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Aproximadamente 394 registro(s) hasta el momento: (journal)

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Recurso libre

Metal complexes versus organocatalysts in asymmetric 1,3-dipolar cycloadditions
Nájera Domingo, Carmen - Sansano Gil, José Miguel - Yus Astiz, Miguel

Formato:	info:eu-repo/semantics/article
Enlaces:	In this review, a comparison between the Lewis acid catalysed and organocatalysed 1,3-dipolar cycloaddition is presented with special focus on the enantioselective synthesis of five-membered hetero- or carbocyclic systems, is described. These reactions exhibit very interesting features, but the most…
Fecha:	2010-03-10
Recurso:	RUA Docencia

Recurso libre

State downsizing as a determinant of infant mortality and achievement of Millennium Development Goal 4
Palma Solís, Marco Antonio - Álvarez-Dardet Díaz, Carlos - Franco Giraldo, Álvaro - Hernández Aguado, Ildefonso - Pérez Hoyos, Santiago

Formato:	info:eu-repo/semantics/article
Enlaces:	The aim of this study was to evaluate the worldwide effect of state downsizing policies on achievement of U.N. Millennium Development Goal 4 (MDG4) on infant mortality rates. In an ecological retrospective cohort study of 161 countries, from 1978 to…
Fecha:	2010-01-12
Recurso:	RUA Docencia

Recurso libre

Higher accurate approximate solutions for the simple pendulum in terms of elementary functions
Beléndez Vázquez, Augusto - Francés Monllor, Jorge - Ortuño Sánchez, Manuel - Gallego Rico, Sergi - Bernabeu Pastor, José Guillermo

Formato:	info:eu-repo/semantics/article
Enlaces:	A closed-form approximate expression for the solution of a simple pendulum in terms of elementary functions is obtained. To do this, the exact expression for the maximum tension of the string of the pendulum is first considered and a trial…
Fecha:	2010-05-03
Recurso:	RUA Docencia

Recurso libre

Fixation-free bleached silver halide transmission holograms recorded on Slavich PFG-01 red sensitive plates
Neipp López, Cristian - Beronich, Emiliano - Pascual Villalobos, Inmaculada - Beléndez Vázquez, Augusto

Formato:	info:eu-repo/semantics/article
Enlaces:	Bleaching is one of the most widely used techniques in the production of phase holograms of high quality on photographic emulsion, particularly in rehalogenating techniques without a fixation step. These techniques were very well understood when Agfa 8E75 HD emulsion…
Fecha:	2009-02-02
Recurso:	RUA Docencia

Recurso libre

Corrigendum to “Solution of the relativistic (an)harmonic oscillator using the harmonic balance method” [J. Sound Vib. 311 (2008) 1447–1456]
Beléndez Vázquez, Augusto - Pascual Villalobos, Carolina - Méndez Alcaraz, David Israel - Neipp López, Cristian

Formato:	info:eu-repo/semantics/article
Enlaces:	Descripción completa.
Fecha:	2009-02-02
Recurso:	RUA Docencia

Recurso libre

On the design of the huggable robot Probo
Saldien, Jelle - Goris, Kristof - Yilmazyildiz, Selma - Verhelst, Werner - Lefeber, Dirk

Formato:	info:eu-repo/semantics/article
Enlaces:	Nowadays robots are being created that interact with human beings in order to satisfy certain social needs. Following this trend, the development of the social robot Probo has started. The robot will be used in hospitals, as a tele-interface for…
Fecha:	2009-11-23
Recurso:	RUA Docencia

Recurso libre

Comparative study of bleaches applied to BB-640 plates
Neipp López, Cristian - Condeza, Shirley - Campos, Ana María - Pascual Villalobos, Inmaculada - Beléndez Vázquez, Augusto

Formato:	info:eu-repo/semantics/article
Enlaces:	The use of bleaching techniques is perhaps one of the most popular methods of creating phase holograms from holographic emulsions. In this paper we will study the influence of the different experimental conditions on the refractive index modulation created inside…
Fecha:	2009-01-30
Recurso:	RUA Docencia

Recurso libre

Colorimetric and spectral evaluation of the optical anisotropy of metallic and pearlescent samples
Chorro Calderón, Elísabet - Perales Romero, Esther - Martínez Verdú, Francisco Miguel - Campos Acosta, Joaquín - Pons Aglio, Alicia

Formato:	info:eu-repo/semantics/article
Enlaces:	The visual and optical anisotropies of metallic and pearlescent samples have been evaluated using a multi-gonio-spectrophotometer and by adapting a gonio-template over the instrument aperture for measuring the relative spectral reflectance factor when the sample is rotated around an axis…
Fecha:	2010-02-04
Recurso:	RUA Docencia

Recurso libre

Visualization and modelling of the polarization layer and a reversible adsorption process in PEG-10000 dead-end ultrafiltration
Fernández Sempere, Julio - Ruiz Beviá, Francisco - García Algado, Pedro - Salcedo Díaz, Raquel

Formato:	info:eu-repo/semantics/article
Enlaces:	Real-time holographic interferometry has been used to visualize the evolution of the polarization layer during dead-end ultrafiltration of PEG-10000. Several experiments at a constant pressure of 1 bar and varying the feed concentration of PEG-10000 (5–12.5 kg/m3) have been carried…
Fecha:	2010-06-18
Recurso:	RUA Docencia

Recurso libre

10.

Mutations at pipX suppress lethality of PII-deficient mutants of Synechococcus elongatus PCC 7942
Espinosa Manzano, Javier - Castells Rico, Miguel Ángel - Laichoubi, Karim Boumediene - Contreras de Vera, Asunción

Formato:	info:eu-repo/semantics/article
Enlaces:	The PII proteins are found in all three domains of life as key integrators of signals reflecting the balance of nitrogen and carbon. Genetic inactivation of PII proteins is typically associated with severe growth defects or death. However, the molecular…
Fecha:	2010-10-28
Recurso:	RUA Docencia