Results 31 to 40 of about 717,821 (221)

Educación científica : el regreso del ciudadano y de la ciudadana [PDF]

open access: yes, 2003
Este trabajo aborda la problemática de la educación científica desde el punto de vista de la formación ciudadana. Se presenta el concepto de competencia profana. La escuela debería dar a todos los estudiantes la oportunidad de iniciarse en la política de
Désautels, Jacques, Larochelle, Marie
core   +2 more sources

Note on the Pelecaniformes, Ciconiiformes, terns (Sterninae) and black skimmers (Rynchopinae) along the Costa Chica of Oaxaca, Mexico

open access: yesCiencias Marinas, 1998
To study the coastal birds of Oaxaca's Costa Chica, we visited this region in the fall of 1995 and the summer and fall of 1996. During these visits we focused on coastal lagoons and barrier beaches, although we also made two sea trips and visited sandy ...
E Mellink, J Luévano, I Zuria
doaj   +1 more source

La interfase entre la educación superior y la investigación científica en los estudios CTS: Entrevista a Hebe Vessuri [PDF]

open access: yes, 2015
Fil: Estébanez, María Elina. Centro de Estudios sobre Ciencia, Desarrollo y Educación Superior - Facultad de Ciencias Sociales, Universidad de Buenos Aires.
Vessuri, Hebe   +2 more
openaire  

Evaluación de la revista Comunicar: Revista Científica Iberoamericana de Comunicación y Educación [PDF]

open access: yes, 2008
Se realiza una evaluación de la revista científica Comunica: Revista Científica Iberoamericana de Comunicación y Educación. Para ello se sigue una metodología propuesta que incluyen aspectos formales y gestión editorial así como indicadores de ...
Martinez-Avila, Daniel   +1 more
core   +1 more source

Physical origin of the high energy optical response of three-dimensional photonic crystals [PDF]

open access: yes, 2007
The physical origin of the optical response observed in three-dimensional photonic crystals when the photon wavelength is equal or lower than the lattice parameter still remains unsatisfactorily explained and is the subject of an intense and interesting ...
Depine, Ricardo A.   +3 more
core   +2 more sources

The Structure of Nitro‐ and Polynitropyrazoles: X‐Ray Crystallography Versus Theoretical Calculations

open access: yesAsian Journal of Organic Chemistry, EarlyView.
Abstract This publication presents the geometries of 157 nitro‐ and polynitropyrazoles. Among these, 109 compounds were theoretically studied using mainly the B3LYP/6–311++G(d,p) level of theory. Three‐parameter Lee‐Yang‐Parr (B3LYP) is a density functional theory (DFT) method widely used in computational chemistry and constitutes an acceptable ...
Rosa M. Claramunt   +3 more
wiley   +1 more source

Effects of seasonal and interannual events on satellite-derived phytoplankton biomass and production in the southernmost part of the California Current System during 2003–2016

open access: yesCiencias Marinas, 2018
We characterized the spatial and temporal variations of sea surface temperature (SST), satellite-derived chlorophyll a (Chlsat) con-centration, and phytoplankton production (PP) along two 300-km long transects in the southernmost part of the California ...
José Carlos Ortiz-Ahumada   +2 more
doaj   +1 more source

La educación científica : percepción de los alumnos al finalizar educación primaria [PDF]

open access: yes, 2013
Este trabajo pretende poner de manifiesto las actitudes de los alumnos al finalizar la Educación Primaria hacia la Ciencia, así como su percepción de cómo trabajaron las ciencias en esta etapa.
López Luengo, Mª Antonia   +3 more
core   +2 more sources

Synthesis of Crosslinked Biopolyesters Catalyzed by Natural Amino Acids

open access: yesAsian Journal of Organic Chemistry, EarlyView.
Highly crosslinked bio‐polyesters were synthesized via the ROCOP reaction between epoxidized sunflower oil and biobased cyclic anhydrides. The resulting materials were comprehensively characterized by FT‐IR, TGA, and DSC. A cross‐linked network in the bio‐based polymers has been confirmed by dynamic mechanical analysis.
Enrique Francés‐Poveda   +9 more
wiley   +1 more source

Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California

open access: yesCiencias Marinas, 2017
In order to compare phytoplankton biomass (satellite-derived chlorophyll, Chlsat) and production (PP), and sea surface temperature (SST) between the regions north and south of the Ensenada Front, time series were generated from satellite imagery for 250-
Uriel Mirabal-Gómez   +2 more
doaj   +1 more source

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