Browsing by Title
Now showing items 62895-62914 of 91979
-
(Royal Society Publishing, 2018)We report for the first time on the formation of spirals like vegetation patterns in isotropic and uniform environmental conditions. The vegetation spirals are not waves and they do not rotate. They belong to the class of ...
-
(American Physical Society, 2015)We demonstrate the first experimental realization of a dispersionless state, in a photonic Lieb lattice formed by an array of optical waveguides. This engineered lattice supports three energy bands, including a perfectly ...
-
(Nature, 2020)We report on the observation and characterization of broad-band waveguiding of surface gravity waves in an open channel, in the shallow water limit. The waveguide is constructed by changing locally the depth of the fluid ...
-
(Elsevier, 2017)We experimentally study the transport properties of dipolar and fundamental modes on one dimensional (1D) coupled waveguide arrays. By carefully modulating a wide optical beam, we are able to effectively excite dipolar or ...
-
(Elsevier, 2016)In analysis of experiments carried during September 2008 using secondary cosmic ray detectors located in Chacaltaya (Bolivia) and Niteroi (Brazil), Augusto et al. (2010) showed an increase in the intensity of charged ...
-
(IOP Publishing Ltd, 2018)We report on the experimental realization of a quasi-one-dimensional photonic graphene ribbon supporting four flat-bands (FBs). We study the dynamics of fundamental and dipolar modes, which are analogous to the s and p ...
-
(OPTICAL SOC AMER, 2010-08-15)We study experimentally light localization at phase-slip waveguides and at the intersection of phase-slips in a two-dimensional (2D) square photonic lattice. Such system allows to observe a variety of effects, including ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2005-02)An experimental study of the instability modes of a laminar axisymmetric thermal plume under symmetrical controlled disturbances of varicose type was carried out. The Schlieren technique was used to investigate the considered ...
-
(2013)Phosphofructokinase-2 is a dimeric enzyme that undergoes cold denaturation following a highly cooperative N2 2I mechanism with dimer dissociation and formation of an expanded monomeric intermediate. Here, we use intrinsic ...
-
(Sociedad Chilena de Quimica, 1999)The EPR spectra of a series of mononuclear complexes [CpFe(dppe)SR]PF6 R = C6H5 (1), C3H7 (2), p-C6H4Br (3) and the binuclear [CpFe(dppe)-S-CH2CH2-S-CpFe(dppe)](PF6) 2 (4) were measured. All the paramagnetic complexes ...
-
(AMERICAN PHYSICAL SOC, 2006-08-25)We report on the observation of surface gap solitons found to exist at the interface between uniform and periodic dielectric media with defocusing nonlinearity. We demonstrate strong self-trapping at the edge of a LiNbO3 ...
-
Observation of the gradual transition from one-dimensional to two-dimensional Anderson localization (OPTICAL SOC AMER, 2012-02-15)We study the gradual transition from one-dimensional (1D) to two-dimensional (2D) Anderson localization upon transformation of the dimensionality of disordered waveguide arrays. An effective transition from a 1D to a 2D ...
-
(EDP SCIENCES, 2015)Context. The distance of pulsating stars, in particular Cepheids, are commonly measured using the parallax of pulsation technique. The different versions of this technique combine measurements of the linear diameter variation ...
-
(ESO, 2016-03)Context. The distance to pulsating stars is classically estimated using the parallax-of-pulsation (PoP) method, which combines spectroscopic radial velocity (RV) measurements and angular diameter (AD) estimates to derive ...
-
(Royal Astronomical Society, 2010)We present constraints on the progenitor metallicities of core-collapse supernovae. To date, nearly all metallicity constraints have been inferred from indirect methods such as metallicity gradients in host galaxies, ...
-
(Wiley-Blackwell, 2016)
-
(2007)Context. Observations indicate that present-day star formation in the Milky Way disk takes place in stellar ensembles or clusters rather than in isolation. Bound, long-lived stellar groups are known as open clusters. They ...
-
(CSIRO, 2014)In this study of iron- and silica-bearing nanoparticle and colloid aggregates in slightly acidic mine drainage, we combined bulk scale geochemistry techniques with detailed nanoscale analyses using high-resolution transmission ...
-
(Neotropical Ornithological Society, 2017)The Chestnut-throated Huet-huet (Pteroptochus castaneus) is a poorly known species, endemic to Chile and Argentina. Here we describe observations made during eight days on a nest with two nestlings of the Chestnut-throated ...
-
(Neotropical Ornithological Society, 2017)© The Neotropical Ornithological Society. The Chestnut-throated Huet-huet (Pteroptochus castaneus) is a poorly known species, endemic to Chile and Argentina. Here we describe observations made during eight days on a nest ...
