Results 31 to 40 of about 1,394,895 (334)

Optical Filters for TV-Induced Photosensitive Epilepsy

open access: yesPediatric Neurology Briefs, 2001
Two different types of optical filters were tested in 20 photosensitive epileptic patients for ability to inhibit photoparoxysmal response (PPR) and seizures, in a study at Gifu Prefectural Gifu Hospital, Japan.
J Gordon Millichap
doaj   +1 more source

Plant Disease Diagnosis in the Visible Spectrum

open access: yesApplied Sciences, 2022
A simple and robust methodology for plant disease diagnosis using images in the visible spectrum of plants, even in uncontrolled environments, is presented for possible use in mobile applications.
Lili Guadarrama   +2 more
doaj   +1 more source

Graphene/4H-SiC Schottky photodetector operating in the visible spectrum range [PDF]

open access: yesEPJ Web of Conferences, 2023
In this work, we present the first experimental results on a Schottky photodetector based on Silicon Carbide (SiC) and Graphene (Gr) designed to operate in the visible spectral range.
Mallemace Elisa D.   +6 more
doaj   +1 more source

Optical Birefringence Fiber Temperature Sensors in the Visible Spectrum of Light [PDF]

open access: yes, 2017
This article describes experimental tests to determine PM fibers Panda style responses to a thermal source with different initial temperature. The aim of this study was to determine the sensitivity of a polarization maintaining fiber to the radiating
Dvořák, Filip   +3 more
core   +1 more source

The Use of UAV Mounted Sensors for Precise Detection of Bark Beetle Infestation

open access: yesRemote Sensing, 2019
The bark beetle (Ips typographus) disturbance represents serious environmental and economic issue and presents a major challenge for forest management. A timely detection of bark beetle infestation is therefore necessary to reduce losses.
Tomáš Klouček   +5 more
doaj   +1 more source

Analysis of Photodiode Monitoring in Laser Cutting

open access: yesApplied Sciences, 2020
The paper presents the results of an analysis based on the photodiode monitoring signals obtained during the laser cutting of aluminum and stainless steel plates.
Sonia M. Garcia   +3 more
doaj   +1 more source

BeppoSAX observations of the X-ray binary pulsar 4U1626-67 [PDF]

open access: yes, 1997
We report on observations of the low-mass X-ray binary 4U1626-67 performed during the BeppoSAX Science Verification Phase. We present the broad-band 0.1-100 keV pulse averaged spectrum, that is well fit by a two-component function: a 0.27 +/- 0.02 keV ...
A. Santangelo   +30 more
core   +2 more sources

Characterization of Red, Pink, Orange, and Purple Gem-Quality Spinel from Four Important Areas

open access: yesCrystals, 2023
Spinel is a precious stone with a long history. In ancient societies spinel was considered to be an imitation of ruby. With the depletion of ruby mineral resources, gem—grade spinel has attracted more and more attention from consumers. In the last decade,
Qian Xu, Bo Xu, Yujie Gao, Siying Li
doaj   +1 more source

Electronic excited state of protonated aromatic molecules: protonated Fluorene [PDF]

open access: yes, 2011
The photo-fragmentation spectrum of protonated fluorene has been recorded in the visible spectral region, largely red shifted as compared to the first excited state absorption of neutral fluorene. The spectrum shows two different vibrational progressions,
Ahlrichs   +42 more
core   +5 more sources

Stable Monolayer alpha-Phase of CdTe: Strain-Dependent Properties [PDF]

open access: yes, 2017
CdTe is a well known and widely used binary compound for optoelectronic applications. In this study, we propose the thinnest, free standing monolayer of CdTe which holds the tetragonal-PbO (alpha-PbO) symmetry. The structural, electronic, vibrational and
Sahin, Hasan   +2 more
core   +2 more sources

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