Results 91 to 100 of about 2,732,015 (387)

The Impact of the Wavelength and Its Transmittance on the Visual Evoked Potentials, at Baseline, and under the Effect of Six Monochromatic Filters Used for Visual Treatments

open access: yesSensors, 2023
Purpose: This is an observational, non-invasive study which measures the VEPs of twelve individuals, at baseline, and under the effect of six monochromatic filters used in visual therapy, to understand their effect on neural activity to propose ...
Danjela Ibrahimi   +4 more
doaj   +1 more source

Iron‐dependent lysosomal LDL oxidation induces the expression of scavenger receptor A in human THP‐1 monocytes

open access: yesFEBS Open Bio, EarlyView.
In human monocytic cells THP‐1, a limited uptake of native—not oxidized—LDL/VLDL induced expression of scavenger receptor A and cellular adhesion. Induction was inhibited by lysosomotropic (WR‐1065) and lipophilic (BHT) antioxidants and by siRNAs against ferritinophagy.
Martina Čierna   +4 more
wiley   +1 more source

Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies [PDF]

open access: yesNature Communications, 2014
Light–sound interactions have long been exploited in various acousto-optic devices based on bulk crystalline materials. Conventionally, these devices operate in megahertz frequency range where the acoustic wavelength is much longer than the optical ...
S. Tadesse, Mo Li
semanticscholar   +1 more source

An approach for coherent periodogram averaging of tilt‐series data for improved contrast transfer function estimation

open access: yesFEBS Open Bio, EarlyView.
The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley   +1 more source

A Novel Solution to the Dynamic Routing and Wavelength Assignment Problem in Transparent Optical Networks

open access: yes, 2010
We present an evolutionary programming algorithm for solving the dynamic routing and wavelength assignment (DRWA) problem in optical wavelength-division multiplexing (WDM) networks under wavelength continuity constraint.
Bhanja, Urmila   +2 more
core   +1 more source

Wavelengths of Bacterial Flagella [PDF]

open access: yesJournal of General Microbiology, 1954
SUMMARY: In sunlight dark-ground microscopy the flagella of a packet of motile sarcina appear as a smooth tail. The tails often stiffen into helices of two different wavelengths, one being twice as long as the other. The short and the long wavelengths are identical in Sarcina ureea and S. agilis. This phenomenon of two wavelengths, one twice as long as
G. Abraham, A. Pijper
openaire   +3 more sources

Earthing effects on mitochondrial function: ATP production and ROS generation

open access: yesFEBS Open Bio, EarlyView.
In contrast to sham and naive controls, grounded mitochondria not only exhibit significantly enhanced energy production but also demonstrate a remarkable reduction in membrane potential and oxidative stress. This suggests a profound improvement in mitochondrial health, presenting a promising avenue for therapeutic interventions.
Cecilia Giulivi, Richard Kotz
wiley   +1 more source

Specific wavelength colorimeter [PDF]

open access: yes, 1974
A self contained, specific wavelength, single beam colorimeter is described for direct spectrophotometric measurement of the concentration of a given solute in a test sample.
Brawner, C. C.   +2 more
core   +1 more source

Wavelength-swept Tm-doped fiber laser operating in the two-micron wavelength band [PDF]

open access: yes, 2014
A wavelength-swept thulium-doped silica fiber laser using an intracavity rotating slotted-disk wavelength scanning filter in combination with an intracavity solid etalon for passive control of temporal and spectral profiles is reported. The laser yielded
C. S. Chenug   +19 more
core   +1 more source

Tunable and switchable dual-wavelength Tm-doped mode-locked fiber laser by nonlinear polarization evolution.

open access: yesOptics Express, 2015
We propose and demonstrate a tunable and switchable dual-wavelength ultra-fast Tm-doped fiber laser. The tunability is based on nonlinear polarization evolution (NPE) technique in a passively mode-locked laser cavity.
Zhiyu Yan   +6 more
semanticscholar   +1 more source

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