Results 41 to 50 of about 747,501 (311)

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler   +4 more
wiley   +1 more source

Santiago

open access: yes, 2013
En el proceso de definición del nuevo régimen político del Principado, Augusto contó con la valiosa y leal colaboración de Marco Agripa, brillante militar y eficaz servidor público. La atribución de poderes tradicionales republicanos a Augusto y Agripa, como el imperium proconsulare y la tribunicia potestas, mantenían la apariencia de una Res publica ...
openaire   +3 more sources

Alejandro Portes: la teoría de la racionalidad poblacional y el movimiento de pobladores en los largos sesenta chilenos

open access: yesPersona y Sociedad, 2017
El presente trabajo revisita la tesis doctoral del sociólogo Alejandro Portes, desarrollada a finales de la década de 1960 en cuatro poblaciones de la periferia de Santiago de Chile. Buscando comprender el explosivo proceso de urbanización y movilización
Rodrigo Millán
doaj   +1 more source

Atomic Layer Deposition Processes: Versatile Platforms for Engineering ZnO‐Chitosan Biointerfaces

open access: yesAdvanced Healthcare Materials, EarlyView.
Vapour phase metalation (VPM), multiplied pulsed vapour phase infiltration (MPI), and O2 plasma‑enhanced atomic layer deposition (PEALD) tailor Zn–chitosan (Zn‑CS) films. PEALD improves wettability and biocompatibility. MPI enhances semiconductor behavior. Antiseptic selectivity: VPM → E. coli; MPI → H. pylori.
Mabel Moreno   +17 more
wiley   +1 more source

Lipodistrofia Parcial Familiar tipo 2: a propósito de un caso

open access: yesGalicia Clínica, 2021
UETeM-Molecular Pathology Group, IDIS-CIMUS (Centro de Investigación en Medicina Molecular y Enfermedades Crónicas), Universidadede Santiago de Compostela, Galiza.
David Araújo Vilar   +1 more
doaj   +1 more source

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

open access: yesAdvanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens   +8 more
wiley   +1 more source

Europa Mediterránea: Peregrinos y guerreros, peregrinos guerreros

open access: yesAd Limina, 2010
El artículo analiza en primer lugar la relación entre espacio, tiempo y peregrinación en el interior “de los diversos estratos y clases sociales”. De estas consideraciones deriva ante todo la neta división entre, por un lado, la peregrinación del mundo ...
Benedetto Vetere
doaj   +1 more source

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

open access: yesAdvanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez   +8 more
wiley   +1 more source

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

open access: yesAdvanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal   +7 more
wiley   +1 more source

Memorias urbanas en la periferia de Santiago. Develando violencias y resistencias en la ciudad

open access: yesPersona y Sociedad, 2020
Este ensayo explora cómo la experiencia de vivir en la periferia económica y social de Santiago, marcada por un crecimiento rápido, desregulado y desigual, habilita formas de recordar que producen o dificultan sentidos de pertenencia territorial.
Manuela Badilla Rajevic
doaj   +1 more source

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