Results 101 to 110 of about 63,080 (267)
Chemistry – A European Journal, EarlyView.The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve +4 more
wiley +1 more source
Ditched and walled enclosures in Prehistoric Iberia (4th-3rd millennia cal. BCE): Like oil and water
LucentumIberian Copper Age «ditched» and «walled» enclosure sites are often thought to represent two clearly distinguishable groups of sites. However, the discovery of sites where both ditches and walls are present («mixed sites») complicates things.
Víctor Jiménez-Jáimez +3 more
doaj +1 more source
Ampliación de la Unión Europea
, 2004 Procedimiento de Impresión: Huecograbado Papel: Estucado, engomado, fosforescente Tamaño del sello: 40,9 x 28,8 mm.(horizontales) Valor postal de los sellos: 0,52 €A partir del 1 de mayo de 2004, la Unión Europea (UE) se amplía con el ingreso de ...
Sociedad Estatal Correos y Telégrafos
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Versatile Palladium‐Catalyzed C‐H Arylation of Fluoroarenes with 2‐Chloropyridine Derivatives
Chemistry – A European Journal, EarlyView.Direct C─H arylation of fluoroarenes with 2‐chloropyridines is enabled by a simple Pd/SPhos system in isopropyl acetate. The method uses inexpensive reactants and shows broad scope and high yields. DFT computations explain reactivity and selectivity.
Federico Belnome +6 more
wiley +1 more source
La integración económica centroamericana: introducción al estudio de la unión aduanera y de las relaciones con la Unión Europea [PDF]
Este documento de trabajo se centra en el estudio de las características y desafíos del proceso de integración centroamericana y analiza la situación y las alternativas de la unión aduanera existente en la región. También aborda las relaciones exteriores
José A. Nieto Solís
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Chemistry – A European Journal, EarlyView.ABSTRACT The development of synthetic procedures for preparing metal nanoparticles with controlled size using sunlight opens new avenues toward more sustainable methods with lower energy consumption. Herein, we propose the use of double‐vacancy halide perovskites as precursors for engineering highly crystalline and small platinum nanoparticles (< 3 nm)
Kevin Mego +4 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.DFT calculations on porphyrin, corrin, and corphin complexes of cobalt, rhodium, iron, manganese, or nickel, and QM/MM calculations on enzyme models, explore the factors controlling the availably of super‐reduced metal(I) states. True metal(I) states are seen in corrin only for cobalt, in corphin only for nickel, and not at all in porphyrin.
Radu‐Ioan Onija +3 more
wiley +1 more source
¿Conoces la naturaleza en la Unión Europea?
, 2010 Ilustraciones de Horacio Diez Contreras.Dirigida a los más pequeños, esta publicación analiza muy brevemente la naturaleza de los distintos países de la Unión Europea.
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, 2018 El ISSN corresponde a la versión electrónica del documentoLa edición de la Semana Europea de las Regiones y Ciudades de este año, celebrada en Bruselas (Bélgica) entre el 9 y el 12 de octubre, resultó ser especialmente emocionante para algunos de los ...
Cuevas, José Manuel +1 more
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PharmVar GeneFocus: CYP1A2—Clinical Impact, Genetic Variation, and Updated Nomenclature
Clinical Pharmacology &Therapeutics, EarlyView.The Pharmacogene Variation Consortium (PharmVar) provides nomenclature for the highly polymorphic human CYP1A2 gene. CYP1A2 plays a crucial role in the biotransformation of several commonly used drugs, including antipsychotics, antidepressants, anxiolytics, and methylxanthines.
Katalin Monostory +13 more
wiley +1 more source