Results 61 to 70 of about 32,736 (313)

Stability and height dependant variations of the structure function parameters in the lower atmospheric boundary layer investigated from measurements of the long-term experiment VERTURM (vertical turbulence measurements

open access: yes, 2022
Paper 817809Operation and design of electro-optical systems are affected by atmospheric optical turbulence quantified by the refractive index parameter Cn².
Weiss-Wrana, Karin   +4 more
core   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

open access: yesFEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno   +3 more
wiley   +1 more source

Electro-optical propagation measurements during the MINOTAUROS experiment in the Cretan Sea

open access: yes, 2022
Paper 1042506, 17 S.We report on propagation measurements performed during the MINOTAUROS (Maritime INvestigations On Targets & Atmosphere Under Reduction of Optical Signatures) experiment on Crete, Greece, in late summer of 2016.
Stein, Karin   +3 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Synchronized acoustic and atmospheric measurement system for characterization of atmospheric sound propagation

open access: yesNoise Mapping, 2022
The aim of the paper is to describe a portable, modular, and scaleable system for measuring concurrent acoustic transmission loss and atmospheric characteristics.
Ryan Teresa   +5 more
doaj   +1 more source

Multiple Wavelength Free-Space Laser Communications

open access: yes, 2003
Free-space optical communications systems in the atmosphere, based on intensity modulation and direct detection, are heavily affected by fading caused by turbulence cells of varying scale and motion.
Perlot, Nicolas   +9 more
core   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo   +3 more
wiley   +1 more source

A Sliced Parabolic Equation Method to Characterize Maritime Radio Propagation

open access: yesSensors, 2023
For maritime broadband communications, atmospheric ducts can enable beyond line-of-sight communications or cause severe interference. Due to the strong spatial–temporal variability of atmospheric conditions in near-shore areas, atmospheric ducts have ...
Yuzhen Wang   +3 more
doaj   +1 more source

Millimeterwave propagation within the marine boundary layer in European and tropical regions

open access: yes, 2022
Paper 63640SDuring recent years measurement campaigns have been conducted to result in a data base representative for propagation in the marine boundary layer at radar bands ranging from X- to W-band, which is valid for ocean areas typical for Europe ...
Pagels, A., Fuchs, H.-H., Essen, H.
core   +1 more source

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

open access: yesAdvanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl   +4 more
wiley   +1 more source

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