Results 131 to 140 of about 2,708,251 (409)
Portable remote laser sensor for methane leak detection [PDF]
, 1984 A portable laser system for remote detection of methane gas leaks and concentrations is disclosed. The system transmitter includes first and second lasers, tuned respectively to a wavelength coincident with a strong absorption line of methane and a ...
Grant, W. B., Hinkley, E. D., Jr.
core +1 more source
Optimum wavelength for long-wavelength LED systems
Electronics Letters, 1983 The bandwidth limitations due to material and modal dispersion are calculated for long-wavelength LED systems using measured attenuation and group delay characteristics for fibres of two different types. The data presented allow the establishment of selection criteria for LEDs used in 140 Mbit/s systems.
openaire +2 more sources
Simulation of Inhomogeneous Refractive Index Fields Induced by Hot Tailored Forming Components
Advanced Engineering Materials, EarlyView.This article presents a simulation model for simulating inhomogeneous refractive index fields (IRIF) in hot‐forged components, accounting for thermal influences and complex geometries. Through this simulation, a priori knowledge about the propagation of the IRIF can be obtained, allowing for the positioning of the component or an optical measurement ...
Pascal Kern +3 more
wiley +1 more source
Brain Photobiomodulation—Preliminary Results from Regional Cerebral Oximetry and Thermal Imaging
Medicines, 2019 A new piece of equipment for LED (light emitting diode) brain photobiomodulation is introduced. Preliminary results from regional cerebral oxygen saturation and from thermography are shown before, during and after stimulation.
Gerhard Litscher
doaj +1 more source
Advanced Engineering Materials, EarlyView.Incorporating nanosized silver into titanium for antimicrobial materials exploits the metastable miscibility gap between silver and titanium. Silver nanoparticles are synthesized via pulsed laser ablation in liquid. Silver addition refines the microstructure, increases hardness by 30%, and reduces Staphylococcus capitis microbial adhesion by 70%, with ...
Hamed Shokri +4 more
wiley +1 more source
A conceptual approach to material detection based on damping vibration-force signals via robot
Frontiers in NeuroroboticsIntroductionObject perception, particularly material detection, is predominantly performed through texture recognition, which presents significant limitations. These methods are insufficient to distinguish between different materials with similar surface
Ahmad Saleh Asheghabadi +5 more
doaj +1 more source
Pupillary behaviour in relation to wavelength and age
Frontiers in Human Neuroscience, 2014 Pupil light reflex can be used as a non-invasive ocular predictor of cephalic autonomic nervous system integrity. Spectral sensitivity of the pupil´s response to light has, for some time, been an interesting issue.
Luis-Lucio Lobato Rincón +5 more
doaj +1 more source
Single Image Dehazing Algorithm Analysis with Hyperspectral Images in the Visible Range
Sensors, 2020 In foggy or hazy conditions, images are degraded due to the scattering and attenuation of atmospheric particles, reducing the contrast and visibility and changing the color.
Miguel Ángel Martínez-Domingo +5 more
doaj +1 more source
A New Routing Protocol for All Optical Network [PDF]
Dhaka University Journal of Science, Bangladesh, Vol. 53, No. 2,
July 2005, pp. 1-10, 2014 In this research paper, an efficient routing protocol for all optical network (AOL) is proposed. The technique uses wavelength division multiplexing (WDM). The proposed one is different from the conventional AOL protocol in transmission of data and control over optical fiber.
arxiv
Wavelength selection beyond Turing
, 2017 Spatial patterns arising spontaneously due to internal processes are ubiquitous in nature, varying from regular patterns of dryland vegetation to complex structures of bacterial colonies. Many of these patterns can be explained in the context of a Turing
Tzuk, Omer, Zelnik, Yuval R.
core +2 more sources