Results 51 to 60 of about 840,872 (167)

Different Patterns of Pd-Promoted C-H Bond Activation in (Z)-4-Hetarylidene-5(4H)-oxazolones and Consequences in Photophysical Properties

open access: yesInorganics
This work aims to amplify the fluorescence of (Z)-4-hetarylidene-5(4H)-oxazolones 1 by suppression of the hula-twist non-radiative deactivation pathway by C^N-orthopalladation of the 4-hetarylidene ring.
Miguel Martínez   +6 more
doaj   +1 more source

The retrieval of moving images at Spanish film archives: the oversight of content analysis [PDF]

open access: yes, 2016
In the field of library and information science, content analysis is a crucial task for an effective retrieval of information by users at an archive. In this research, we analyse the current state of this task and the possibilities of retrieval of film ...
Domínguez-Delgado, Rubén   +1 more
core   +1 more source

Phytochemical diversity of naturally regenerated plants in a biodiversity enrichment experiment

open access: yesJournal of Ecology, Volume 114, Issue 3, March 2026.
Tree islands established within an industrial oil palm plantation promoted the recovery of phytochemical diversity through natural regeneration. Ten years after planting, untargeted metabolomics of 76 regenerating woody species detected 27,122 phytochemical features, including many novel compounds. Larger islands supported higher woody species richness
Vannesa Montoya‐Sánchez   +8 more
wiley   +1 more source

Effect of the synthesis method and praseodymium on the electrical properties of Mg-Cubic Zirconia

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 1999
The synthesis of nanostructured Mg-FSZ fully stabized zirconia by chemical methods such as colloidal gel, polyester resin and hydrolisis of alkoxides has been studied.
Badenes, J.   +6 more
doaj  

Jaime Ibáñez Quintana [ Fundamentos didácticos de la lengua y la literatura] [PDF]

open access: yes, 2016
Es una reseña de la obra: López Valero, A. y Encabo Fernández, E. Fundamentos didácticos de la lengua y la literatura. Editorial Síntesis, Madrid, 2016, 2ª edición revisada y actualizada. 229 páginas.
Ibáñez Quintana, Jaime
core   +1 more source

Assessing contributions of deterministic versus stochastic processes to local species assembly: A field experiment with annual plant‐dominated communities in gypsum systems

open access: yesJournal of Ecology, Volume 114, Issue 3, March 2026.
In this study, we experimentally show that stochasticity can play prominent roles in driving local species assembly in annual plant‐dominated communities of semiarid gypsum ecosystems. Drylands are traditionally viewed as restrictive environments that impose strong deterministic filtering effects, but neutral events can also contribute decisively to ...
Laura Ortiz   +3 more
wiley   +1 more source

Instrumentalisierung der geschichtlichen Ereignisse. Eine Domäne der deutschen Konservativen?

open access: yesRevista de Filología Alemana, 2004
Este análisis describe el desarollo del conservadurismo alemán. Hace destacar que los conservadores tienen una tendencia a acumular los acontecimientos históricos importantes y usarlos a su beneficio.
Alesv Urválek
doaj  

La idea unitaria del hombre en el De hominis opificio de Gregorio de Nisa [PDF]

open access: yes, 2016
El De hominis opificio de Gregorio de Nisa es considerado el primer tratado de antropología cristiana, en el que se lleva a cabo una síntesis entre la antropología bíblica, la filosofía griega y la visión del hombre propia de las ciencias naturales ...
García-Cuadrado, J.A. (José Ángel)
core   +1 more source

From Light‐Driven to Dark Synthesis: Streamlining Perfluoroalkyl Selenide Ether Formation

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 5, 7 February 2026.
Two orthogonal and user‐friendly protocols enable the efficient construction of (Se/S)RF bonds from simple dichalcogenides and perfluoroalkyl iodides. Visible‐light irradiation at 395 nm promotes seleno‐ and thioether formation, while a dark KOH/MeCN variant delivers selenoethers in minutes. Both approaches operate under mild, metal‐ and photocatalyst‐
Loydel Torres Barroso   +5 more
wiley   +1 more source

Acts or events? A perspective from the marketing mix [PDF]

open access: yes, 2018
La literatura existente en torno a las relaciones píublicas, el ceremonial y el protocolo alterna como sinónimos los términos actos y eventos. A través de una revisión teóricoconceptual, el principal objetivo de este trabajo es demostrar que ambos ...
Pulido Polo, Marta
core  

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