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Nature inspired design methodology for a wide field of view achromatic metalens [PDF]

open access: yesNanophotonics
Metalenses have become ubiquitous in academic research and have begun to make their transition to industry. However, chromatic aberration still greatly limits the applications of metalenses.
Engelberg Jacob   +2 more
doaj   +2 more sources

Compact Optical Visual Magnification System with a Wide Field of View [PDF]

open access: yesSensors
A new concept for designing a visual magnification system is introduced. In this concept, apart from the conventional objective and the eyepiece group lenses in the system, an additional Power-Corrector (PC) group of lenses is introduced in the optical ...
Uri Milman, Jacob Kaufmann, Yoel Arieli
doaj   +2 more sources

Mitochondria-Targeted Human Catalase in the Mouse Longevity MCAT Model Mitigates Head-Tilt Bedrest-Induced Neuro-Inflammation in the Hippocampus

open access: yesLife, 2022
Microgravity (modeled by head-tilt bedrest and hind-limb unloading), experienced during prolonged spaceflight, results in neurological consequences, central nervous system (CNS) dysfunction, and potentially impairment during the performance of critical ...
Linda Rubinstein   +10 more
doaj   +1 more source

Clinical impact of nanophotonic blue-light filtering spectacles based on fullerene C60 and polymethyl methacrylate (PMMA) [PDF]

open access: yesVojnosanitetski Pregled, 2021
Background/Aim. Blue light might be harmful to the retina. The nano-material based on fullerene C60 and polymethyl methacrylate (PMMA) transforms the light into harmonized light and absorbs violet, blue, and ultraviolet (UV) wavelength.
Jankov Mirko R.   +2 more
doaj   +1 more source

Observations of sea ice melt from Operation IceBridge imagery [PDF]

open access: yesThe Cryosphere, 2020
The summer albedo of Arctic sea ice is heavily dependent on the fraction and color of melt ponds that form on the ice surface. This work presents a new dataset of sea ice surface fractions along Operation IceBridge (OIB) flight tracks derived from the ...
N. C. Wright   +5 more
doaj   +1 more source

A Deep Learning Approach for Meter-Scale Air Quality Estimation in Urban Environments Using Very High-Spatial-Resolution Satellite Imagery

open access: yesAtmosphere, 2022
High-spatial-resolution air quality (AQ) mapping is important for identifying pollution sources to facilitate local action. Some of the most populated cities in the world are not equipped with the infrastructure required to monitor AQ levels on the ...
Meytar Sorek-Hamer   +10 more
doaj   +1 more source

DiskMINT: A Tool to Estimate Disk Masses with CO Isotopologues

open access: yesThe Astrophysical Journal, 2023
CO is one of the most abundant molecules in protoplanetary disks, and optically thin emission from its isotopologues has been detected in many of them.
Dingshan Deng   +3 more
doaj   +1 more source

A Method to Evaluate the Stimulation of a Real World Field of View by Means of a Spectroradiometric Analysis [PDF]

open access: yes, 2015
Stimulation elicited by a real world field of view is related to the color, the intensity and the direction of the information reaching the eye: different spectral power distributions of light trigger different responses. An evaluation of the stimulation
Barbalace, Monica   +7 more
core   +3 more sources

Review: Strategies for using satellite-based products in modeling PM2.5 and short-term pollution episodes

open access: yesEnvironment International, 2020
Short-term air pollution episodes motivate improved understanding of the association between air pollution and acute morbidity and mortality episodes, and triggers required mitigation plans. A variety of methods have been employed to estimate exposure to
Meytar Sorek-Hamer   +2 more
doaj   +1 more source

Robust design and analysis for opto-mechanical two array laser warning system

open access: yesDefence Technology, 2023
In the past three decades, laser warning systems (LWS) have emerged in great importance, as the development of laser-guided weapons, such as airborne Hellfire missiles, has increased, posing an imminent threat to vital areas and VIPs.
Mazhar Tayel   +5 more
doaj   +1 more source

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