Results 21 to 30 of about 1,394,895 (334)

Differentiation of Livestock Internal Organs Using Visible and Short-Wave Infrared Hyperspectral Imaging Sensors

open access: yesSensors, 2022
Automatic identification and sorting of livestock organs in the meat processing industry could reduce costs and improve efficiency. Two hyperspectral sensors encompassing the visible (400–900 nm) and short-wave infrared (900–1700 nm) spectra were used to
Cassius E. O. Coombs   +6 more
doaj   +1 more source

Computer vision techniques for modelling the roasting process of coffee (Coffea arabica L.) var. Castillo

open access: yesCzech Journal of Food Sciences, 2020
Artificial vision has wide-ranging applications in the food sector; it is easy to use, relatively low cost and allows to conduct rapid non-destructive analyses. The aim of this study was to use artificial vision techniques to control and model the coffee
Eugenio Ivorra   +2 more
doaj   +1 more source

Ultralow loss visible light metamaterials assembled by metaclusters

open access: yesNanophotonics, 2022
Optical metamaterials give birth to the control and regulation of light. However, because of strong energy dissipation and fabrication difficulty in meta-atoms, low-loss isotropic three dimensional negative index metamaterials (NIMs) in the visible ...
Zhao Jing   +10 more
doaj   +1 more source

Visible absorption spectrum of liquid ethylene [PDF]

open access: yesProceedings of the National Academy of Sciences, 1981
The visible absorption spectrum of liquid ethylene at ≈ 108 K from 5500 Å to 7200 Å was measured by using a pulsed tunable dye laser, immersed-transducer, gated-detection opto-acoustic spectroscopy technique. The absorption features show the strongest band with an absorption coefficient of ≈2 × 10 -2 cm -
E T, Nelson, C K, Patel
openaire   +2 more sources

State of the Art and Elucidation of Postharvest LED Lighting on the Metabolism of Brassica Sprouts

open access: yesHorticulturae, 2022
Brassicaceae sprouts are important sources of vitamins, phenolic compounds, minerals, glucosinolates, and isothiocyanates. LEDs illumination have been demonstrated to increase yield and the phytochemical content of young plants.
Lorena Martínez-Zamora   +3 more
doaj   +1 more source

Extension of the Visible Spectrum [PDF]

open access: yesNature, 1896
WHILE engaged on work in connection with the discharge of electrification by ultra-violet light, we have come across a fact which it may be convenient to state by itself, viz. that the spectrum of an arc can be made visible over the greater part of its immense range of action on electrified metals, by receiving it upon a screen of the double fluoride ...
OLIVER J. LODGE, BENJAMIN DAVIES
openaire   +4 more sources

In a Different Light [PDF]

open access: yes, 2003
This module develops the understanding that visible light is composed of a spectrum of colors of light from red to violet, extends the concept of a spectrum to include non-visible light through discovery, and develops tools and strategies for student ...

core   +2 more sources

Advances in Droplet-Based Microfluidic High-Throughput Screening of Engineered Strains and Enzymes Based on Ultraviolet, Visible, and Fluorescent Spectroscopy

open access: yesFermentation, 2023
Genetic engineering and directed evolution are effective methods for addressing the low yield and poor industrialization level of microbial target products.
Shunyang Hu   +5 more
doaj   +1 more source

Fourier transform infrared spectrometer for a single aerosol particle [PDF]

open access: yes, 1987
A spectrometer is reported here for obtaining the infrared spectrum of a single aqueous aerosol particle by a Fourier transform technique. The particle is held in an electrodynamic balance and irradiated simultaneously by the infrared output from a ...
Arnold, Stephen   +3 more
core   +1 more source

Deep Perceptual Mapping for Thermal to Visible Face Recognition [PDF]

open access: yes, 2015
Cross modal face matching between the thermal and visible spectrum is a much de- sired capability for night-time surveillance and security applications. Due to a very large modality gap, thermal-to-visible face recognition is one of the most challenging ...
Sarfraz, M. Saquib, Stiefelhagen, Rainer
core   +3 more sources

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