Results 71 to 80 of about 27,821 (244)

Fe‐Photocatalyzed Decarboxylative Giese‐Type Reaction of α‐N, O or S Carboxylic Acids: Insight into the Mechanism of the Radical Formation

open access: yesAdvanced Synthesis &Catalysis, Volume 367, Issue 21, November 13, 2025.
Electron‐deficient alkenes can be functionalized with α‐amino, α‐alkoxy and α‐alkylthio radicals formed by Fe‐photocatalyzed decarboxylation of the corresponding carboxylic acids. The reactions proceed under smooth ligandless conditions with inexpensive base and in the absence of oxidant. A mechanistic computational TD‐DFT study supports the occurrence
Fernando Pérez‐Maseda   +4 more
wiley   +1 more source

The LIOn's share: How the Liberal International Order Contributes to its Own Legitimacy Crisis. Harvard CES Open Forum Series2019-2020 [PDF]

open access: yes, 2020
The liberal international order (LIO) is experiencing a legitimacy crisis in its Western heartland. What causes this crisis? Existing approaches focus on the LIO’s unequal allocation of wealth and values that produces losers and thus breeds ...
Kreuder-Sonnen, Christian   +1 more
core  

Every Bit Hurts: Quantifiable Effects of Low‐Level Anthropogenic Disturbance on Movement, Habitat Selection, and Energetics of Blanding's Turtles (Emydoidea blandingii)

open access: yesEcology and Evolution, Volume 15, Issue 11, November 2025.
This study found that moderately low human disturbances, such as roads and nearby development, increased movement and energy expenditure in endangered Blanding's Turtles, potentially reducing their reproductive output. These findings suggest that even low‐level habitat disturbances may threaten population viability. Conservation efforts should focus on
Reta Lingrui Meng   +2 more
wiley   +1 more source

ORFEO Y SĀVITRĪ: VERSIONES DE UN PROTOMITO INDOEUROPEO EN LA TRADICIÓN CLÁSICA

open access: yesKáñina, 2013
Este trabajo consiste en un estudio del motivo del descensus ad inferos de Orfeo en el marco de la tradición clásica,para lo cual busca una nueva perspectiva en la India, cultura que parece tener muchas más respuestas para Occidentede lo que se podría ...
Roberto Morales Harley
doaj  

Vicent Blasco Ibáñez: antisemitisme entre tarongers

open access: yesDebats. Revista de cultura, poder i societat, 2018
El discurs de Blasco Ibáñez, en ocasions radical i polèmic, fortament anticlerical, va ser en determinats moments també obertament antisemita. Analitzem les claus de la judeofòbia en Blasco Ibáñez mitjançant l’estudi de l’evolució del prejudici antijueu ...
Orfeo Balboa
doaj   +1 more source

Clasicismo, estética, tradición: el "orfeo" de Juan de Jáuregui

open access: yes, 2016
Fecha de recepcion: 14 de agosto de 2014. Fecha de aceptacion: 30 de mayo de 2016.  In this article juan de Jauregui’s Orfeo is examined in the light of the prescriptive arguments he puts forward both in the Antidoto contra la pestilente poesia de las ...
J. Zepeda
semanticscholar   +1 more source

Versatile Photofunctionalization of Carbon Nanotubes via [4 + 2] Cycloaddition: A Facile Route to Hybrid Nanomaterials

open access: yesSmall Science, Volume 5, Issue 11, November 2025.
A [4 + 2] photocycloaddition of aryl cyclobutyl amines on carbon nanotubes is presented. A photocatalyst oxidizes the cyclic moiety to generate an active species trapped by the nanotube π‐cloud. The method functionalizes nanotubes of different characteristics and is tolerant to different functional groups decorating the amine.
Giacomo De Crescenzo   +4 more
wiley   +1 more source

Orfeo

open access: yes, 1947
Empresa: Juan Mestres ...
Annovazzi, Napoleone   +4 more
openaire   +1 more source

Orfeo como símbolo de la elocuencia y la civilización. Un estudio desde la emblemática

open access: yesCuadernos de Arte de la Universidad de Granada, 2008
En el siguiente trabajo se analiza la interpretación que se realizó del músico Orfeo como símbolo de la elocuencia y de la civilización durante el Renacimiento y el Barroco. Mediante el comentario de distintos emblemas y alegorías se señalan los orígenes
María Paz López-Peláez Casellas
doaj  

Impactos ENSO en cuencas atlánticas de Sudamérica [PDF]

open access: yes, 2013
Interannual changes in precipitation cause significant effects on the Pacific watersheds of South America. Large rivers flowing to the Atlantic Ocean as the Paraná and Uruguay are also influenced by ENSO-triggered floods causing significant impacts on ...
Isla, Federico Ignacio   +1 more
core  

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