Results 51 to 60 of about 2,532,839 (338)

Reflexiones tempranas de sonido y calidad acústica en el Palacio de los Deportes

open access: yesAcademia XXII
En el Palacio de los Deportes de Ciudad de México los asistentes y los artistas perciben lo que califican como “rebotes de sonido” que demeritan la calidad acústica.
Ángel Eduardo Arellano Pérez   +1 more
doaj   +1 more source

Editorial

open access: yesRevista Eco-Pós, 2014
Editorial
ECO PÓS
doaj   +1 more source

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

A la espera de una semiótica de los tesoros

open access: yesCuadernos de Información y Comunicación, 2015
Reflexión llena de humor sobre la profusión y curiosa riqueza de los tesoros almacenados en los palacios y catedrales de la ...
Umberto Eco
doaj   +1 more source

Eco-Anxiety and Environmental Education

open access: yesSustainability, 2020
Anxiety and distress about the ecological crisis seems to be a rapidly growing phenomenon. This article analyzes the challenges and possibilities posed by such “eco-anxiety” for environmental education.
Panu Pihkala
semanticscholar   +1 more source

Sustainable Settlement Criteria, Eco-cities and Prospects in Central and Eastern Europe [PDF]

open access: yes, 2004
Eco-city movements constitute a special segment of the sustainable settlement aspirations. Using the classification devised by Mark Roseland, the paper established that the eco-city movement aims at achieving a new, consistent urban solution, while ...
Fleischer, Tamás
core  

Self‐supportive Three‐Way Photoelectrochemical System Achieving Uranium Recycling, Organic Oxidation, and Electricity Generation in Complex Waters

open access: yesAdvanced Functional Materials, EarlyView.
A self‐sustaining solar photoelectrochemical cell (SS‐PEC) is developed to recover uranium from aqueous UO22+ with concurrent organic oxidation and electricity production. The monolithical photoanode directly captures electrons from organic compounds, leading to the oxidation of organic compounds and the decomposition of uranium‐organic complexes ...
Yumei Wang   +7 more
wiley   +1 more source

El pensamiento semiótico de Roman Jakobson.

open access: yesRevista Mexicana de Ciencias Políticas y Sociales, 2019
El proyecto de una ciencia que estudiase todas las posibles variedades de signos y las reglas que gobiernan la producción, el cambio y la interpretación, no es reciente: la poesía y la filosofía presocráticas se interesaron frecuentemente por la ...
Umberto Eco
doaj   +1 more source

The Impact of R&D Investments on Eco-Innovation: A Cross-Cultural Perspective of Green Technology Management

open access: yesIEEE transactions on engineering management, 2022
This article originally seeks to explore the impact of R&D investments and societal culture on green technology management, by applying Hofstede's cross-cultural perspective.
Beatrice Orlando   +4 more
semanticscholar   +1 more source

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen   +4 more
wiley   +1 more source

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