Results 41 to 50 of about 38,569 (201)

República y exilio español en el fin del mundo. Valparaíso, Chile

open access: yesRevista de Indias, 2009
En este artículo nos interesa mostrar las repercusiones que tuvo la experiencia republicana española en la colectividad migrante, de esa nacionalidad, en Valparaíso (Chile).
Baldomero Estrada Turra
doaj   +1 more source

Lewis‐Acidic Properties and Catalytic Behavior of Hydroboration‐ and Diolysis‐Derived NHC‐Stabilized Borenium Cations

open access: yesChemistry – A European Journal, EarlyView.
A series of thirteen (N‐heterocyclic carbene) NHC‐stabilized borenium cations is synthesized from NHC→BH3 complexes via hydroboration and condensation with diols. The novel compounds are fully characterized. Eight crystal structures are presented. Kinetic and NMR data show how the structural features translate to catalytic activity in hydrosilylation ...
Michał Jakubczyk   +4 more
wiley   +1 more source

Voluntades (des)encontradas: las máscaras de la representación en la teoría política de Jean-Jacques Rousseau

open access: yesDaimon, 2009
Si bien es cierto que la aparición de la representación política se ha ligado con un cauce histórico particularmente fértil para el sobrevenir del liberalismo, no lo es menos que los efectos políticos e históricos que se desprenden de aquella pueden ser
Ana Paula Penchaszadeh, Mauro Spagnolo
doaj  

Organelle‐Resolved Tetrazine‐trans‐Cyclooctene Click Chemistry for Cargo Delivery and Release

open access: yesChemistry – A European Journal, EarlyView.
Bioorthogonal click chemistry tools provide a means for specific intracellular conjugation of molecules. In this study, we used reactive tetrazine (Tz) and TCO moieties for labeling of organelles and organelle‐specific delivery and activation of doxorubicin prodrugs.
Oleh Durydivka   +6 more
wiley   +1 more source

Entre el Héroe nacional-Padre de la Patria y el Anti-héroe nacional-padrote de la Patria

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2007
El artículo esboza el culto heroico venezolano a partir de algunos de sus trazos literarios e historiográficos. El argumento se ilustra con las grandes líneas de desarrollo de una sociedad que parece haberse destinado a desenvolverse, de manera ...
Germán Carrera Damas
doaj   +1 more source

Peptide Marriages: Modular Assembly of Multi‐Agonist Therapeutics

open access: yesChemistry – A European Journal, EarlyView.
A modular polyethylene glycol (PEG) scaffold enables rapid assembly of dual peptide agonists using strain‐promoted azide–alkyne cycloaddition (SPAAC) and copper‐catalysed azide–alkyne cycloaddition (CuAAC). Glucagon‐like peptide‐1 (GLP‐1) and amylin agonists were combined with controlled valency, yielding low‐picomolar activity and receptor‐selective ...
Kristina A. Kostadinova   +11 more
wiley   +1 more source

Huellas y usos de la Ciudad de Dios en el Tractado de república de Alonso de Castrillo (1521)

open access: yesCriticón, 2013
This works aims to study the presence in the Tractado de república published in Burgos by Alonso de Castrillo (in the context of the revolt of the Comunidades of Castile) of many quotations and extracts from the The City of God.
Alexandra Merle
doaj   +1 more source

Mild C─F Activation of Azido(per)Fluoroalkanes

open access: yesChemistry – A European Journal, EarlyView.
Mild and selective activation of C(sp3)–F bonds in azido(per)fluoroalkanes using thiolates was developed, leading to novel functionalized azides. The reaction is initiated by nucleophilic attack of the sulfur atom to the terminal nitrogen of the azido group, followed by fluoride ion elimination.
Olena Shaitanova   +7 more
wiley   +1 more source

Alfonso XIII and Manuel II: two faces of the same coin in the Portuguese republican discourse (1908-1910)

open access: yesPasado y Memoria, 2019
The reign of D. Manuel II (1908-1910) was characterized by the intense activity of political propaganda, with the aim of making known the new king and simultaneously stabilizing the kingdom following the Regicide of February 1, 1908.
Teresa Nunes
doaj   +1 more source

Raman Optical Activity as a Tool to Monitor Polynucleotide Conformation in Solutions

open access: yesChemistry – A European Journal, EarlyView.
Raman optical activity (ROA) studies of nucleic acids have been hindered by limited computational tools to link the spectra to the structure. The study shows that accurate density functional simulations are possible for model nucleotides, bringing more information about molecular geometry and dynamics in solutions.
Mohammed Siddhique Para Kkadan   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy