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Elsevier |
Documentos disponibles de esta editorial (2214)
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Introduction Recent improvements in alloys, kinematics, and concepts have been combined to increase the cyclic fatigue resistance of nickel-titanium (NiTi) instruments. The aim of this study was to compare the cyclic fatigue resistance of new M-[...]![]()
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Pérez-Higueras, Juan José ; Arias Paniagua, Ana María ; Macorra García, José Carlos de la ; Peters, Ove A. | Elsevier | 2014Introduction: New designs and alloys have been developed toincrease cyclic fatigue (CF) resistance of rotary files. the aim of this study was to compare CF resistance of ProTaper Universal (PTU) ; Dentsply Tulsa Dental, Tulsa, OK) and ProTaper N[...]![]()
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Chetty-Mhlanga, Shala ; Fuhrimann, Samuel ; Eeftens, Marloes ; Basera, Wisdom ; Hartinger, Stella ; Dalvie, Mohamed Aqiel ; Röösli, Martin | Elsevier | 2020-07-14T00:01:03ZBACKGROUND: Electronic media use is increasing in low- and middle-income countries, thus we aim to investigate the prevalence of different aspects of e-media use and its association to symptoms and neurocognitive outcomes in rural South Africa. [...]![]()
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Kubitschek-Barreira, Paula H. ; Curty, Nathalia ; Neves, Gabriela W. P. ; Gil, Concha ; Lopes-Bezerra, Leila M. | Elsevier | 2013-01Aspergillus fumigatus is the main etiological agent of invasive aspergillosis, an important opportunistic infection for neutropenic patients. The main risk groups are patients with acute leukemia and bone marrow transplantation recipients. The l[...]![]()
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This paper deals with the geological and geochemical characterization of ironstone deposits encountered in two different sedimentary successions (upper Cretaceous and lower Cenozoic) in northern Bahariya, Egypt. The ironstones occur as uneconomi[...]![]()
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Alda, Javier ; Rico García, José María ; Salgado Remacha, Francisco Javier ; Sánchez Brea, Luis Miguel | Elsevier | 2009-06-14We analyze the optical behavior of square Fresnel zones plates. A theoretical analysis and numerical simulations based on the Rayleigh-Sommerfeld approach have been developed analyzing properties such as the depth of focus and the intensity of t[...]![]()
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The discovery of a dinosaur clutch in Upper Cretaceous tidal flat deposits in the Tremp Formation in Biscarri, Isona (Lleida, Spain), provides insight into the mode of life of some dinosaurs. The clutch occurs in grey marls that were originally [...]![]()
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Hernando Grande, Antonio ; Garcia, M.A. ; Gálvez Alonso, Fernando ; Guinea, F. | Elsevier | 2020-04-15It is shown that magnetic forces as the force -/+ mu(V) over barB, exerted on electron spins at rest, account for both the transverse spin imbalance typical of spin Hall effect and the transverse charge imbalance associated with pure spin curren[...]![]()
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The direct correlation function of a Huid of aligned planar hard convex orientable bodies is determined exactly using a simple form for the separation of the centers at contact. An approximate analytical proposal for the direct correlation funct[...]![]()
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Campano, Cristina ; Miranda, Rubén ; Merayo, Noemí ; Negro, Carlos ; Blanco, Ángeles | Elsevier | 2017-05-17Cellulose nanocrystals (CNC) are high added value products which can be used in many applications. In this research, CNC were directly produced from two recycled papers: old newspapers (ONP) and 100% recycled newsprint (NP). CNC were also obtain[...]![]()
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Studies assume that socioeconomic status determines individuals’ states of health, but how does health determine socioeconomic status? And how does this association vary depending on contextual differences? To answer this question, our study use[...]![]()
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Generalist pathogens are capable of infecting a wide range of host species, and may pose serious disease emergence threats if accidentally moved outside their native areas. To date little effort has been devoted to identifying geographic areas t[...]![]()
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Sequences of discrete Levy and adjoint Levy transformations for multidimensional quadrilateral lattices are studied. After a suitable number of iterations we show how all the relevant geometrical features of the transformed quadrilateral lattice[...]![]()
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Taenia solium (the pork tapeworm) is present in most developing countries, where it is a frequent cause of seizures and other neurological disease. Parasitic larvae invade the human brain, establish, and eventually resolve, leaving a calcified s[...]![]()
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This paper complements previous estimations regarding socioeconomic inequalities in obesity for Spanish adults, and provides new evidence about the mechanisms through which socioeconomic status (SES) affects obesity. Microdata from the Spanish N[...]![]()
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We study several properties of disjointly homogeneous Banach lattices with a special focus on two questions: the self-duality of this class and the existence of disjoint sequences spanning complemented subspaces. Various results around these pro[...]![]()
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Puell Marín, María Cinta ; Pérez Carrasco, María Jesús ; Hurtado-Ceña, Francisco Javier ; Álvarez-Rementería Fernández, Laureano | Elsevier | 2015-11PURPOSE: To compare disk halo size in response to a glare source in eyes with an aspheric apodized diffractive multifocal intraocular lens (IOL) or aspheric monofocal IOL. SETTING: Rementeria Ophthalmological Clinic, Madrid, Spain. DESIGN: Pro[...]![]()
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Discrete models of dislocations in cubic crystal lattices having one or two atoms per unit cell are proposed. These models have the standard linear anisotropic elasticity as their continuum limit and their main ingredients are the elastic stiffn[...]![]()
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Arriaga, Laura R. ; Rodríguez García, Ruddi ; Moleiro, Lara H. ; Prévost, Sylvain ; López-Montero, Iván ; Hellweg, Thomas ; Monroy Muñoz, Francisco | Elsevier | 2017Cholesterol is an intriguing component of fluid lipid membranes: It makes them stiffer but also more fluid. Despite the enormous biological significance of this complex dynamical behavior, which blends aspects of membrane elasticity with viscous[...]![]()
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It is known that the concept of dissipativeness is fundamental for understanding the asymptotic behavior of solutions to evolutionary problems. In this paper we investigate the dissipative mechanism for some semilinear fourth-order parabolic equ[...]![]()
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We characterize several classes of subsets in the ?-sum (?En)? of a sequence (En) of Banach spaces (where A is a Banach sequence ideal space), in terms of the corresponding classes in the spaces En. Several stability results are obtained.![]()
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Fernández García, Rosa Mª ; Novo Rodríguez, Marta ; Marchán, Daniel F. ; Díaz Cosín, Darío J. | Elsevier | 2016-01Comparative phylogeography of widespread species that span the same geographic areas can elucidate the influence of historical events on current patterns of biodiversity, identify patterns of co-vicariance, and therefore aid the understanding of[...]![]()
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Roldán López, Nuria ; Pérez Gil, Jesús ; Morrow, Michael R. ; García Álvarez, Begoña | Elsevier | 2017-08-22Lung surfactant (LS) is an essential system supporting the respiratory function. Cholesterol can be deleterious for LS function, a condition that is reversed by the presence of the lipopeptide SP-C. In this work, the structure of LS-mimicking me[...]