Results 31 to 40 of about 2,708,251 (409)
Variation in length of alpha waves reveals how forebrain activity is organized [PDF]
Research Ideas and Outcomes, 2020 Background The cerebral cortex is composed of functional units known as columns. The “two levels” hypothesis states that the activity in a column is either at a high level or at a normal, relatively low level.
Tomas Johannisson
doaj +3 more sources
Tune-out wavelengths for the alkaline earth atoms [PDF]
PhysRevA.88.022511 (2013), 2013 The lowest 3 tune-out wavelengths of the four alkaline-earth atoms, Be, Mg, Ca and Sr are determined from tabulations of matrix elements produced from large first principles calculations. The tune-out wavelengths are located near the wavelengths for $^3P^o_1$ and $^1P^o_1$ excitations.
arxiv +1 more source
Wavelength dimensioning for wavelength-routed WDM satellite network [PDF]
Chinese Journal of Aeronautics, 2016 AbstractInternet and broadband applications driven by data traffic demand have become key drivers for satellite constellations. The key technology to satisfy the high capacity requirements between satellites is optical satellite networks by means of wavelength division multiplexing inter-satellite links (ISLs) with wavelength routing (WDM-OSN).
Wei Guo +3 more
openaire +1 more source
Wavelength dependence of the optical depth of biomass burning, urban, and desert dust aerosols
, 1999 The Angstrom wavelength exponent α, which is the slope of the logarithm of aerosol optical depth (τ a ) versus the logarithm of wavelength (λ), is commonly used to characterize the wavelength dependence of τ a and to provide some basic information on the
T. Eck +7 more
semanticscholar +1 more source
Wavelength conversion at 10 Gb/s by four-wave mixing over a 30-nm interval [PDF]
, 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
Coherent control with a short-wavelength free-electron laser [PDF]
Nature Photonics, 2016 Researchers demonstrate correlation of two colours (63.0 and 31.5 nm wavelengths) in a free-electron laser and control photoelectron angular distribution by adjusting phase with 3 attosecond resolution. Extreme ultraviolet and X-ray free-electron lasers (
K. Prince +43 more
semanticscholar +1 more source
Environmental Cycles, Melatonin, and Circadian Control of Stress Response in Fish
Frontiers in Endocrinology, 2019 Fish have evolved a biological clock to cope with environmental cycles, so they display circadian rhythms in most physiological functions including stress response.
Francisco Javier Sánchez-Vázquez +5 more
doaj +1 more source
Journal of the American Chemical Society, 2022 The careful mapping of photoinduced reversible-deactivation radical polymerizations (RDRP) is a prerequisite for their applications in soft matter materials design. Here, we probe the wavelength-dependent behavior of photochemically induced atom transfer radical polymerization (ATRP) using nanosecond pulsed-laser polymerization (PLP). The photochemical
Martina Nardi +2 more
openaire +4 more sources
Control of dual-wavelength laser emission via optical feedback phase tuning [PDF]
arXiv, 2022 We propose and demonstrate a technique to control the balance between the two amplitudes of a dual-wavelength laser based on a phase-controlled optical feedback. The feedback cavity length is adjusted to achieve a relative phase shift between the desired emission wavelengths, introducing a boost in gain for one wavelength while the other wavelength ...
arxiv
Instabilities and soot formation in spherically expanding, high pressure, rich, iso-octane-air flames [PDF]
, 2006 Flame instabilities, cellular structures and soot formed in high pressure, rich, spherically expanding iso-octane-air flames have been studied experimentally using high speed Schlieren cinematography, OH fluorescence, Mie scattering and laser induced ...
Al-Shahrany A S +6 more
core +1 more source