Results 31 to 40 of about 2,064,850 (237)

Reformas político-institucionales : síntesis de áreas y perspectivas fundamentales

open access: yesCiencia y Sociedad, 1995
Este texto de José Oviedo comprende las diversas políticas públicas, reformas económicas, la reforma social y las reformas políticas e institucionales.
José Oviedo
doaj   +1 more source

Micro and Nanostructural Diversity of Lizard Osteoderm Capping Tissue in Relation to Mechanical Performance

open access: yesAdvanced Functional Materials, EarlyView.
This study shows that lizard osteoderm capping tissue is a hyper‐mineralized hydroxyapatite layer consistently covering the superficial osteoderm surface in those species studied here, yet it varies greatly in morphology, nanostructure, and mechanical performance across species.
Adrian Rodriguez‐Palomo   +10 more
wiley   +1 more source

Baseline report on the evaluation of Familias en Acción [PDF]

open access: yes, 2004
This report describes the survey that was carried out in 122 communities in rural Colombia by the consortium formed by the Institute for Fiscal Studies, Econometria and SEI as the baseline for the impact evaluation of Familias en Acción, a programme to ...
Attanasio, O.   +2 more
core  

From Mechanics to Electronics: Influence of ALD Interlayers on the Multiaxial Electro‐Mechanical Behavior of Metal–Oxide Bilayers

open access: yesAdvanced Functional Materials, EarlyView.
Ultrathin AlOxHy interlayers between aluminum films and polymer substrates significantly improve electro‐mechanical properties of flexible thin film systems. By precisely controlling interlayer thickness using atomic layer deposition, this study identifies an optimal interlayer thickness of 5–10 nm that enhances ductility and delays cracking.
Johanna Byloff   +9 more
wiley   +1 more source

Genetically modified crops and the scientific paradigms from which they emerge in the light of the rights of nature

open access: yesLetras Verdes: Revista Latinoamericana de Estudios Socioambientales, 2014
In this work the scientific paradigms in which the genetic modified organisms were developed are analysed, and how the right of nature are violated, since in the process of developing then, the DNA structure is altered and consequently, the functions of ...
Elizabeth Bravo Velásquez
doaj   +1 more source

Nano‐ and Micro‐Sized Solid Materials Used as Antiviral Agents

open access: yesAdvanced Functional Materials, EarlyView.
Due to the rise of viral infections in humans and possible viral outbreaks, the use of nano‐ or micro‐sized materials as antiviral agents is rapidly increasing. This review explores their antiviral properties against RNA and DNA viruses, either as a prevention or a treatment tool, by delving into their mechanisms of action and how to properly assess ...
Orfeas‐Evangelos Plastiras   +6 more
wiley   +1 more source

Incidencias en transporte alternativo-colaborativo: UBER [PDF]

open access: yes, 2017
Traballo fin de grao (UDC.DER). Dereito.
Martínez Acción, Óscar
core  

Características de uso de plaguicidas químicos y riesgos para la salud en agricultores de la sierra central del Perú

open access: yesRevista Peruana de Medicina Experimental y Salud Pública, 2009
Con el objetivo de conocer las características sobre el uso e impactos en la salud de los plaguicidas químicos de uso agrícola en las provincias de Chupaca y Concepción en los andes centrales del Perú, se desarrolló un estudio descriptivo transversal ...
Ymelda Montoro   +3 more
doaj  

High Energy Density Asymmetric Aqueous Supercapacitor Based on a 2D Manganese Carbide as a Positive Electrode

open access: yesAdvanced Functional Materials, EarlyView.
A circular route, involving upcycling of waste surgical masks, affords a Mn‐based layered carbide with porosity, redox activity and low work function. These features enable its effective operation as positive supercapacitor electrode in an aqueous asymmetric supercapacitor delivering 213 Wh L−1 energy density.
Debabrata Nandi   +7 more
wiley   +1 more source

Los alcances de la Seguridad Ciudadana en Bolivia como Bien público y Tarea de todos

open access: yesCuestiones de Sociología, 2014
El ascenso a la presidencia de Bolivia del dirigente sindical Juan Evo Morales –“Evo” en la voz popular –despertó grandes expectativas. El nuevo discurso estatal promueve una perspectiva de cambios profundos, orientada a la construcción de nuevas ...
Theo Roncken, Joaquín Andrés Chacin
doaj  

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