Results 151 to 160 of about 2,041,912 (335)

Educación ambiental: una estrategia para enfrentar la crisis ecológica y ambiental

open access: yesPedagogía y Saberes, 1995
Se hacen algunas reflexiones de cómo a través de la educación ambiental, se pueden mejorar las relaciones hombre-naturaleza, y que algunos autores denominan “relaciones naturales de producción”, desde el principio base del conocimiento teórico de los distintostópicos del funcionamiento de los ecosistemas naturales y su degradación ambiental, hasta ...
openaire   +2 more sources

Academic Affairs Happenings, Volume 1, Issue 1 [PDF]

open access: yes, 2012
The Newsletter is an ongoing publication that highlights the wide range of work in which RWU faculty and students are ...
Office of Academic Affairs, Roger Williams University
core   +8 more sources

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou   +15 more
wiley   +1 more source

Educación ambiental en la crisis y crisis de la educación ambiental

open access: yes, 2012
Es preciso repensar la Educación Ambiental una vez asumido que los ciudadanos despues de tres décadas de mensajes y actividades educativas, si bien han cambiado su percepción de los problemas ambientales, apenas ha variado su actitud y su compromiso personal en favor del medio ambiente. La educación ambiental ha de perder el carácter anecdótico y pasar
openaire   +1 more source

Editorial [PDF]

open access: yes, 2008
Actualmente el mundo parece debatirse en un panorama de compromisos planetarios que exigen su cumplimiento serio en el corto plazo y que de no hacerlo pueden devenir en crisis de proporciones insospechadas, tanto en el orden económico como en el ...
Madrigal Uribe, Delfino   +1 more
core  

Three‐dimensional Antimony Sulfide Based Flat Optics

open access: yesAdvanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang   +18 more
wiley   +1 more source

Derechos de la Pachamama: un paradigma emergente frente a la crisis ambiental global [PDF]

open access: yes, 2010
A solo año y medio desde el reconocimiento constitucional del Ecuador de que la Naturaleza tiene derechos, la idea ha caminado tanto que ahora, en un masivo escenario de debate global, despierta enormes entusiasmo. Los trabajos del Grupo 3 de la “Cumbre
Melo Cevallos, Mario
core  

Roll‐to‐Roll Mechanical Exfoliation for Large‐Area van der Waals Films with Preserved Crystallographic Alignment

open access: yesAdvanced Functional Materials, EarlyView.
A roll‐to‐roll exfoliation method is demonstrated that preserves the crystallographic alignment of anisotropic 2D materials over large areas, enabling scalable fabrication of directional electronic and optoelectronic devices. Abstract Anisotropic 2D materials such as black phosphorus (BP), GeS or CrSBr, exhibit direction‐dependent optical and ...
Esteban Zamora‐Amo   +14 more
wiley   +1 more source

Environmental Authority: Transformations and Relocations in Global Modernity = Autoridade ambiental: transformações e relocações na modernidade global [PDF]

open access: yes, 2008
As a public good, the environment has traditionally been handled by public authorities. However, with globalization conventional state environmental authority is transformed, relocated and deterritorialized. New non-state environmental authorities emerge.
Mol, A.P.J.
core   +1 more source

PEDOT‐Based Eutectogel Electrode Arrays for Enhanced High‐Resolution Electrogastrography: Fabrication, Stability, and Wearable Performance

open access: yesAdvanced Functional Materials, EarlyView.
Here, we present a high‐density PEDOT eutectogel electrode array for enhanced body surface gastric mapping. Silver electrodes are blade‐coated onto flexible substrates, followed by electrogelation of PEDOT:PSS and the deposition of a PEDOT:LS eutectogel.
Christopher Slaughter   +8 more
wiley   +1 more source

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