Results 31 to 40 of about 3,539 (256)

RECENSIÓN Couto Calviño, R. Formación y forma de los contratos bancarios electrónicos, Marcial Pons, Madrid, 2020

open access: yesRevista Jurídica Jalisciense, 2023
RECENSIÓN Couto Calviño, R. Formación y forma de los contratos bancarios electrónicos, Marcial Pons, Madrid, 2020.
Patricia Vargas Portillo
doaj   +1 more source

Spatial Engineering of Gas Diffusion Layers Overcomes Mass Transport Limitations in Fuel Cells

open access: yesAdvanced Science, EarlyView.
ABSTRACT Mass transport limitations at high current densities hinder polymer electrolyte fuel cell (PEFC) performance due to inefficient water management and reactant distribution. Gas diffusion layer (GDL) perforation offers a potential solution as an alternative to complex flow‐field modifications.
Shangwei Zhou   +12 more
wiley   +1 more source

Light and Dark Cycles Control the Structural Evolution of Photoresponsive Supramolecular Systems

open access: yesAngewandte Chemie, EarlyView.
Here, we report a photoswitchable synthetic peptide that, under light energy cycles, exhibits supramolecular polymorphism coupled to darkness‐driven structural self‐selection. We demonstrate that light sustains a transient assembled state in the form of helical nanoribbons, hindering the system from undergoing a transition to the disassembled state ...
Alejandro Méndez‐Ardoy   +6 more
wiley   +2 more sources

Jorge Luis Rodríguez, Teoría analítica del Derecho

open access: yesEunomia, 2021
Este artículo reseña: Jorge Luis Rodríguez, Teoría analítica del Derecho,(2021) Marcial Pons Madrid, 821 pp.  
Miguel Fernández Núñez
doaj   +1 more source

Synchronization‐Dissipation in the Cardiorespiratory System

open access: yesAdvanced Science, EarlyView.
By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Joshua R. Border   +3 more
wiley   +1 more source

Ferritinophagy Rewires Carnitine‐Dependent Lipid Metabolism to Inhibit PRRSV and IAV Replication

open access: yesAdvanced Science, EarlyView.
NCOA4‐mediated ferritinophagy reprograms carnitine metabolism by disrupting Fe‐S cluster biogenesis, thereby establishing an iron‐lipid axis that suppresses various viruses, including PRRSV and IAV. However, viruses counteract this mechanism by degrading NCOA4.
Kaifeng Guan   +7 more
wiley   +1 more source

Redirecting Excited‐State Proton Transfer Through Supramolecular Polymerization in Nanoconfinement

open access: yesAngewandte Chemie, EarlyView.
Supramolecular confinement redirects the excited‐state proton transfer pathway of an amphoteric emitter. In water, the molecule undergoes ESPD, whereas co‐assembly with γ‐cyclodextrin forms nanotubes that template slip‐stacked emitter pairs and enable ESIMPT. Structural and photophysical characterization of the assemblies shows that the preorganization
Luis C. Pantaleone   +8 more
wiley   +2 more sources

Síndrome de hombro doloroso

open access: yesActa Médica Costarricense, 2010
Objetivo: La consulta por hombro doloroso está dentro de las primeras diez causas de consulta en fisiatría y afecta a un alto porcentaje de población económicamente productiva.
Galia Constanza Fonseca-Portilla   +3 more
doaj  

A Symmetric Cogeneration Fuel Cell for Coupled Production of Hydrogen, Ammonia and Formate

open access: yesAdvanced Science, EarlyView.
A symmetric cogeneration fuel cell integrating value‐added chemical synthesis with electricity generation by coupling formaldehyde oxidation with the nitrate reduction was developed. This work highlights the broader potential of symmetric cogeneration fuel cells as a general platform for rational reaction pairing, offering a practical pathway to lower ...
Yingjie Song   +8 more
wiley   +1 more source

A Non‐Covalent [4Fe–4S]/[2Fe] Interface in HydF Guides [FeFe]‐Hydrogenase Maturation

open access: yesAngewandte Chemie, EarlyView.
Bridged or not? 57Fe NRVS reveals a non‐covalent, electronically coupled interaction between the HydF [4Fe–4S] cluster and the [2Fe] precursor. Boltz‐2 structure predictions suggest that the cubane organizes lipoate‐dependent Hmet chemistry, positioning intermediates for assembly of the CH2–NH–CH2 bridge during H‐cluster biosynthesis.
Giorgio Caserta   +6 more
wiley   +2 more sources

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