Material Surfaces: Intercomparison with Semi-Empirical pBRDF Modeled Results

Photonics
Light reflected from satellite surfaces is polarized light, which plays a crucial role in space target identification and remote sensing. To deepen our understanding of the polarized reflectance property for satellite material surface, we present the ...
Min Yang, Hongxia Mao, Jun Wu, Chong Zheng, Li Wang   +4 more
doaj   +1 more source