Search results for " bubble"

Air bubble location inside the uterus after transfer: is the embryo really there?

2007

Objective To demonstrate that the location of the air bubble after embryo transfer (ET) does not necessarily indicate the final embryo location. Design Case report. Setting Private clinic. Patient(s) A couple with primary infertility for whom a diagnosis of bicornuate uterus with a very open angle between horns was confirmed. Intervention(s) Laparoscopy and hysteroscopy were performed before an IVF cycle in which a single embryo was replaced. Main Outcome Measure(s) Air bubble image immediately after ET and gestational sac location 3 weeks later. Result(s) Immediately after a single ET, the air bubble was seen in the left uterine horn. Three weeks later, a gestational sac was seen in the ri…

On Combinatorial Generation of Prefix Normal Words

2014

A prefix normal word is a binary word with the property that no substring has more 1s than the prefix of the same length. This class of words is important in the context of binary jumbled pattern matching. In this paper we present an efficient algorithm for exhaustively listing the prefix normal words with a fixed length. The algorithm is based on the fact that the language of prefix normal words is a bubble language, a class of binary languages with the property that, for any word w in the language, exchanging the first occurrence of 01 by 10 in w results in another word in the language. We prove that each prefix normal word is produced in O(n) amortized time, and conjecture, based on expe…

Detection potential of the KM3NeT detector for high-energy neutrinos from the Fermi bubbles

2013

A recent analysis of the Fermi Large Area Telescope data provided evidence for a high-intensity emission of high-energy gamma rays with a E-2 spectrum from two large areas, spanning 50 above and below the Galactic centre (the "Fermi bubbles"). A hadronic mechanism was proposed for this gamma-ray emission making the Fermi bubbles promising source candidates of high-energy neutrino emission. In this work Monte Carlo simulations regarding the detectability of high-energy neutrinos from the Fermi bubbles with the future multi-km(3) neutrino telescope KM3NeT in the Mediterranean Sea are presented. Under the hypothesis that the gamma-ray emission is completely due to hadronic processes, the resul…

A search for neutrino emission from the Fermi bubbles with the ANTARES telescope

2014

Adrián-Martínez, S. et al.

Prompt TeV Emission from Cosmic Rays Accelerated by Gamma Ray Bursts Interacting with Surrounding Stellar Wind

2009

11 pages, 1 figure.--ISI article identifier:000263148600009.-- ArXiv pre-print avaible at:http://arxiv.org/abs/0810.1287

Digitālo mediju ietekme uz lēmumu pieņemšanu un demokrātiju

2018

Mūsdienās tādu tehnoloģiju progress kā mākslīgais intelekts apvienojumā ar Lielo Datu analīzi ir devis iespēju ievākt, uzturēt un analizēt milzīgus datu apjomus. Progress digitālajā jomā ietekmē ne tikai tirgus ekonomiku, bet arī politisko līdzdalību. Digitālie mediji spēj apvienot līdzīgi domājošos, iedrošināt sociālas aktivitātes, mazināt plaisas starp sabiedrības grupām, kā arī paaugstināt politisko līdzdalību valstī un veicināt izglītību, tomēr ir pastiprinātas bažas par to, ka digitālo mediju platformas var tikt izmantotas, lai izplatītu propagandas vēstījumus, kas is spējīga piesaistīt lielu auditoriju. Automātiskajiem filtrēšanas mehānismiem var piemist diskriminējošs raksturs, ietek…

Modelling and Simulation of Gas–liquid Hydrodynamics in a Rectangular Air-lift Reactor

2013

Abstract Computational Fluid Dynamics is a quite well established tool for carrying out realistic simulations of process apparatuses. However, as a difference from single phase systems, for multiphase systems the development of CFD models is still in progress. Among the two-phase systems, gas–liquid systems are characterised by an additional complexity level, related to the fact that bubble sizes are not known in advance, being rather the result of formation and breakage-coalescence dynamics and therefore of complex phenomena related to flow dynamics and interfacial effects. In the present work, Euler–Euler Reynolds-averaged flow simulations of an air-lift reactor are reported. All bubbles …

CFD prediction of bubbles local gas hold-up in 2-dimensional gas-solid fluidized beds

2008

Shrinkage Bubbles: The C–O–H–S Magmatic Fluid System at San Cristóbal Volcano

2018

New analytical results for the composition of shrinkage bubbles (09-70 vol. %) in olivine-hosted (Fo <80%) primary melt inclusions (MIs) have been incorporated into a novel geochemical model for San Cristó bal volcano, Nicaragua. The vapour, liquid, and mineral components found inside shrinkage bubbles may represent relics of early C-O-H-S fluids exsolved from a magmatichydrothermal system. This conclusion is supported by high-resolution Raman microspectroscopy revealing: (1) gaseous CO2 (d=0·17-0·31 g/cm3 in 31 samples) coexisting with liquid H2O (in seven samples) at ambient temperature (<22°C) inside the shrinkage bubbles of naturally quenched inclusions; (2) several mineral phases (i.e.…

Cavitation of electron bubbles in liquid parahydrogen

2011

Within a finite-temperature density functional approach, we have investigated the structure of electron bubbles in liquid parahydrogen below the saturated vapour pressure, determining the critical pressure at which electron bubbles explode as a function of temperature. The electron-parahydrogen interaction has been modelled by a Hartree-type local potential fitted to the experimental value of the conduction band-edge for a delocalized electron in pH(2). We have found that the pressure for bubble explosion is, in absolute value, about a factor of two smaller than that of the homogeneous cavitation pressure in the liquid. Comparison with the results obtained within the capillary model shows t…