Results 11 to 20 of about 8,189 (212)

Photochemical Rearrangements of Pyridine N-Oxides: Pathways to Oxaziridine Derivatives [PDF]

Molecules
The photochemical behavior of substituted pyridine N-Oxides is characterized by complex rearrangements culminating in the formation of valuable photoproducts.
Cristian J. Guerra, Yeray A. Rodríguez-Núñez, Efraín Polo-Cuadrado, Mitchell Bacho, Jorge Soto-Delgado, Victor B. Fuentes-Guerrero, Eduardo I. Torres-Olguín, Cristopher A. Fica-Cornejo, Daniela Rodríguez-García, Manuel E. Taborda-Martínez, Leandro Ayarde-Henríquez, Adolfo E. Ensuncho   +11 more
doaj   +2 more sources

Índice de reactividad intrínseco de carbones concentrados ricos en vitrinita [PDF]

Ingeniería e Investigación, 2007
En este trabajo se definió un nuevo parámetro de reactividad de carbón a la combustión llamado índice de reactividad intrínseco (IRI), el cual combina la fracción maceral reactiva (vitrinita/liptinita), la fracción maceral no reactiva (inertinita/materia
Andrés Felipe Rojas González, Juan Manuel Barraza Burgos, Jorge Luís Piñeres Mendoza   +2 more
doaj   +1 more source

Prenatal Melatonin Modulates Cardiovascular Function and Oxidative Stress in Guinea Pig Neonates Under Normoxic and Hypoxic Gestation [PDF]

Antioxidants
Introduction: Gestational hypoxia (GH) increases the risk of cardiovascular diseases by inducing oxidative stress and vascular dysfunction. This study investigates whether prenatal melatonin can mitigate these effects in guinea pigs.
Adolfo A. Paz, Tamara A. Jiménez, Pedro Herrera, Josefa Carreño, Damaris Cornejo, Julieta Ibarra-González, Javiera N. Ponce, Felipe A. Beñaldo, Mario Salamanca, Rodrigo Jeria, Esteban G. Figueroa, Alejandro González-Candia, Emilio A. Herrera   +12 more
doaj   +2 more sources

MEJORAMIENTO DE LA REACTIVIDAD DE COQUES UTILIZANDO BREAS COMO ADITIVOS

Revista Colombiana de Química, 2010
Se midió la reactividad al CO de coques en una balanza termogravimétrica construida para tal fin. Se utilizaron coques provenientes de la carbonización de carbones solos y co-carbonizados con breas de carbón y de petróleo como aditivos.
Jose M Rincón, Martha S. Rodriguez, Luis A. Pacheco, Fabio Perez   +3 more
doaj   +1 more source

Estudio Teórico de Reactividad de Cetonas Presentes en Reacciones de Oxidación de Baeyer-Villiger

Revista Tecnológica, 2013
La reactividad de una serie de cetonas alifáticas presentes en las reacciones de oxidación de Baeyer-Villiger hasido estudiada usando el índice de electrofilia global como un descriptor de reactividad.
L. Meneses, F. Pilaquinga, A. Araya
doaj   +8 more sources

Metabolite profiling-based characterization and antibacterial activity of sea cucumber sp. from the Colombian Caribbean Sea [PDF]

Science Progress
Objective Marine organisms such as sea cucumbers represent valuable sources of specialized metabolites with promising applications, making them relevant targets for exploring metabolite distribution and subsequent in-depth characterization.
Manuel E Taborda-Martínez, Adriana Rodríguez-Forero, Mitchell Bacho, Fabián Espitia-Almeida, Ericsson Coy-Barrera, Yeray A Rodríguez-Núñez   +5 more
doaj   +2 more sources

Low‐Valent Metals in Metal‐Organic Frameworks Via Post‐Synthetic Modification

Angewandte Chemie, Volume 135, Issue 49, December 4, 2023., 2023
Matrix isolation of low‐valent complexes within metal–organic frameworks (MOFs) facilitates exceptional gas‐phase catalytic activity, stabilization of solution‐inaccessible catalysts, and fundamental insight into pertinent reaction mechanisms. MOFs present an ideal porous, crystalline, and chemically mutable matrix for such species.
Juan L. Obeso, Michael T. Huxley, José Antonio de los Reyes, Simon M. Humphrey, Ilich A. Ibarra, Ricardo A. Peralta   +5 more
wiley   +2 more sources

Childhood maltreatment history and trauma‐specific predictors of parenting stress in new fathers

Infant Mental Health Journal: Infancy and Early Childhood, Volume 44, Issue 6, Page 767-780, November 2023., 2023
Abstract For new fathers, parenting stress is a risk factor for impaired early parenting and child maltreatment perpetration. Predictors of parenting stress, including fathers’ own experiences of trauma, could be useful intervention targets to support new fathers.
Josephine R. Granner, Shawna J. Lee, Jade Burns, Todd I. Herrenkohl, Allison L. Miller, Julia S. Seng   +5 more
wiley   +1 more source

Immunoglobulin E‐specific allergens against leaf in serum of dogs with clinical features of grass leaf allergy

Veterinary Dermatology, Volume 34, Issue 5, Page 393-403, October 2023., 2023
Background – Grass leaf has been suspected to cause immunoglobulin (Ig)E‐mediated immediate hypersensitivity reactions both in humans and in dogs. However, most studies in this area are case control studies without in vitro data showing the involvement of IgE in the reaction.
Ken Mason, Janet Davies, Merja Ruutu
wiley   +1 more source

Lewis Acid‐Catalyzed Ring‐Opening Alcoholysis of Cyclohexene Oxide: The Role of Open Metal Sites in the Bi(III)‐based Metal‐Organic Framework SU‐101

ChemCatChem, Volume 15, Issue 13, July 7, 2023., 2023
Cyclohexene oxide alcoholysis: SU‐101 was applied for the Lewis acid‐catalyzed ring‐opening alcoholysis of cyclohexene oxide. Abstract SU‐101 was screened for the acid‐catalyzed ring‐opening alcoholysis of cyclohexene oxide. Results indicated access to open metal sites within SU‐101, a fundamental requirement (Lewis acid Bi+3 sites) for this reaction ...
Juan L. Obeso, J. Gabriel Flores, Catalina V. Flores, Reyna Rios‐Escobedo, Julia Aguilar‐Pliego, A. Ken Inge, José Antonio de los Reyes, Ricardo A. Peralta, Ilich A. Ibarra, Carolina Leyva   +9 more
wiley   +1 more source