Results 31 to 40 of about 198,005 (333)

Hyperspectral and Radar Airborne Imagery over Controlled Release of Oil at Sea

open access: yesSensors, 2017
Remote sensing techniques are commonly used by Oil and Gas companies to monitor hydrocarbon on the ocean surface. The interest lies not only in exploration but also in the monitoring of the maritime environment.
Sébastien Angelliaume   +5 more
doaj   +1 more source

Snapshot multi-wavelength interference microscope

open access: yesOptics Express, 2018
A snapshot multi-wavelength interference microscope is proposed for high-speed measurement of large vertical range discontinuous microstructures and surface roughness. A polarization CMOS camera with a linear micro-polarizer array and Bayer filter accomplishes snapshot multi-wavelength phase-shifting measurement.
Xiaobo Tian   +6 more
openaire   +2 more sources

Multi-Wavelength Based Optical Density Sensor for Autonomous Monitoring of Microalgae

open access: yesSensors, 2015
A multi-wavelength based optical density sensor unit was designed, developed, and evaluated to monitor microalgae growth in real time. The system consisted of five main components including: (1) laser diode modules as light sources; (2) photodiodes as ...
Fei Jia, Murat Kacira, Kimberly L. Ogden
doaj   +1 more source

Research Progress of Monolithic Integrated DFB Laser Arrays for Optical Communication

open access: yesCrystals, 2022
Photonic integrated circuits (PICs) play a leading role in modern information and communications technology. Among the core devices in PICs is the distributed feedback (DFB) multi-wavelength semiconductor laser array. Multi-wavelength semiconductor laser
Shen Niu   +12 more
doaj   +1 more source

The multi-wavelength polarization of Cygnus X-1 [PDF]

open access: yes, 2013
Polarization measurements of the microquasar Cygnus X-1 exist at gamma-ray, X-ray, UV, optical and radio frequencies. The gamma-ray emission has been shown to be highly linearly polarized.
Russell, David M., Shahbaz, Tariq
core   +1 more source

Characterising the Long-Term Variability of Blazars in Leptonic Models

open access: yesGalaxies, 2019
Most research on blazar variability focuses on individual flares to explain acceleration and radiation mechanisms and improve on current models. These short-time events (being minutes, hours, or days) might not be representative of the underlying ...
Hannes Thiersen   +2 more
doaj   +1 more source

Multi-Wavelength Photoacoustic Temperature Feedback Based Photothermal Therapy Method and System

open access: yesPharmaceutics, 2023
Photothermal therapy (PTT) is a new type of tumor treatment technology that is noninvasive, repeatable, and does not involve radiation. Owing to the lack of real-time and accurate noninvasive temperature measurement technology in current PTT surgical ...
Yiming Ma   +5 more
doaj   +1 more source

Multi-wavelength Time Domain Optical Mammography

open access: yesTechnology in Cancer Research & Treatment, 2005
A time-resolved optical mammograph operating at 7 wavelengths (637, 683, 785, 832, 905, 916, and 975 nm) in compressed breast geometry was developed. Its clinical application was started on patients bearing malignant and benign lesions. Late gated intensity images are used to obtain information on the spatial distribution of the absorption properties ...
TARONI, PAOLA   +5 more
openaire   +4 more sources

Modeling Multi-Wavelength Stellar Astrometry. II. Determining Absolute Inclinations, Gravity Darkening Coefficients, and Spot Parameters of Single Stars with SIM Lite [PDF]

open access: yes, 2010
We present a novel technique to determine the absolute inclination of single stars using multi-wavelength sub-milliarcsecond astrometry. The technique exploits the effect of gravity darkening, which causes a wavelength-dependent astrometric displacement ...
Aufdenberg   +26 more
core   +2 more sources

Feasibility Study of Multi-Wavelength Differential Absorption LIDAR for CO2 Monitoring

open access: yesAtmosphere, 2016
To obtain a better understanding of carbon cycle and accurate climate prediction models, highly accurate and temporal resolution observation of atmospheric CO2 is necessary. Differential absorption LIDAR (DIAL) remote sensing is a promising technology to
Chengzhi Xiang   +5 more
doaj   +1 more source

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