Results 51 to 60 of about 9,429,731 (153)

Liquid‐phase oxidation of furfural catalyzed by magnetically separable metal oxide nanoparticles deposited on silica gel

Biofuels, Bioproducts and Biorefining, Volume 20, Issue 5, Page 2096-2105, September/October 2026.
Abstract Oxidation of furfural (FF), a bio‐based platform chemical, was investigated using a range of iron‐, vanadium‐ and iron–zinc‐oxalates supported on silica gel (FeVOx@silica and FeZnOx@silica, respectively) as precursor for FeV@silica and FeZn@silica oxide catalysts and H2O2 as a green oxidant.
Alexander Pokutsa, Alina Mariana Balu, Rafael Luque   +2 more
wiley   +1 more source

A Dual Approach Combining Metal‐Organic Frameworks and Commercial Solid‐Phase Microextraction Coatings for Monitoring Volatiles in Passion Fruit

Journal of Separation Science, Volume 49, Issue 9, September 2026.
A CIM‐80(Al) metal‐organic framework coating is proposed for the untargeted analysis of passion fruit juices using either headspace or direct immersion solid‐phase microextraction coupled with gas chromatography‐mass spectrometry. The CIM‐80(Al)‐coated fiber enabled the annotation of 14 unique compounds not detected with commercial fibers.
Montse Saura‐Cayuela, Martina Rosso, Cecilia Cagliero, Jorge Pasán, Juan H. Ayala, Verónica Pino, María J. Trujillo‐Rodríguez   +6 more
wiley   +1 more source

The Antiproliferative Effect of Cyclodipeptides from Pseudomonas aeruginosa PAO1 on HeLa Cells Involves Inhibition of Phosphorylation of Akt and S6k Kinases

Molecules, 2017
Pseudomonas aeruginosa PAO1, a potential pathogen of plants and animals, produces the cyclodipeptides cyclo(l-Pro-l-Tyr), cyclo(l-Pro-l-Phe), and cyclo(l-Pro-l-Val) (PAO1-CDPs), whose effects have been implicated in inhibition of human tumor cell line ...
Laura Hernández-Padilla, Dolores Vázquez-Rivera, Luis A. Sánchez-Briones, Alma L. Díaz-Pérez, José Moreno-Rodríguez, Mario A. Moreno-Eutimio, Victor Meza-Carmen, Homero Reyes-De la Cruz, Jesús Campos-García   +8 more
doaj   +1 more source

Acute and Chronic Effects of Green Tea Kombucha With and Without Grape Skin Extract on Immune and Oxidative Stress Markers in Beginner Runners: A Randomized Controlled Trial

Journal of Food Science, Volume 91, Issue 9, September 2026.
ABSTRACT Green tea kombucha is an antioxidant‐rich beverage with promising health benefits. However, evidence regarding its effects in physically active individuals remains limited. This study investigated the acute and chronic effects of green tea kombucha, with or without grape skin extract, on immune and oxidative stress markers in beginner runners.
Dandara Baia Bonifácio, Rayanne Santos de Paulo, Pedro Henrique Viana Mendes, Udielle Vermelho Lacerda, Rodrigo Rezende Cardoso, Helton de Sá Souza, Frederico Augusto Ribeiro de Barros, Josefina Bressan   +7 more
wiley   +1 more source

Ludo Químico

, 2014
Ensino Médio::QuímicaLudo Químico é um jogo de química, que possui um tabuleiro mostrando um caminho que será percorrido no decorrer das jogadas com o dado, podendo passar pelos quadrinhos sem responder as perguntas ou respondendo corretamente as ...
Guerreiro, Manuel
core  

Desempenho global do complexo químico no Brasil [PDF]

, 1995
Periodicidade: irregularData de início e fim da coleção na biblioteca: 1994-1998Equipe técnica responsável: José Eduardo Pessoa de Andrade, Flávia Cruz EstevesO presente trabalho destaca o desempenho do complexo químico, focalizando dados globais de ...

core   +1 more source

Diseño e implementación de una secuencia didáctica para la enseñanza del concepto de elemento químico

Praxis & Saber, 2020
Este estudio propone la implementación de una secuencia didáctica basada en el modelo de aprendizaje como investigación orientada, para la enseñanza del concepto de elemento químico en la educación secundaria.
Dulce María López
doaj   +1 more source

Chemical control of the fairy ring spot of carnation caused by Heterosporium echinulatum Control químico de la mancha foliar anillada del clavel causada por Heterosporium echinuletum

Agronomía Colombiana, 1991
The fairy ring spot caused by Heterosporium echinulatum- is one of the most limiting diseases of miniature carnation in<br />Colombia. An experiment was carried out in 1989 to evaluate the control of diseases with the application of four fungicides
Peñaranda Luis Alfonso, Torres Hernán Jose, Arbeláez Germán   +2 more
doaj  

Efecto del Fosfito de Potasio en Combinación con el Fungicida Metalaxyl + Mancozeb en el Control de Mildeo Velloso (Peronospora destructor Berk) en Cebolla de Bulbo (Allium cepa L.) Effect of the Potasium Phosphite in Combination with the Fungicide Metalaxyl plus Mancozeb on the Control of Downy Mildew (Peronospora destructor Berk) in Onion Bulb (Allium cepa L.)

Revista Facultad Nacional de Agronomía Medellín, 2012
Resumen. El hongo Peronospora destructor causa considerables pérdidas en la producción de cebolla de bulbo en el mundo. Fosfito de potasio en combinación con el fungicida Metalaxyl + Mancozeb, fue evaluado por su eficiencia en el control de este patógeno
Jorge Velandia Monsalve, Silvio Edgar Viteri Rosero, Nubia Janeth Rubio Cárdenas, Fabián Octavio Tovar Duarte   +3 more
doaj  

El análisis químico en el control de procesos metalúrgicos

Revista de Metalurgia, 1998
Se pone de manifiesto el papel del análisis químico en la industria metalúrgica, en cuanto que permite garantizar la calidad de los productos requeridos.
A. G. Coedo, M. T. Dorado, I. Padilla
doaj   +1 more source