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Elsevier |
Documentos disponibles de esta editorial (2214)
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Spatial resilience quantification can be a useful tool for land planning and management in agricultural systems to predict the appropriate control of disturbances such as pest infections. We proposed an index of spatial resilience based on lands[...]![]()
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We study the equilibrium dynamics of the relative phase in a superconducting Josephson link taking into account the quantum ?uctuations of the electromagnetic vacuum. The photons act as a superohmic heat bath on the relative Cooper pair number a[...]![]()
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Many stochastic systems, including biological applications, use Markov chains in which there is a set of absorbing states. It is then needed to consider analogs of the stationary distribution of an irreducible chain. In this context, quasi-stati[...]![]()
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An example of a Frechet space E is given such that the space of n-homogeneous continuous polynomials on E, endowed with any of the natural topologies usually considered on it, is quasinormable for every n is an element of N. This space has the p[...]![]()
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Thick laminar calcrete profiles are common on the surface of the eastern Canary Islands of Lanzarote and Fuerteventura. This paper reports the study of one profile from Lanzarote (Macher profile) and one from Fuerteventura (Tef|¨a profile). Thes[...]![]()
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The Quaternary sedimentary record of Sal Island includes marine and related aeolian and alluvial fan deposits. The substratum of the island is volcanic, with ages between 25 and 0.6 Ma. Quaternary marine units generally occur as raised marine te[...]![]()
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Soit E un fibre vectoriel stable sur l'espace projectif P'. Les droites de saut de E d'ordre donné, stratifient la variété des droites. On utilise un théorème de Porteous pour donner des informations numériques sur les strates. En particulier on[...]![]()
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We consider a queueing system where a customer who finds all channels busy must decide either to join the queue or to retry after an exponentially distributed time. The performance of the system can be approximated by using the RTA approximation[...]![]()
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España es uno de los países europeos con mayor prevalencia de enfermedad renal crónica, con una población de más de 4 millones de pacientes. De estos, se hallan en tratamiento sustitutivo renal 31.735 entre los programas de trasplante renal, diá[...]![]()
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We characterize the positive radial continuous and rotation invariant valuations V defined on the star bodies of Rn as the applications on star bodies which admit an integral representation with respect to the Lebesgue measure. That is,V(K)=?Sn?[...]![]()
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We show that a radial continuous valuation defined on the n-dimensional star bodies extends uniquely to a continuous valuation on the n-dimensional bounded star sets. Moreover, we provide an integral representation of every such valuation, in te[...]![]()
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We study in this paper the asymptotic behaviour of solutions of a nonlinear Fokker-Plank equation. Such an equation describes the evolution of radiation for a gas of photons, which interacts with electrons by means of Compton scattering and Brem[...]![]()
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Zazo Cardeña , Caridad ; Goy Goy, José Luis ; Hillaire-Marcel, Claude ; Guillot, Pierre-Yvot ; Soler Javaloyes, Vicente ; González Delgado, José Ángel ; Dabrio, Cristino J. ; Ghaleb, B. | Elsevier | 2002Systematic mapping and morphosedimentary analysis of Fuerteventura and Lanzarote Islands supported by laboratory techniques (U-series mostly by TIMS, 14C analysis and allo-isoleucine measurements on biogenic carbonates from raised marine deposit[...]![]()
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García Montero, María ; Rico del Viejo, Laura ; Llorens Quintana, Clara ; Lorente Velázquez, Amalia ; HernandezVerdejo, José Luis ; Madrid Costa, David | Elsevier | 2018-12-23Purpose: The aim of the current study is to assess, using new technologies, the interaction of four monthly silicone hydrogel contact lenses on the ocular surface and the comfort over 15 days of use. Methods: Prospective cross-over, randomized a[...]![]()
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García Montero, María ; Rico del Viejo, Laura ; Llorens Quintana, Clara ; Lorente Velázquez, Amalia ; Hernández Verdejo, José Luis ; Madrid Costa, David | Elsevier | 2018-12-23Purpose: The aim of the current study is to assess, using new technologies, the interaction of four monthly silicone hydrogel contact lenses on the ocular surface and the comfort over 15 days of use. Methods: Prospective cross-over, randomized a[...]![]()
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The study was designed to assess acceptability and side-effects of consumption of sacha inchi oil, rich in alpha-linolenic acid and sunflower oil, rich in linoleic acid, in adult human subjects. Thirty subjects received 10 or 15ml daily of sacha[...]![]()
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Pfeiffer, Norbert ; García Feijoo, Julián ; Martínez de la Casa, Jose Maria ; Larrosa Povés, José Manuel ; Fea, Antonio ; Lemij, Hans ; Gandolfi, Stefano ; Schwenn, Oliver ; Lorenz, Katrin ; Samuelson, Thomas W. | Elsevier | 2015-07Purpose: To assess the safety and effectiveness of the Hydrus Microstent (Ivantis, Inc, Irvine, CA) with concurrent cataract surgery (CS) for reducing intraocular pressure (IOP) in open-angle glaucoma (OAG). Design: Prospective, multicenter, ran[...]![]()
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Murad, M. H. ; Guyatt, G. H. ; Domecq, J. P. ; Vemooij, R. W. M. ; Erwin, P. J. ; Meerpohl, J. J. ; Prutsky, G. J. ; Akl, E. A. ; Mueller, K. ; Bassler, D. ; Schandelmaier, S. ; Walter, S. D. ; Busse, J. W. ; Kasenda, B. ; Pagano, G. ; Pardo-Hernandez, H. ; Montori, V. M. ; Wang, Z. ; Briel, M. | Elsevier | 2019-01-25T16:36:28ZObjective: We explored how investigators of ongoing or planned trials respond to the publication of a trial stopped early for benefit addressing a similar question. Study Design and Setting: We searched multiple databases from the date of public[...]![]()
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Martínez Cisuelo, V. ; Gómez, J. ; García Junceda, I. ; Naudi, Alba ; Cabré, R. ; Mota Martorell, N. ; López Torres, Mónica ; González Sánchez, Mónica ; Pamplona, R. ; Barja de Quiroga, Gustavo | Elsevier | 2016-10Rapamycin consistently increases longevity in mice although the mechanism of action of this drug is unknown. In the present investigation we studied the effect of rapamycin on mitochondrial oxidative stress at the same dose that is known to incr[...]![]()
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Aranbarri, Josu ; González Sampériz, Penélope ; Moreno, Ana ; Valero-Garcés, Blas ; Moreno, Ana ; Gil-Romera, Graciela ; Sevilla-Callejo, Miguel ; García-Prieto, Eduardo ; Di Rita, Federico ; Mata, M. Pilar ; Morellón, Mario ; Magri, Donatella ; Rodríguez-Lázaro, Julio ; Carrión, José S. | Elsevier | 2014Palynological, sedimentological and geochemical analyses performed on the Villarquemado paleolake sequence (987 m a.s.l, 40°30?N; 1°18?W) reveal the vegetation dynamics and climate variability in continental Iberia over the last 13,500 cal yr BP[...]![]()
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Glass, Roger I. ; García, Patricia J. ; Belter, Christopher W. ; Livinski, Alicia A. ; Leon-Velarde, Fabiola | Elsevier | 2018-12-03T17:02:46Z![]()
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Poor vision in low light is a common complaint of elderly people. This poorly understood phenomenon is likely to involve both receptoral and post receptoral mechanisms. We investigated the recovery of contrast thresholds for sine-wave gratings o[...]![]()
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Esteban Fernández de Ávila, Berta ; Zhao, Mingjiao ; Campuzano, Susana ; Ricci, Francesco ; Pingarrón Carrazón, José Manuel ; Mascini, Marcelo ; Wang, Joseph | Elsevier | 2017-05-15A dynamic micromotor-based immunoassay, exemplified by cortisol detection, based on the use of tubular micromotors functionalized with a specific antibody is described. The use of antibody-functionalized micromotors offers huge acceleration of b[...]![]()
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In this paper we obtain the rates of convergence of the algorithms given in [13] and [14] for an automatic computation of the centered Hausdorff and packing measures of a totally disconnected self-similar set. We evaluate these rates empirically[...]![]()
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Díez Fernández, Rubén ; Rubio Pascual, Francisco J. ; Martín Parra, Luis Miguel | Elsevier | 2019-03This contribution discusses about the rheological, kinematic and dynamic frameworks necessary to produce recumbent and upright folds from syn-orogenic granitic massifs that were formed during an early stage of magma genesis related to the onset [...]![]()
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In this paper we present results of a study of the crystallisation behaviour of the dolomite-analogues norsethite and PbMg (CO3)2 at room temperature and atmospheric pressure. Whereas precipitation of norsethite was previously obtained by mixing[...]![]()
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Casado González, Miguel Ángel ; Ciriano, Miguel A. ; Lahoz, Fernando J. ; Oro, Luis A. ; Pérez Torrente, Jesús J. | Elsevier | 2016-06-15Treatment of heterobimetallic sulfido-bridged complexes [Cp(acac)Ti(m3-S)2{M(cod)}2] (M ¼ Rh (1), Ir(2)) with the organic acids CX3COOH (X ¼ F, H) forms the corresponding acetate derivatives [Cp(CX3COO)Ti(m3-S)2{M(cod)}2] (X ¼ F, M ¼ Rh (3), Ir [...]![]()
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There have been quite a few proposals for behavioural equivalences for concurrent processes, and many of them are presented in Van Glabbeek’s linear time-branching time spectrum. Since their original definitions are based on rather different ide[...]![]()
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Let X be a separable Banach space with a separating polynomial. We show that there exists C > = 1 (depending only on X) such that for every Lipschitz function f : X -> R, and every epsilon > 0, there exists a Lipschitz, real analytic function [...]![]()
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We investigate the behaviour by general J- and K-methods of certain closed operator ideals. In particular, the results apply to weakly compact operators, Rosenthal operators and Banach–Saks operators.![]()
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We prove that if T: A0 ? B0 is compact and T: A1 ? B1 is compact (or T: A1 ? B1 is bounded and, then given any ? and q with 0![]()
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We study real algebraic plane curves, at an elementary level, using as little algebra as possible. Both cases, affine and projective, are addressed. A real curve is infinite, finite or empty according to the fact that a minimal polynomial for th[...]![]()
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This paper provides an elementary exposition of affine and projective real plane curves. Where possible, elementary proofs are given, but to some extent, one must make use of results from algebraic geometry (over the complex numbers) and real al[...]![]()
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The main goal of this paper is to prove that for each n > 2, every sequence of integers satisfying Dold’s congruences is realized as the sequence of fixed point indices of the iterates of an orientation preserving Rn-homeomorphism at an isolate[...]![]()
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Lomoschitz, Alejandro ; Sanchez Marco, Antonio ; Huertas Coronel, María José ; Betancort, Juan F. ; Arnau, Isern ; Sanz, Elena ; Meco, Joaquín | Elsevier | 2016-11The Famara massif, in the north of Lanzarote Island, constitutes the remains of a former island inhabited by the oldest known vertebrate fauna of the Canary archipelago off the coast of Africa. In this study, new ages are offered for the underly[...]![]()
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Dry eye syndrome is a common tears and ocular surface multifactorial disease, described by changes in the ocular surface epithelia related to reduced tears quantity and ocular surface sensitivity, leading to inflammatory reaction. Managing the e[...]![]()
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Reductive acetylation of the lipoyl domain (E2plip) of the dihydrolipoyl acetyltransferase component of the pyruvate dehydrogenase multienzyme complex of Escherichia coli is catalysed specifically by its partner pyruvate decarboxylase (E1p), and[...]![]()
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Karátson, D. ; Yepes, J. ; Favalli, M. ; Rodríguez-Peces, Martin Jesús ; Fornaciai, A. | Elsevier | 2016-01Original volcanic edifices of two successive stages of Gran Canaria are reconstructed using a geomorphometric analysis of existent or restored paleosurfaces. In the reconstruction, surface fitting was applied preferably to planèzes (i.e. triangu[...]![]()
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Independent component analysis (ICA) has been proven useful for suppression of artifacts in EEG recordings. It involves separation of measured signals into statistically independent components or sources, followed by rejection of those deemed ar[...]![]()
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This work studies the evolution of IGCC slag grains within a ceramic matrix fired at different temperatures to investigate the effect of using IGCC slag as a degreaser. Pressed ceramic specimens from two clay mixtures are used in this study. The[...]![]()
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Residency at high altitude (HA) demands adaptation to challenging environmental conditions with hypobaric hypoxia being the most important one. Epidemiological and experimental data suggest that chronic exposure to HA reduces cancer mortality an[...]![]()
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Organized tours to watch wildlife are popular recreational and educational activities, in which the visitor expectative (to observe as many and as diverse animals as possible) runs parallel to conservation purposes. However, the presence of visi[...]![]()
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Ferrater, Marta ; Ortuño, María ; Masana, Eulàlia ; Pallàs, Raimon ; Perea Manea, Hector ; Baize, Stephane ; García Meléndez, Eduardo ; Martínez Díaz, José J. ; Echeverria, Anna ; Rockwell, Thomas K. ; Sharp, Warren D. ; Medialdea, Alicia ; Rhodes, Edward J. | Elsevier | 2016-06hree-dimensional paleoseismology in strike-slip faults with slip rates less than 1 mm per year involves a greatmethodological challenge. We adapted 3D trenching to track buried channels offset by the Alhama de Murciaseismogenic left-lateral stri[...]![]()
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Román-Dañobeytia, F. ; Huayllani, M. ; Michi, A. ; Ibarra, F. ; Loayza-Muro, R. ; Vázquez, T. ; Rodríguez, L. ; García, M. | Elsevier | 2019-02-22T14:55:02ZGlobal demand for gold has led to a massive increase in mining activity around the world. During the last decade, gold mining grew significantly in the Amazon becoming a major driver for land degradation and heavy metal contamination. However, f[...]![]()
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Understanding how fossil assemblages were formed and which species modified the bones recovered in archaeological sites is no easy task. Nevertheless, during recent decades taphonomists have been working on the study of living carnivores in orde[...]![]()
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Egea-González, Isabel ; Jiménez Díaz, Alberto ; Parro, Laura M. ; Mansilla, Federico ; Holmes, James A. ; Lewis, Stephen R. ; Patel, Manish R. ; Ruiz Pérez, Javier | Elsevier | 2019Elysium Planitia and Oxia Planum are plains located near the Martian dichotomy. Lately, both regions have been extensively analyzed due to the major role that they play in the InSight and ExoMars missions. InSight landed in Elysium Planitia and [...]![]()
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Lazo-Porras, Maria ; Bernabé-Ortiz, Antonio ; Ruiz-Alejos, Andrea ; Smeeth, Liam ; Gilman, Robert H. ; Checkley, William ; Malaga, German ; Jaime Miranda, J. | Elsevier | 2019-12-06T21:04:48ZAIMS: This study aimed (1) to estimate the prevalence of prediabetes according to different definitions, (2) to evaluate regression to normal glucose levels and progression towards T2DM, and (3) to determine factors associated with regression an[...]![]()
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Lazo-Porras, Maria ; Bernabé-Ortiz, Antonio ; Ruiz-Alejos, Andrea ; Smeeth, Liam ; Gilman, Robert H. ; Checkley, William ; Malaga, German ; Miranda, J. Jaime | Elsevier | 2020-07-14T00:02:30ZAIMS: This study aimed to (1) estimate the prevalence of prediabetes according to different definitions, (2) evaluate regression to normal glucose levels and progression towards T2DM, and (3) determine factors associated with regression and prog[...]![]()
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We study the regularity of the solution to the Reynolds equation for incompressible and compressible fluids when the gap between the lubricated surfaces, “h(x,y)”, presents a discontinuity in a two-dimensional bounded domain. As in the one-dimen[...]![]()
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Diego García, Laura de ; Ramírez Escudero, Mercedes ; Sebastián Serrano, Álvaro ; Díaz Hernández, Juan Ignacio ; Pintor, Jesús ; Lucas Lozano, José J. ; Díaz Hernández, Miguel | Elsevier | 2017-01The Ubiquitin-Proteasome System (UPS) is essential for the regulation of the cellular proteostasis. Indeed, it has been postulated that an UPS dysregulation is the common mechanism that underlies several neurological disorders. Considering that [...]