Results 41 to 50 of about 66,582 (246)

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat   +5 more
wiley   +1 more source

Evolución del cumplimiento del nivel de transparencia electrónica de los ministerios peruanos, 2018-2020

open access: yesEstado & Comunes
Hasta 2017, solo uno de dieciocho ministerios en Perú publicó información completa en el Portal de Transparencia Estándar, conforme a lo estipulado por la Ley de Transparencia. Este artículo ofrece un diagnóstico de la evolución de ese resultado para el
Yulissa Navarro-Castillo   +1 more
doaj   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente   +3 more
wiley   +1 more source

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

open access: yesAdvanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu   +4 more
wiley   +1 more source

La iglesia como comunidad ministerial : reflexiones teológico dogmaticas acerca de la comunidad eclesial como contexto de los ministerios

open access: yesCuestiones Teológicas, 2020
Introducción No puede ser tratado el tema de los ministerios eclesiales, de manera conveniente, sin partir para ello de una reflexión teológica acerca de la comunidad de la Iglesia, en función de la cual ellos existen.
Alberto Ramírez
doaj  

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

Administraciones públicas en TikTok. Comunicación, narrativa y frecuencia de publicación de los perfiles de los ministerios de España

open access: yesRevista de Comunicación
El interés de las Administraciones públicas por interactuar y generar conversación con los ciudadanos ha propiciado la apertura de perfiles en redes sociales.
Nadia Alonso-López   +2 more
doaj   +1 more source

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel   +4 more
wiley   +1 more source

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

Las políticas de enseñanza de prácticas periodísticas y la producción de periódicos escolares en Argentina y Brasil

open access: yesSigno y Seña, 2019
La introducción de prácticas de lenguaje como contenidos curriculares en Argentina y Brasil, a partir de la década de los 90, implica la elección de formas de representar, textualizar y enseñar las mismas.
Adair Bonini
doaj   +1 more source

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