Results 101 to 110 of about 2,708,251 (409)
FEBS 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
Wide-span and tunable-wavelength photon pairs around 1.55 μm from a silicon nanophotonic chip [PDF]
arXiv, 2013 Using a compact optically-pumped silicon nanophotonic chip consisting of coupled silicon microrings, we generate photon pairs in multiple pairs of wavelengths around 1.55 \mu m. The wavelengths are tunable over several nanometers, demonstrating the capability to generate wavelength division multiplexed photon pairs at freely-chosen telecommunications ...
arxiv
Polarimetry SAR detectors for monitoring Mediterranean forest fires events [PDF]
, 2018 Over the past decades, the great technological advances made in airborne and space sensors have led to a significant improvement of the remote sensing methods and techniques used for studying worldwide natural ecosystem disturbances.
Boardman, Carl P. +2 more
core
Four-Photon Quantum Interferometry at a Telecom Wavelength
, 2011 We report the experimental demonstration of four-photon quantum interference using telecom-wavelength photons. Realization of multi-photon quantum interference is essential to linear optics quantum information processing and measurement-based quantum ...
Hideo Kosaka +5 more
core +1 more source
Sub-optical wavelength acoustic wave modulation of integrated photonic resonators at microwave frequencies [PDF]
Nature 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
FEBS 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
Automatic Echelle Spectrograph Wavelength Calibration [PDF]
, 2019 Time domain astronomy and the increasing number of exoplanet candidates call for reliable, robust, and automatic wavelength calibration. We present an algorithm for wavelength calibrating \'echelle spectrographs that uses order-by-order extracted spectra and a list of laboratory wavelengths.
arxiv +1 more source
Wavelengths of Bacterial Flagella [PDF]
Journal 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
Optics 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
Journal of Applied Clinical Medical Physics, EarlyView.Abstract In radiation oncology, inter‐fractional dosimetry using optically stimulated luminescent detectors (OSLDs) ensures accurate plan delivery and patient safety. RadPro International GmbH's myOLSchip system, featuring a beryllium oxide (BeO) OSL dosimeter, reader, and eraser, was characterized and calibrated with a Varian Truebeam for in‐vivo ...
Heath Davis +3 more
wiley +1 more source