Results 11 to 20 of about 76,812 (158)

Three‐Step One‐Pot Photocatalytic Oxidation of Feedstocks and Organocatalytic Sequential Cascade to Access Enantioenriched α‐Aminonitriles [PDF]

ChemSusChem, Volume 18, Issue 20, October 23, 2025.
A one‐pot, three‐step cascade from simple feedstocks to chiral building blocks is reported. By merging organic photocatalysis and noncovalent organocatalysis, benzylic substrates are transformed into enantioenriched α‐aminonitriles via CH photooxidation, imine formation, and asymmetric Strecker reaction. The method affords good yields, up to 96:4 e.r.,
Stefania Perulli, Sandra Ardevines, Sara Malagón, Gaukhar Khassenova, Timo Hülße, Eugenia Marqués‐López, Raquel P. Herrera, Olga García Mancheño   +7 more
wiley   +2 more sources

Recovering European River Invertebrate Communities Homogenize or Differentiate Depending on Anthropogenic Stress [PDF]

Global Change Biology, Volume 32, Issue 1, January 2026.
(a) European river invertebrate communities showed an average increase in local richness over time (1994–2023), indicating partial local recovery following the alleviation of anthropogenic stress (e.g., point‐source pollution). However, this local recovery was not accompanied by increases in β‐diversity, likely due to persistent, unaddressed stressors,
Daniela Cortés‐Guzmán, Diana E. Bowler, Marie Anne Eurie Forio, Peter Goethals, Ioannis Karaouzas, Ariane Moulinec, James S. Sinclair, Rudy Vannevel, Peter Haase, Ellen A. R. Welti   +9 more
wiley   +2 more sources

Editorial: Reviews in experimental pharmacology and drug discovery 2023: pharmacological management of non-communicable diseases [PDF]

Frontiers in Pharmacology
Ali Sharif, Virginia Flores-Morales, Hanan Farouk Aly   +2 more
doaj   +2 more sources

Sistema de auriculares en teleoperadores: estudio en una central de llamadas del sur de España

Medicina y Seguridad del Trabajo, 2020
Resumen Introducción: El personal teleoperador de las centrales de llamadas telefónicas, está sometido a ruido ambiental y al nivel sonoro de los auriculares con el posible desarrollo de pérdida auditiva.
Concepción Flores Muñoz, Francisco de Asís Manchado López, Antonio Ranchal Sánchez   +2 more
doaj   +1 more source

Enantioselective C−P Bond Formation through C(sp3)−H Functionalization

Advanced Synthesis &Catalysis, Volume 365, Issue 13, Page 2152-2158, July 4, 2023., 2023
Abstract An enantioselective C−P bond formation has been developed through a C(sp3)−H activation in an oxidation step followed by an organocatalyzed hydrophosphonylation protocol. The asymmetric organocatalytic Pudovik reaction has been achieved following a one‐pot strategy, starting from different benzylic and allylic alcohols and dibenzyl phosphite ...
Sandra Ardevines, Devan Horn, Juan V. Alegre‐Requena, Marta González‐Jiménez, M. Concepción Gimeno, Eugenia Marqués‐López, Raquel P. Herrera   +6 more
wiley   +1 more source

Crecimiento económico, información asimétrica en mercados financieros y microcréditos

Economía, Sociedad y Territorio, 2007
Se presenta un artículo teórico respecto a la relación existente entre desarrollo de instituciones financieras, reducción de la información asimétrica y su impacto en el crecimiento económico.
HORACIO ESQUIVEL-MARTÍNEZ, ULISES HERNÁNDEZ-RAMOS   +1 more
doaj   +3 more sources

Fine-scale population structure and asymmetrical dispersal in an obligate salt-marsh passerine, the Saltmarsh Sparrow (Ammodramus Caudacutus) [PDF]

, 2012
Understanding the spatial scale of gene flow can yield valuable insight into the ecology of an organism and guide conservation strategies. Fine-scale genetic structure is uncommon in migratory passerines because of their high vagility and presumed high ...
Babbitt, Kimberly J., Kovach, Adrienne I., O\u27Brien, Kathleen M., Walsh, Jennifer   +3 more
core   +2 more sources

The aminoindanol core as a key scaffold in bifunctional organocatalysts

Beilstein Journal of Organic Chemistry, 2016
The 1,2-aminoindanol scaffold has been found to be very efficient, enhancing the enantioselectivity when present in organocatalysts. This may be explained by its ability to induce a bifunctional activation of the substrates involved in the reaction. Thus,
Isaac G. Sonsona, Eugenia Marqués-López, Raquel P. Herrera   +2 more
doaj   +1 more source

Logística militar en los conflictos del siglo XXI. El espacio y los retos ofrecidos por la guerra asimétrica

Revista Científica General José María Córdova, 2011
La guerra asimétrica se presenta como la innovación característica de la mayoría de conflictos del sistema internacional posterior a la Guerra Fría, incrementados por el sistema internacional anti terrorista posterior al 11 de septiembre.
Juan Ricardo Sánchez Hurtado, Luis Alexander Montero Moncada, Carlos Alberto Ardila Castro, Antonio José Ussa Cabrera   +3 more
doaj   +1 more source

Comportamiento mecánico ante la sobrexpansión de stents de cromo-cobalto comparados con stents de acero inoxidable, implantados en la aorta abdominal de conejos hipercolesterolémicos [PDF]

, 2018
Introducción: La fisiopatología de la disfunción diastólica del ventrículo izquierdo incluye alteraciones de la relajación ventricular, rigidez elástica pasiva o una combinación de ambos mecanismos.
Berrocal, Daniel, Fernandez, Alejandro, Gelpi, Ricardo Jorge, Mele, Esteban, Olmedo, Daniel Gustavo, Renou, Sandra Judith   +5 more
core   +1 more source