Results 111 to 120 of about 4,920,417 (369)

Problemas del desarrollo: ¿neocolonialismo o desarrollo autosuficiente?

open access: yesEstudios de Asia y África, 1982
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A. M. Babu, Guillermo Quartucci
openaire   +2 more sources

Surface intermediate species of the 4-isobutylacetophenone adsorption-reaction over fosfotungstic Wells-Dawson heteropoly acid [PDF]

open access: yes, 2009
Surface adsorbed species of isobutylbenzene and 4-isobutylacetophenone on bulk fosfotungstic Wells-Dawson acid have been screened in the present investigation.
Briand, Laura Estefania   +2 more
core   +1 more source

Learning to explain environmental crises: A dialogic analysis of teacher professional learning between Chile and the United States

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Many studies and initiatives are animated by the potential for science education to intervene in the climate crisis and crises of environmental degradation and disinformation. For science teachers to learn to address these issues in their classes, their teaching must expand beyond scientific facts and face controversial social aspects. Dealing
Valeria M. Cabello   +2 more
wiley   +1 more source

El Índice de Derechos de la Niñez en Colombia. Una perspectiva regional

open access: yesReflexión Política, 2007
Se construye el Índice de Derechos de la Niñez (IDN) para la primera infancia en cinco regiones colombianas (Atlántica, Oriental, Central, Pacifica y Bogotá) para los años 1995, 2000 y 2005.
Grupo de Investigación en Desarrollo Regional
doaj  

Phase Equilibria for Quaternary Mixtures in Esterification Reaction Systems [PDF]

open access: yes, 2003
This paper examines the effect of the simultaneous chemical and phase equilibrium on the conceptual design of reactive distillation processes. Esterification of acetic acid with methanol, ethanol and butanol are examined.
Campanella, Enrique Angel   +1 more
core  

Eco‐Innovation: Drivers and Obstacles for Agriculture Firms in a Developing Country

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Sustainable agriculture is becoming increasingly vital for food security and economic growth, particularly as the agricultural sector grapples with challenges posed by climate change. This study, grounded in the environmental innovation theory, resource‐based view, and dynamic capabilities approach, uses logistic and multinomial logistic ...
Nelyda Campos‐Requena   +4 more
wiley   +1 more source

DESARROLLO RURAL: MÁS QUE DESARROLLO AGRÍCOLA

open access: yesRevista de la Facultad de Medicina Veterinaria y de Zootecnia, 2007
El desarrollo rural al igual que el sólo desarrollo, ha estado fuertemente influenciado por la ideaque lo liga con el crecimiento económico. Concebido de esta forma, la manera como se ha intentadoalcanzar desarrollo rural ha sido por medio de la modernización de los sistemas de producciónagropecuaria, del uso indiscriminado de insumos químicos para ...
openaire   +2 more sources

Sustainability Assessment of Circular Strategies in the Agri‐Food Industry: The Case of Olive Mills' By‐Product Valorization

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study integrates multidimensional sustainability indicators into a unified assessment approach to evaluate circular strategies in agri‐food industry businesses. This methodological approach is applied to empirically examine the case of the olive oil industry's by‐product valorization.
David Polonio   +3 more
wiley   +1 more source

Computational Spinning Model to Study Different Expressions Proposed in the Literature for the Elongational Viscosity Evaluation from Spinning Experimental Data [PDF]

open access: yes, 2006
The relation between isothermal elongational flow and other flow kinematics, like shear flow, was of interest since the early stages of rheometry.
Deiber, Julio Alcides   +2 more
core  

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