Results 1 to 10 of about 305 (88)

Factores determinantes de las emisiones de CO2 en los sectores industrial y transporte en Ecuador

open access: yesRevista Científica de Ciencias Naturales y Ambientales, 2022
Las emisiones de gases de efecto invernadero (GEI), son una preocupación latente para todos los países del mundo, por esto, muchos de los países forman parte de la creación de tratados, acuerdos y normas que permitan concientizar y plantearse objetivos ...
Karla Muentes   +3 more
doaj   +1 more source

Preparación de un barniz basado en residuos poliméricos como complemento experimental para estudiantes de ingeniería

open access: yesEducación Química, 2023
   En el presente trabajo se presenta el desarrollo y los resultados de una experiencia destinada a la enseñanza de la química en las cátedras de Ingeniería y Ciencia de los materiales y Polímeros de la carrera de Ingeniería Química.
María Eugenia Taverna   +5 more
doaj   +1 more source

The trehalose 6‐phosphate phosphatase family in plants

open access: yesPhysiologia Plantarum, Volume 175, Issue 6, November/December 2023., 2023
Abstract Trehalose 6‐phosphate (Tre6P), the intermediate of trehalose biosynthesis, is an essential signalling metabolite linking plant growth and development to carbon metabolism. While recent work has focused predominantly on the enzymes that produce Tre6P, little is known about the proteins that catalyse its degradation, the trehalose 6‐phosphate ...
Sandra Mae‐Lin Kerbler   +3 more
wiley   +1 more source

Green Synthesis by Microwave Irradiation of TiO2 Using Cinnamomum verum and the Application in Photocatalysis

open access: yesJournal of Chemistry, Volume 2023, Issue 1, 2023., 2023
The extraction process of bioactives from the aqueous extract of cinnamon (Cinnamomum verum) was optimized using the Design Expert 11 program and analysis of variance (ANOVA) by considering the following parameters: cinnamon weight (g), power (W), and time (s) of microwave irradiation.
Dante E. González-Anota   +7 more
wiley   +1 more source

Structural Effects of pH Variation and Calcium Amount on the Microencapsulation of Glutathione in Alginate Polymers

open access: yesBioMed Research International, Volume 2022, Issue 1, 2022., 2022
Reduced glutathione (GSH) has a high antioxidant capacity and is present in nearly every cell in the body, playing important roles in nutrient metabolism, antioxidant defense, and regulation of cellular events. Conversely, alginate is a macromolecule that has been widely used in the food, pharmaceutical, biomedical, and textile industries due to its ...
Daniel Bustos   +4 more
wiley   +1 more source

Elaboración de nanopartículas de plata sintetizadas a partir de extracto de hojas de romero (Rosmarinus officinalis L.) y su uso como conservante

open access: yesLa Granja: Revista de Ciencias de la Vida, 2021
Las nanopartículas son materiales que pueden llegar a medir entre 1 a 100 nm de longitud, y en la actualidad la propiedad antimicrobiana de las nanopartículas de plata es aprovechada por las industrias para la fabricación de productos de belleza y ...
Lucas Pardo   +2 more
doaj   +1 more source

Safety and Efficacy of a Beverage Containing Lupine Protein Hydrolysates on the Immune, Oxidative and Lipid Status in Healthy Subjects: An Intervention Study (the Lupine‐1 Trial)

open access: yesMolecular Nutrition &Food Research, Volume 65, Issue 14, July 2021., 2021
The intake of a functional beverage based on Alcalase 2.4 L‐generates lupine protein hydrolysates for 28 days which increases the anti‐inflammatory microenvironment, as well as the cellular antioxidant capacity in healthy subjects. In addition, the intake of this beverage reduces the LDL‐C/HDL‐C atherogenic index.
Ivan Cruz‐Chamorro   +13 more
wiley   +1 more source

Phenylisoxazole‐3/5‐Carbaldehyde Isonicotinylhydrazone Derivatives: Synthesis, Characterization, and Antitubercular Activity

open access: yesJournal of Chemistry, Volume 2021, Issue 1, 2021., 2021
Eight new phenylisoxazole isoniazid derivatives, 3‐(2′‐fluorophenyl)isoxazole‐5‐carbaldehyde isonicotinylhydrazone (1), 3‐(2′‐methoxyphenyl)isoxazole‐5‐carbaldehyde isonicotinylhydrazone (2), 3‐(2′‐chlorophenyl)isoxazole‐5‐carbaldehyde isonicotinylhydrazone (3), 3‐(3′‐clorophenyl)isoxazole‐5‐carbaldehyde isonicotinylhydrazone (4), 3‐(4′‐bromophenyl ...
Fernando Carrasco   +12 more
wiley   +1 more source

Relación entre el perfil de la población estudiantil y su rendimiento académico en un curso de Química General

open access: yesRevista Educación, 2023
El objetivo de esta investigación es mostrar los resultados del estudio estadístico del desempeño de estudiantes que matriculan el curso de Química General 1 en la sede Interuniversitaria de Alajuela de la Universidad de Costa Rica para las carreras de ...
Jenncy Carazo Mesén   +2 more
doaj   +1 more source

Decoupled solution of the sediment transport and 2D shallow water equations using the finite volume method

open access: yesResults in Engineering, 2022
In this paper was successfully implemented a numerical solution of the sediment transport and 2D shallow water equations using the decoupled approach. Different discharge formulas to approximate the solid discharge of the sediment were used.
Diego Fernando Bautista-Parada   +2 more
doaj   +1 more source

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