Metabuscador

Filtrado por:

Temas

Educación Física y Deportiva (85)
Física Aplicada (73)
Óptica (64)
Ciencia de la Computación e Inteligencia Artificial (58)
Holography (39)
Más...

Idiomas

Español (1)
Más...

Año

2013 (10)
2012 (44)
2011 (37)
2008 (86)
2006 (39)
2004 (20)
Más...

Aproximadamente 494 registro(s) hasta el momento: (journal)

Mostrar 10 | 50 | 100 resultados por página

Recurso libre

Solution of the relativistic (an)harmonic oscillator using the harmonic balance method
Beléndez Vázquez, Augusto - Pascual Villalobos, Carolina - Méndez Alcaraz, David Israel - Neipp López, Cristian

Formato:	info:eu-repo/semantics/article
Enlaces:	The harmonic balance method is used to construct approximate frequency–amplitude relations and periodic solutions to the relativistic oscillator. By combining linearization of the governing equation with the harmonic balance method, we construct analytical approximations to the oscillation frequencies and periodic…
Fecha:	2009-01-29
Recurso:	RUA Docencia

Recurso libre

Scale corrections for faster evaluation of convergent Fresnel patterns
Mas Candela, David - Espinosa Tomás, Julián - Pérez Rodríguez, Jorge - Illueca Contri, Carlos

Formato:	info:eu-repo/semantics/article
Enlaces:	Numerical calculation of Fresnel patterns through fast Fourier transforms usually requires an extremely large number of samples in order to fulfil the Nyquist sampling condition. In many applications, the cut-off frequency of the system is much below the limit fixed…
Fecha:	2007-10-02
Recurso:	RUA Docencia

Recurso libre

Harmonic balance approaches to the nonlinear oscillators in which the restoring force is inversely proportional to the dependent variable
Beléndez Vázquez, Augusto - Méndez Alcaraz, David Israel - Beléndez Vázquez, Tarsicio - Hernández Prados, Antonio - Álvarez López, Mariela Lázara

Formato:	info:eu-repo/semantics/article
Enlaces:	The second-order harmonic balance method is used to construct three approximate frequency-amplitude relations for a conservative nonlinear singular oscillator in which the restoring force is inversely proportional to the dependent variable. Two procedures are used to solve the nonlinear differential…
Fecha:	2009-01-26
Recurso:	RUA Docencia

Recurso libre

Analytical approximate solutions for conservative nonlinear oscillators by modified rational harmonic balance method
Beléndez Vázquez, Augusto - Gimeno Nieves, Encarnación - Álvarez López, Mariela Lázara - Yebra Calleja, María Soledad - Méndez Alcaraz, David Israel

Formato:	info:eu-repo/semantics/article
Enlaces:	An analytical approximate technique for conservative nonlinear oscillators is proposed. This method is a modification of the generalized harmonic balance method in which analytical approximate solutions have rational form. This approach gives us not only a truly periodic solution but…
Fecha:	2009-10-22
Recurso:	RUA Docencia

Recurso libre

Play-sport culture
Hosta, Milan

Formato:	info:eu-repo/semantics/article
Enlaces:	Our intention in this paper is to shortly address some of the basic categories that determine the paradigm of sport culture as we know it. We do believe that by understanding these basic categories the changes of prevailing sport paradigm,…
Fecha:	2009-07-03
Recurso:	RUA Docencia

Recurso libre

The Bayesians nets in the study of free time: determination of social-demographic profile of the Cuban population
Ruiz Juan, Francisco - García Montes, María Elena - Gómez López, Manuel

Formato:	info:eu-repo/semantics/article
Enlaces:	The current study attempts to describe the free time of City of Havana (Cuba) population older than 15 years, distinguishing between word days, weekends and vacation and holiday periods, determining the population's socio-demographic profile. The object population of study numbers…
Fecha:	2009-07-03
Recurso:	RUA Docencia

Recurso libre

Analytical approximations for the period of a nonlinear pendulum
Beléndez Vázquez, Augusto - Hernández Prados, Antonio - Márquez Ruiz, Andrés - Beléndez Vázquez, Tarsicio - Neipp López, Cristian

Formato:	info:eu-repo/semantics/article
Enlaces:	This paper deals with the non-linear oscillation of a simple pendulum and presents an approach for solving the non-linear differential equation that governs its movement by using the harmonic balance method. With this technique it is possible to easily obtain…
Fecha:	2007-10-27
Recurso:	RUA Docencia

Recurso libre

Body composition and fitness in elite Spanish children tennis players
Berdejo del Fresno, Daniel - Vicente Rodríguez, Germán - González Ravé, José María - Moreno, Luis Antonio - Rey López, Juan Pablo

Formato:	info:eu-repo/semantics/article
Enlaces:	The aims of this study were to describe body composition and physical fitness changes during a whole-season in elite children tennis players. A total of 7 elite children tennis players participated in the study. Whole body composition by dual energy…
Fecha:	2010-06-02
Recurso:	RUA Docencia

Recurso libre

Effect of intense muscular activity on motor potentials under magnetic stimulation of brain and spinal cord
Fomin, Roman - Sergeev, Vitaly - Nesterik, Kristina - Kosminin, Vladimir

Formato:	info:eu-repo/semantics/article
Enlaces:	In this work, the parameters of motor evoked potentials of upper and lower extremity muscles were evaluated, under magnetic stimulation of cerebral cortex motor areas, spinal segments, and nerve tibialis in athletes adapted to work of various duration and intensity…
Fecha:	2010-10-26
Recurso:	RUA Docencia

Recurso libre

10.

Geometrical Optics and Riemannian Geometry
Carretero López, Luis - Mateos Álvarez, Felipe - Beléndez Vázquez, Augusto

Formato:	info:eu-repo/semantics/article
Enlaces:	The methods of differential geometry are used with the assumption that rays of light follow geodesic trajectories in a space whose metric is determined by the refraction index. Keeping this in mind, we show that these hypotheses are equivalent to…
Fecha:	2009-03-20
Recurso:	RUA Docencia

Recurso libre

11.

Effects of a carbohydrate and a carbohydrate and casein protein beverages on recovery and performance of endurance cycling capacity
Cepero González, Mar - Rojas Ruiz, Francisco Javier - Geerlings, Arjan - Cruz Márquez, Juan Carlos de la - Romero Granados, Santiago - Boza Puerta, Julio José

Formato:	info:eu-repo/semantics/article
Enlaces:	The main aim of this study was to determine if short-term post exercise recovery, cycling performance and muscle damage were altered when consuming a carbohydrate-only beverage (CHO, 7% carbohydrate) versus a carbohydrate and casein protein beverage (CHO+P, 7% carbohydrate and…
Fecha:	2009-07-03
Recurso:	RUA Docencia

Recurso libre

12.

Teaching and learning social values: experience of resolution of conflicts in the classroom of physical education across the learning of social skills
Cepero González, Mar - Marín Regalado, María Nieves - Torres Guerrero, Juan

Formato:	info:eu-repo/semantics/article
Enlaces:	The main aim of this study has been the application of a sport and social program intervention to solve the daily problems of conviviality in the classroom of physical education, based on the teaching and learning of social values, attitudes…
Fecha:	2010-12-16
Recurso:	RUA Docencia

Recurso libre

13.

Multi-cue visual obstacle detection for mobile robots
Manso Fernández-Arguelles, Luis Jesús - Bustos García de Castro, Pablo - Bachiller Burgos, Pilar - Moreno del Pozo, José

Formato:	info:eu-repo/semantics/article
Enlaces:	Autonomous navigation is one of the most essential capabilities of autonomous robots. In order to navigate autonomously, robots need to detect obstacles. While many approaches achieve good results tackling this problem with lidar sensor devices, vision based approaches are cheaper…
Fecha:	2010-02-11
Recurso:	RUA Docencia

Recurso libre

14.

A framework to analyse gender bias in epidemiological research
Ruiz Cantero, María Teresa - Vives Cases, Carmen - Artazcoz, Lucía - Delgado, Ana - García Calvente, María del Mar - Miqueo, Consuelo - Montero Piñar, María Isabel - Ortiz Moncada, Rocío - Ronda Pérez, Elena - Ruiz Pérez, Isabel - Valls, Carme

Formato:	info:eu-repo/semantics/article
Enlaces:	The design and analysis of research may cause systematic gender dependent errors to be produced in results because of gender insensitivity or androcentrism. Gender bias in research could be defined as a systematically erroneous gender dependent approach related to social…
Fecha:	2008-02-15
Recurso:	RUA Docencia

Recurso libre

15.

Development of a measure to assess quality management in certified firms
Conca Flor, Francisco José - Llopis Taverner, Juan - Tarí Guilló, Juan José

Formato:	info:eu-repo/semantics/article
Enlaces:	The theory of quality management has been studied from different areas: quality leaders' ideas, empirical research and formal evaluation models. This has helped identify a set of critical factors for a successful implementation, as a way to improve customer satisfaction…
Fecha:	2007-09-12
Recurso:	RUA Docencia

Recurso libre

16.

Relationships between dry land strength, power variables and short sprint performance in young competitive swimmers
Garrido, Nuno - Marinho, Daniel A. - Barbosa, Tiago M. - Costa, Aldo M. - Silva, António J. - Pérez Turpin, José Antonio - Marques, Mário C.

Formato:	info:eu-repo/semantics/article
Enlaces:	The aim of this study was to identify the dry land strength and power tests that can better relate with sprint swimming performance in young competitive swimmers. Twenty-eight (16 boys and 12 girls) young competitive swimmers of national level (12.01…
Fecha:	2010-06-02
Recurso:	RUA Docencia

Recurso libre

17.

Domestic applications for social robots: an online survey on the influence of appearance and capabilities
Lohse, Manja - Hegel, Frank - Wrede, Britta

Formato:	info:eu-repo/semantics/article
Enlaces:	Can you imagine a useful task you would like a social robot to perform for you? This paper presents an Internet survey where participants were asked this question to identify applications for social robots. The applications mentioned by the participants…
Fecha:	2009-11-23
Recurso:	RUA Docencia

Recurso libre

18.

Foundations and practices of unified modeling language: J.UCS special issue
Kim, Dae-Kyoo - Trujillo Mondéjar, Juan Carlos

Formato:	info:eu-repo/semantics/annotation
Enlaces:	Descripción completa.
Fecha:	2012-03-08
Recurso:	RUA Docencia

Recurso libre

19.

Evaluation of walking speed tests as a measurement of functional limitations in elderly people: a structured review
Muñoz Mendoza, Carmen Luz - Cabrero García, Julio - Reig Ferrer, Abilio - Cabañero Martínez, María José

Formato:	info:eu-repo/semantics/article
Enlaces:	El objetivo de este estudio teórico fue valorar el modelo conceptual, la carga, la interpretabilidad, los efectos suelo y techo, la fiabilidad, la validez y la sensibilidad al cambio de los tests de velocidad de andar como medida de limitaciones…
Fecha:	2010-12-09
Recurso:	RUA Docencia

Recurso libre

20.

New directions in European public health research: report of a workshop
Clarke, Aileen - McCarthy, Mark - Álvarez-Dardet Díaz, Carlos - Sogoric, Selma - Groenewegen, Peter - Groot, Wim - Delnoij, Diana

Formato:	info:eu-repo/semantics/article
Enlaces:	Public health draws from a range of academic disciplines, social, medical and statistical, and answers questions relevant to improving the health of populations. We have initiated a Europe-wide study, Strengthening Public Health Research in Europe, to assess the development and…
Fecha:	2008-11-03
Recurso:	RUA Docencia

Recurso libre

21.

Refractive analysis of the human cornea through propagated fields
Illueca Contri, Carlos - Mas Candela, David - Pérez Rodríguez, Jorge - Pons Moreno, Álvaro Máximo - Artigas Verde, José María

Formato:	info:eu-repo/semantics/article
Enlaces:	A new technique for analysing the optical quality of the human cornea is presented. Corneal maps are obtained through keratographies and then converted into phase maps. The propagated fields generated from this surface are plotted and studied. It is shown…
Fecha:	2007-10-16
Recurso:	RUA Docencia

Recurso libre

22.

Applying QVT in order to implement secure data warehouses in SQL server analysis services
Blanco Bueno, Carlos - García Rodríguez de Guzmán, Ignacio - García Rosado, David - Fernández-Medina Patón, Eduardo - Trujillo Mondéjar, Juan Carlos

Formato:	info:eu-repo/semantics/article
Enlaces:	Data Warehouses manage historical information for the decision making process, and this information could be discovered by unauthorized users if security constraints are not established. It is therefore highly important for OLAP tools to consider the security rules defined at…
Fecha:	2012-03-08
Recurso:	RUA Docencia

Recurso libre

23.

Unsupported copper nanoparticles in the 1,3-dipolar cycloaddition of terminal alkynes and azides
Alonso Valdés, Francisco - Moglie, Yanina - Radivoy, Gabriel - Yus Astiz, Miguel

Formato:	info:eu-repo/semantics/article
Enlaces:	Readily prepared copper nanoparticles were found to catalyse the 1,3-dipolar cycloaddition of azides and alkynes up to rates comparable to those of microwave chemistry. Both the preparation of the nanoparticles and the click reaction are carried out under mild conditions,…
Fecha:	2010-04-19
Recurso:	RUA Docencia

Recurso libre

24.

Towards a functional description of cleft and reversed pseudo-cleft sentences in Alan Paton's play Sponono
Martínez Lirola, María

Formato:	info:eu-repo/semantics/article
Enlaces:	Mi intención es explicar cómo el texto crea significado con estructuras de sintaxis marcadas; pretendo observar el potencial de la lengua por medio del análisis desde una perspectiva funcional de dos estructuras anómalas en la lengua inglesa como son la…
Fecha:	2011-02-10
Recurso:	RUA Docencia

Recurso libre

25.

Near-field light distributions propagated from human corneas: determination of relevant patterns
Mas Candela, David - Pérez Rodríguez, Jorge - Vázquez Ferri, Carmen - Hernández Poveda, Consuelo - Illueca Contri, Carlos

Formato:	info:eu-repo/semantics/article
Enlaces:	A procedure to determine the best image range of distances that can be obtained from an aphakic eye is presented. Corneal surfaces are calculated from videokeratographic data. Light distributions at different distances inside the eye are calculated with a near-field…
Fecha:	2007-10-16
Recurso:	RUA Docencia

Recurso libre

26.

Evaluation of the electrocatalytic activity of antimony-doped tin dioxide anodes toward the oxidation of phenol in aqueous solutions
Montilla Jiménez, Francisco - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	Antimony-doped tin dioxide electrodes supported on titanium have been used in the electrochemical treatment of aqueous solution containing phenol. Ti/SnO2–Sb anode has high efficiency in the elimination of phenol, but its use is hindered by its short service life. The…
Fecha:	2007-11-21
Recurso:	RUA Docencia

Recurso libre

27.

Information systems outsourcing reasons in the largest Spanish firms
González Ramírez, María Reyes - Gascó Gascó, José Luis - Llopis Taverner, Juan

Formato:	info:eu-repo/semantics/article
Enlaces:	The aim of this paper is to explore the reasons that lead to information systems outsourcing in the largest Spanish firms. Our paper takes as its starting point the previous literature on information systems and tries to analyse if those…
Fecha:	2007-09-11
Recurso:	RUA Docencia

Recurso libre

28.

Melatonin inhibits nicotinic currents in cultured rat cerebellar granule neurons
Lax Zapata, Pedro

Formato:	info:eu-repo/semantics/article
Enlaces:	There is limited data regarding the effects of melatonin on the activity of neuronal acetylcholine receptors (nAChRs) themselves. This study analyzes the effects of low concentrations of melatonin on nicotine-evoked currents from cerebellar granule neurons (CGNs) in culture. Using electrophysiological…
Fecha:	2008-09-26
Recurso:	RUA Docencia

Recurso libre

29.

Study of redox mechanism of poly(o-aminophenol) using in situ techniques: evidence of two redox processes
Salavagione, Horacio Javier - Arias Pardilla, Joaquín - Pérez Martínez, José María - Vázquez Picó, José Luis - Morallón Núñez, Emilia - Miras, María Cristina - Barbero, César Alfredo

Formato:	info:eu-repo/semantics/article
Enlaces:	The poly(o-aminophenol) (POAP) redox process has been studied in aqueous acid solution using spectroscopic and optic in situ techniques. The redox transition of the POAP from its completely oxidized state to its completely reduced state occurs through two consecutive reactions…
Fecha:	2007-10-29
Recurso:	RUA Docencia

Recurso libre

30.

Electrochemical behaviour of conducting polymers obtained into clay-catalyst layers: an in situ Raman spectroscopy study
Boutaleb, Nadia - Benyoucef, Abdelghani - Salavagione, Horacio Javier - Belbachir, Mohammed - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	In this paper we present the study of the electrochemical properties of the following conducting polymers: poly(o-anisidine), polyaniline and copolymers of aniline and o-anisidine obtained by a new synthetic method. The polymers are synthesized in free-of-acid conditions, using an activated…
Fecha:	2007-10-26
Recurso:	RUA Docencia

Recurso libre

31.

Newton additive and multiplicative Schwarz iterative methods
Arnal García, Josep - Migallón Gomis, Violeta - Penadés Martínez, José - Szyld, Daniel B.

Formato:	info:eu-repo/semantics/preprint
Enlaces:	Convergence properties are presented for Newton additive and multiplicative Schwarz (AS and MS) iterative methods for the solution of nonlinear systems in several variables. These methods consist of approximate solutions of the linear Newton step using either AS or MS…
Fecha:	2007-10-03
Recurso:	RUA Docencia

Recurso libre

32.

Environmental strategies and their impact on hotel performance
Claver Cortés, Enrique - Molina Azorín, José Francisco - Pereira Moliner, Jorge - López Gamero, María Dolores

Formato:	info:eu-repo/semantics/article
Enlaces:	This study examines the relevance of environmental management as a source of competitive advantage for hotels. The relationship between the environmental proactivity of hotels located in the province of Alicante (Spain) and their economic performance levels was studied, and three…
Fecha:	2009-11-19
Recurso:	RUA Docencia

Recurso libre

33.

Evaluation of the effects produced by the construction and expansion of marinas on Posidonia oceanica (L.) Delile meadows
Fernández Torquemada, Yolanda - González Correa, José Miguel - Martínez Pérez, José Emilio - Sánchez Lizaso, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	New legislation in the Valencian Community (Decree 36/2002, 5th of March) has allowed the expansion of the existent marinas in this region of the SE of Spain, affecting in a significant way the Alicante province that possesses over thirty nautical…
Fecha:	2007-11-29
Recurso:	RUA Docencia

Recurso libre

34.

Olivocochlear efferent innervation of the organ of Corti in hypothyroid rats
Cantos Coll, Raquel - López García, Dolores Estilita - Merchán Cifuentes, Jaime - Rueda Puente, Joaquín

Formato:	info:eu-repo/semantics/article
Enlaces:	Congenital hypothyroidism induces developmental abnormalities in the auditory receptor, causing deafness due to a poor development of the outer hair cells (OHCs) and a lack of synaptogenesis between these cells and the olivocochlear axons. This efferent innervation is formed by…
Fecha:	2009-03-26
Recurso:	RUA Docencia

Recurso libre

35.

Description of two new species of Enclisis (Hymenoptera: Ichneumonidae) and support for the secretory role of tyloids in ichneumonid males
Bordera Sanjuán, Santiago - Hernández Rodríguez, Estefanía

Formato:	info:eu-repo/semantics/article
Enlaces:	Two new species of Enclisis Townes, 1970 from Spain are described and illustrated: E. dichroma sp. n. and E. schwarzi sp. n. The new species are distinguished from the closest species E. infernator and E. ornaticeps by head and leg…
Fecha:	2009-02-13
Recurso:	RUA Docencia

Recurso libre

36.

Corporate governance and organisational culture: the role of ethics officers
Llopis Taverner, Juan - González Ramírez, María Reyes - Gascó Gascó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	We argue that ethical leadership must be in line with corporate governance in general and of the Chief Executive Officer (CEO) who must be the starting point for the rest of the organisational members to have an ethical guideline to…
Fecha:	2009-01-26
Recurso:	RUA Docencia

Recurso libre

37.

Taxonomy of European Eristalinus (Diptera: Syrphidae) based on larval morphology and molecular data
Pérez Bañón, Celeste - Rojo Velasco, Santos - Ståhls, Gunilla - Marcos García, María Ángeles

Formato:	info:eu-repo/semantics/article
Enlaces:	The taxonomy of European Eristalinus syrphid flies is reviewed. New data on their life histories, biological notes and a key to species using pupal characters are provided. The larvae and puparia of Eristalinus taeniops (Wiedemann, 1818) and Eristalinus megacephalus (Rossi,…
Fecha:	2009-02-13
Recurso:	RUA Docencia

Recurso libre

38.

Effects of salinity on leaf growth and survival of the Mediterranean seagrass Posidonia oceanica (L.) Delile
Fernández Torquemada, Yolanda - Sánchez Lizaso, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	The main aim of this study was to estimate the effects of salinity variation on the Mediterranean seagrass Posidonia oceanica (L.) Delile and its attached epiphytes. Leaf growth and survival of this plant were tested in several short-term (15 days)…
Fecha:	2008-09-19
Recurso:	RUA Docencia

Recurso libre

39.

Business and management in China: a review of empirical research in leading international journals
Quer Ramón, Diego - Claver Cortés, Enrique - Rienda García, Laura

Formato:	info:eu-repo/semantics/article
Enlaces:	China’s growing economic importance has led to a significant increase in the volume of empirical research about business and management in this country during the last few years. This study reviews the 180 empirical papers focusing on the Chinese context…
Fecha:	2012-04-24
Recurso:	RUA Docencia

Recurso libre

40.

Complete algorithm for the calculation light patterns inside the ocular media
Pérez Rodríguez, Jorge - Mas Candela, David - Illueca Contri, Carlos - Miret Marí, Juan José - Vázquez Ferri, Carmen - Hernández Poveda, Consuelo

Formato:	info:eu-repo/semantics/article
Enlaces:	Realistic mathematical models are of great importance for studying the optical performance of the human eye. Light propagation algorithms provide robust methods to calculate field distributions inside a homogeneous medium, and thus they can be applied to the study of…
Fecha:	2007-10-08
Recurso:	RUA Docencia

Recurso libre

41.

Democratisation and health after the fall of the Wall
Álvarez-Dardet Díaz, Carlos - Franco Giraldo, Álvaro

Formato:	info:eu-repo/semantics/article
Enlaces:	Objectives: The fall of the Wall in 1989 can be seen as a natural experiment in the epidemiological sense to further examine the relation between democracy and health. Design and setting: Ecological study in the 23 post-communist countries, during the…
Fecha:	2007-11-21
Recurso:	RUA Docencia

Recurso libre

42.

High-efficiency volume holograms recording on acrylamide and N,N'methylene-bis-acrylamide photopolymer with pulsed laser
Gallego Rico, Sergi - Ortuño Sánchez, Manuel - García Llopis, Celia - Neipp López, Cristian - Beléndez Vázquez, Augusto - Pascual Villalobos, Inmaculada

Formato:	info:eu-repo/semantics/article
Enlaces:	In order to achieve a better understanding of the mechanisms of hologram formation and higher diffraction efficiencies in volume gratings stored in acrylamide based photopolymers, a crosslinker (N,N'methylene-bis-acrylamide) has been incorporated in the photopolymer to record holograms by pulsed laser…
Fecha:	2009-02-02
Recurso:	RUA Docencia

Recurso libre

43.

Effect of the glass substrate on the efficiency of the different orders that propagate in a transmission sinusoidal diffraction grating
Neipp López, Cristian - Sheridan, John T. - Márquez Ruiz, Andrés - Gallego Rico, Sergi - Ortuño Sánchez, Manuel - Beléndez Vázquez, Augusto - Pascual Villalobos, Inmaculada

Formato:	info:eu-repo/semantics/article
Enlaces:	In this work we study the effect of the glass substrate on the efficiencies of the different orders that propagate inside a transmission sinusoidal diffraction grating. Holographic optical elements are usually recorded on a photosensitive medium deposited on to a…
Fecha:	2009-02-02
Recurso:	RUA Docencia

Recurso libre

44.

Approximate analytical solutions for the relativistic oscillator using a linearized harmonic balance method
Beléndez Vázquez, Augusto - Méndez Alcaraz, David Israel - Álvarez López, Mariela Lázara - Pascual Villalobos, Carolina - Beléndez Vázquez, Tarsicio

Formato:	info:eu-repo/semantics/article
Enlaces:	The analytical approximate technique developed by Wu et al. for conservative oscillators with odd nonlinearity is used to construct approximate frequency-amplitude relations and periodic solutions to the relativistic oscillator. By combining Newton's method with the method of harmonic balance, analytical…
Fecha:	2009-03-11
Recurso:	RUA Docencia

Recurso libre

45.

Color visualization system for near-infrared multispectral images
Vilaseca Ricart, Meritxell - Pujol Ramo, Jaume - Arjona Carbonell, Montserrat - Martínez Verdú, Francisco Miguel

Formato:	info:eu-repo/semantics/article
Enlaces:	The aim of this study is to develop a color visualization system for multispectral images in the near-infrared region (NIR, 800–1000 nm). Samples with the same color or appearance in the visible region, which are therefore indistinguishable to the human
Fecha:	2007-09-11
Recurso:	RUA Docencia

Recurso libre

46.

Electrochemical regeneration of activated carbon saturated with toluene
García Otón, Miguel - Montilla Jiménez, Francisco - Lillo Ródenas, María Ángeles - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical regeneration of an activated carbon, previously saturated with toluene by gas phase adsorption, was studied. Cathodic and anodic regeneration methods were analyzed using a small batch electrochemical cell. In both cases, a stripping efﬁciency close to 100% was…
Fecha:	2007-10-29
Recurso:	RUA Docencia

Recurso libre

47.

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

48.

Effect of the intercalated cation on the properties of poly(o-methylaniline)/maghnite clay nanocomposites
Salavagione, Horacio Javier - Cazorla Amorós, Diego - Tidjane, Selma - Belbachir, Mohammed - Benyoucef, Abdelghani - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	A detailed study about the synthesis, characterization and properties of poly(o-methylaniline)(PoMea)/maghnite nanocomposites has been performed. Changes in the characteristics of the nanocomposites, depending on the intercalated cation between the clay layers before the synthesis, have been observed. Intercalated morphology has…
Fecha:	2008-09-30
Recurso:	RUA Docencia

Recurso libre

49.

Kinetic model of the decomposition of a PET fibre cloth in an inert and air environment
Moltó Berenguer, Julia - Font Montesinos, Rafael - Conesa Ferrer, Juan Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	The kinetics of the global thermal decomposition of a PET fibre cloth have been studied in three different atmospheres with nitrogen, 20 and 10% oxygen, using thermogravimetric analysis (TGA) between room temperature and 1050 K. Three different heating rates were…
Fecha:	2009-10-23
Recurso:	RUA Docencia

Recurso libre

50.

Post-buckling of a cantilever column: a more accurate linear analysis of a classical nonlinear problem
Beléndez Vázquez, Augusto - Hernández Prados, Antonio - Gallego Rico, Sergi - Ortuño Sánchez, Manuel - Neipp López, Cristian - Beléndez Vázquez, Tarsicio

Formato:	info:eu-repo/semantics/article
Enlaces:	A more accurate analytical approximate expression for the slope at any point of the elastic curve of a slender cantilever column is obtained by using a heuristic but pedagogical derivation. This derivation is based on the linearization of the nonlinear…
Fecha:	2009-03-10
Recurso:	RUA Docencia