Results 131 to 140 of about 230,956 (200)

Deepening on the Intercalation Pseudocapacitive Behavior of Ti0.33Nb0.66O2 Rutile as the Anode Material for Lithium‐Ion Batteries

open access: yesChemElectroChem, Volume 13, Issue 9, 5 May 2026.
This study shows that the beneficial effect of Nb by Ti partial substitution on TiO2 consists of a significant increase in the lithium diffusion coefficient, resulting from the opening of structural tunnels. This explains the intercalation pseudocapacitive behavior of Nb‐derivatives of TiO2. The electrochemical performance of a rutile with high niobium
Andrés Solana   +2 more
wiley   +1 more source

The barley–malt–beer chain: A process and food safety approach

open access: yesJSFA reports, Volume 6, Issue 5, Page 144-159, May 2026.
Abstract This review addresses the current state of knowledge on the barley–malt–beer chain and its main physical, chemical, and microbiological contaminants, with particular emphasis on spoilage microorganisms and their toxic metabolites. The barley–malt–beer production chain represents a mature and globally relevant agro‐industrial sector that ...
José Gómez‐Espinoza   +5 more
wiley   +1 more source

Crystal structure and functional characterization of an Asp49 phospholipase A2 from the bushmaster (Lachesis muta)

open access: yesActa Crystallographica Section F, Volume 82, Issue 5, Page 150-159, May 2026.
The crystal structure of an Asp49 phospholipase A2 from L. muta is reported, revealing a tetrameric assembly, catalytic conservation and a polarized electrostatic surface potentially linked to membrane targeting.Snake‐venom phospholipases A2 (PLA2s) are small, structurally conserved enzymes that contribute significantly to the pathophysiology of ...
Noelia Erika Neyra Chama   +9 more
wiley   +1 more source

Structures of variants of Escherichia coli flavodiiron‐type nitric oxide reductase reveal changes in the di‐iron site

open access: yesActa Crystallographica Section D, Volume 82, Issue 5, Page 457-470, May 2026.
Flavodiiron proteins (FDPs) are di‐iron enzymes that reduce NO and/or O2 with distinct substrate selectivity. We have produced E. coli FDP variants targeting second coordination‐sphere residues and determined their structures. Although the kinetics remained unchanged, the E.
Patrícia T. Borges   +8 more
wiley   +1 more source

Estrategia de enseñanza basada en gamificación en la asignatura Bioquímica de la carrera de Medicina

open access: yesRevista Digital de Postgrado
La gamificación se define como el uso de mecánicas y dinámicas de los juegos en contextos no lúdicos, como el proceso de enseñanza-aprendizaje. El objetivo de este estudio fue implementar estrategias de enseñanza basadas en la gamificación que permitan ...
Ingrist Alemán, Mario Patiño Torres
doaj   +1 more source

Evaluación de la actividad catalasa y peroxidasa como un posible mecanismo de tolerancia a la desecación en el musgo Racomitrium Crispipilum (Grimmiceae) durante la época seca en el Páramo de Chingaza, Colombia

open access: yesActa Biológica Colombiana, 2006
Con el fin de detectar un posible mecanismo de tolerancia a la desecación por parte del musgo Racomitrium crispipilum, especie que habita sitios expuestos y con escasez de agua, se realizaron mediciones de su contenido de proteínas solubles y de la ...
Andrés Felipe Barón López   +2 more
doaj  

Respuesta germinativa de Phaseolus vulgaris var. Velazco. en condiciones de estrés salino

open access: yesAgrisost
Contexto: La salinidad de los suelos constituye uno de los estreses abióticos más importantes que afecta el crecimiento y el desarrollo de los cultivos, en especial durante la etapa de germinación, donde la planta es más vulnerable.
Maryla Sosa del Castillo   +5 more
doaj   +1 more source

Propuesta de una secuencia didáctica sobre la química de los carbohidratos y la salud nutricional en el bachillerato

open access: yesEducación Química
En la presente investigación se implementó una secuencia didáctica ante los resultados hallados en una encuesta que demostró un consumo frecuente de alimentos procesados ricos en azúcares y la necesidad del alumnado por aprender sobre carbohidratos ...
Ailed Berenice Flores-Chávez   +1 more
doaj   +1 more source

Monovalent mannose‐glycoconjugates of sulforaphane reprogram human dendritic cells via NFATc1 to induce immune tolerance under inflammatory conditions

open access: yesBritish Journal of Pharmacology, Volume 183, Issue 9, Page 1993-2008, May 2026.
Abstract Background and Purpose Immune tolerance prevents inflammation and autoimmunity, with dendritic cells (DCs) playing a key role. Reprogramming DCs towards a tolerogenic state represents a promising therapeutic strategy. Sulforaphane (SFN) has known immunomodulatory effects, but its clinical application is limited by poor stability and ...
María Elena Angarita‐Planchez   +6 more
wiley   +1 more source

Urine‐Derived iPSC Neurospheres Uncover Proteomic Correlates of Clinical Severity in Dravet Syndrome

open access: yesJournal of Neurochemistry, Volume 170, Issue 5, May 2026.
Urine epithelial cells from Dravet syndrome (DS) patients carrying distinct SCN1A variants were reprogrammed into induced pluripotent stem cells (iPSCs) and differentiated into neural stem cells (NSCs) to generate patient‐derived neurospheres. Three neurosphere lines were analyzed in biological triplicates using isobaric quantitative proteomics ...
Michele Martins   +9 more
wiley   +1 more source

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