Results 21 to 30 of about 1,935,997 (301)

Motion of a Self-Propelling Micro-Organism in a Channel Under Peristalsis: Effects of Viscosity Variation

open access: yesNonlinear Analysis, 2007
The motion of a self propelling micro-organism symmetrically located in a rectangular channel containing viscous fluid has been studied by considering the peristaltic and longitudinal waves travelling along the walls of the channel.
G. Radhakrishnamacharya, R. Sharma
doaj   +1 more source

Locking and wavelength selection of an ultra-collimated single-mode diode laser bar by a volume holographic grating [PDF]

open access: yes, 2013
Wavelength-locking by a volume holographic grating (VHG) is reported for a diode laser bar with 49 single mode emitters, fitted with a dual-axis collimation phase-plate for smile elimination and excellent beam pointing correction.
Baker, Howard John   +2 more
core   +1 more source

On Wavelength-Routed Networks With Reversible Wavelength Channels

open access: yesJournal of Lightwave Technology, 2013
We observe that the performance of wavelength- routed (WR) networks often suffers from asymmetric traffic and network traffic patterns differing from the original design plans. WR networks with a fixed number of channels in a given transmission direction are inflexible. Therefore, we propose reversible wavelength channels.
Li, CY, Wai, PKA, Li, VOK
openaire   +3 more sources

Ultra-broadband wavelength-swept Tm-doped fiber laser using wavelength-combined gain stages [PDF]

open access: yes, 2015
A wavelength-swept thulium-doped fiber laser system employing two parallel cavities with two different fiber gain stages is reported. The fiber gain stages were tailored to provide emission in complementary bands with external wavelength-dependent ...
Agger   +15 more
core   +1 more source

INSTRUMENTAL COLOR MEASUREMENT OF MEAT AND MEAT PRODUCTS IN X-RITECOLOR®MASTER [PDF]

open access: yesApplied Computer Science, 2020
The aim of the study was to evaluate the influence of lyophilized plant extract on color of canned meat with reduced amount of sodium (III) nitrite measured by spectrophotometric methods.
Karolina FERYSIUK   +3 more
doaj   +1 more source

Wavelength conversion at 10 Gb/s by four-wave mixing over a 30-nm interval [PDF]

open access: yes, 1998
We show that the use of a long semiconductor optical amplifier increases the error-free conversion interval of a four-wave mixing (FWM)-based wavelength converter.
D'Ottavi, A.   +6 more
core   +1 more source

Backscatter Distributions of Persistent and Distributed Scatterers Over Wavelength: Results From X-, C-, and L-Band

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Persistent scatterer (PS) techniques are a set of important time-series tools for interferometric synthetic aperture radar (InSAR) that enable deformation analysis in highly decorrelated terrain.
Stacey Huang, Howard A. Zebker
doaj   +1 more source

Er:YAG and Diode Lasers in Treatment of Peri-Implantitis–A Case Report [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2019
One of the leading causes of dental implant loss in the present time is peri-implantitis. This paper describes a clinical case of peri-implantitis treatment using Er:YAG and a 980-nm diode laser.
Alexandros Nikita
doaj   +1 more source

Preferences of Dairy Cattle for Supplemental Light-Emitting Diode Lighting in the Resting Area

open access: yesAnimals, 2022
Light from the environment is important for vision and regulating various biological processes. Providing supplemental lighting in the stall area could allow for individually targeted or group-level control of light. This study aimed to determine whether
Angela M. Wilson   +3 more
doaj   +1 more source

INCREASING THE LEVEL OF PHOTO BIOLOGICAL SAFETY OF THE EMISSION SPECTRUM OF AN LED LIGHT SOURCE

open access: yesСучасний стан наукових досліджень та технологій в промисловості, 2020
The subject of research is the emission spectra of light sources based on LED structures. The purpose of the work is to formulate proposals to improve the photo biological safety of LED lighting systems.
Igor Bondarenko   +3 more
doaj   +1 more source

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