Results 31 to 40 of about 129,596 (316)

Excitation of Terahertz Spoof Surface Plasmons on a Roofed Metallic Grating by an Electron Beam

open access: yesMicromachines
In this paper, both fundamental SSP modes on a roofed metallic grating and its effective excitation of the bounded SSP mode by an injected electron beam on the structure are numerically examined and investigated in the THz regime.
Yongqiang Liu   +6 more
doaj   +1 more source

HERWIG 6: an event generator for Hadron emission reactions with interfering gluons (including supersymmetric processes) [PDF]

open access: yes, 2000
HERWIG is a general-purpose Monte Carlo event generator, which includes the simulation of hard lepton-lepton, lepton-hadron and hadron-hadron scattering and soft hadron-hadron collisions in one package. It uses the parton-shower approach for initial- and
Odagiri K   +23 more
core   +2 more sources

Monolithically integrated wide field-of-view metalens by angular dispersionless metasurface

open access: yesMaterials & Design
Meta-lenses, which are made by sub-wavelength metallic or dielectric elements, have attracted widespread attentions due to its unprecedented electromagnetic wave manipulation abilities and novel applications.
Yong-Qiang Liu   +6 more
doaj   +1 more source

A Super-Algebraically Convergent, Windowing-Based Approach to the Evaluation of Scattering from Periodic Rough Surfaces [PDF]

open access: yes, 2008
We introduce a new second-kind integral equation method to solve direct rough surface scattering problems in two dimensions. This approach is based, in part, upon the bounded obstacle scattering method that was originally presented in Bruno et al. [2004]
Monro, John Anderson
core   +1 more source

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

open access: yesSensors
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

open access: yesScientific 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   +5 more
doaj   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Low and high orders light scattering within the dispersible media. [PDF]

open access: yes, 2005
Sprays, aerosols as well as other industrially relevant turbid media can be characterized by light scattering techniques. However these techniques often fall into the intermediate scattering regime where the average number of times a photon is ...
Churmakov, D. Y.   +3 more
core  

Full correction of scattering effects by using the radiative transfer theory for improved quantitative analysis of absorbing species in suspensions [PDF]

open access: yes, 2013
Sample-to-sample photon path length variations that arise due to multiple scattering can be removed by decoupling absorption and scattering effects by using the radiative transfer theory, with a suitable set of measurements.
Thennadil, Suresh N.   +1 more
core   +1 more source

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

open access: yesIEEE 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   +4 more
doaj   +1 more source

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