Results 91 to 100 of about 487,611 (179)

Vision measurement and psychophysical tests [PDF]

open access: yes, 2008
Vision measurement is the basis for the study and standardization of visual sciences. Measurement of visual acuity has great value for research and for clinical practice.
Carvalho, Luis Alberto Vieira De   +2 more
core   +2 more sources

Mixedness and entanglement for two-mode Gaussian states

open access: yes, 2012
We analytically exploit the two-mode Gaussian states nonunitary dynamics. We show that in the zero temperature limit, entanglement sudden death (ESD) will always occur for symmetric states (where initial single mode compression is $z_0$) provided the two
Adesso   +49 more
core   +2 more sources

ENTANGLEMENT BETWEEN TWO SINGLE-PHOTON SOURCES DUE TO A BEAM SPLITTER

open access: yesMomento, 2014
We consider a quantum dot of frequency w_s embedded in a semiconductor microcavity interacting with an electromagnetic mode of frequency w_a. The cavity is subject to a pumping laser of power W and frequency w_L, and to dissipative mechanisms such as ...
Juan C López-Carreño   +1 more
doaj  

SEDOPTICA newsletter: noticias de SEDOPTICA [PDF]

open access: yes, 2019
El boletín de noticias de SEDOPTICA recoge la actividad de la sociedad y de sus miembros en el cuarto y último trimestre del año 2019.Peer ReviewedPostprint (published ...
Millán Garcia-Varela, M. Sagrario   +2 more
core  

Experimental evidence for ultrashort-lived spin polarons in EuSe

open access: yesAIP Advances
We investigated the time evolution of the density of giant spin polarons in a magnetic semiconductor. Spin polarons (SPs) were photoexcited and observed using time-resolved Faraday rotation.
S. C. P. van Kooten, A. B. Henriques
doaj   +1 more source

The anisotropic quantum Rabi model with diamagnetic term

open access: yesFrontiers in Physics
We employ a squeeze operator transformation approach to solve the anisotropic quantum Rabi model that includes a diamagnetic term. By carefully adjusting the amplitude of the diamagnetic term, we demonstrate that the anisotropic Rabi model with the A2 ...
Jorge A. Anaya-Contreras   +3 more
doaj   +1 more source

Planificación de Redes Troncales de Conmutación Óptica Transparente [PDF]

open access: yes, 2009
El continuo crecimiento de Internet está obligando a buscar nuevos medios para proporcionar mayores capacidades de transmisión en las redes de comunicaciones.
Aparicio Pardo, Ramón   +2 more
core   +1 more source

Acceso a la optometría y el rol del optometrista en Castilla y León [PDF]

open access: yes, 2019
Comparación de la opinión general de la gente a cerca del óptico optometrista, de sus competencias y el papel que desempeña en España. Material y métodos: Hemos realizado un cuestionario ocular en Valladolid, Ponferrada y Burgos tanto dentro de un ...
Andrés González, María Mercedes
core  

ANÁLISIS DIGITAL DE IMÁGENES DE FASE PARA EL ESTUDIO DE CULTIVOS DE CELULAS MADRE MESENQUIMALES

open access: yesAnales (Asociación Física Argentina), 2013
En los últimos años se ha visto como las células madre o troncales han pasado de ser un concepto de interés científico principalmente en el campo de la biología, a ocupar tantas páginas en las revistas científicas como en la prensa.
Horacio Castellini   +6 more
doaj  

Temporal Progression of Entry Factors into the Vicious Circle of Dry Eye in Untreated Sufferers

open access: yesLife
Background: Dry eye disease (DED) is characterized by the loss of ocular surface homeostasis with specific signs and symptoms. Studying the progression of a multifactorial disease is exceedingly challenging for researchers because several factors can ...
Jacobo Garcia-Queiruga   +5 more
doaj   +1 more source

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