Buscar
Mostrando ítems 31-40 de 55
Hybrid aminopolymer-silica materials for efficient CO2 adsorption
(ROYAL SOC CHEMISTRY, 2015-01-01)
The present work focuses on the development of a new eco-efficient chemical method for the polymerization of aziridine to hyperbranched polyethyleneimine (PEI) into mesoporous silica by using compressed CO2 as a solvent, ...
Desarrollo de habilidades científicas en la formación inicial de profesores de ciencias y matemática
(Universidad de La SabanaDirección de Publicaciones, 2014)
Estudio que indaga las habilidades científicas en un curso introductorio de robótica en la formación de profesores de física, química y matemática. La investigación se estructuró en dos fases: capacitación en aspectos ...
White Mica Geochemistry: Discriminating Between Barren and Mineralized Porphyry Systems
(Society of Economic Geologists, Inc, 2020-03-01)
The Grasshopper prospect, located 23 km west-southwest from Dillon, Montana, presents exposed zones of phyllic alteration assemblages comprising the early and late phyllic styles. The mineral chemistry of white micas from ...
Structural characterization of the (methanol)4 potential energy surface
(AMER CHEMICAL SOC, 2009-09-24)
In this paper, we report the geometries and properties of the structural isomers obtained from a random walk of the potential energy surface (PES) of the methanol tetramer. Thirty-three structures were obtained after ...
The Jahn-Teller effect: a case of incomplete theory for d4 complexes?
(AMER CHEMICAL SOC, 2011-02-21)
We present relativistic calculations at the four-component Dirac-DFT level for the geometries of the series of group 9 monoanionic hexafluorides MF(6)(-), M = Co, Rh, Ir. Highly correlated four-component relativistic CCSD(T) ...
Structure and reactivity of the (1)Au6Pt clusters
(AMER CHEMICAL SOC, 2010-10-07)
In this paper we report the geometries, properties, and reactivity descriptors of 12 structural isomers located on the MP2/SDDALL potential energy surface of the (1)Au(6)Pt binary clusters. A nonplanar, D(3d) symmetry, ...
Structural studies of the water hexamer
(AMER CHEMICAL SOC, 2010-07-29)
In this paper we report the geometries and properties of 24 structural isomers located on the MP2/6-311++g**potential energy surface of the water hexamer. At least 15 structural patterns are located within 3 kcal/mol of ...
Learning to communicate science increases students’ motivation. “The Scientific Conference”, a didactic proposal in Secondary Education.Aprender a comunicar ciencia aumenta la motivación del alumnado. “La Jornada Científica”, una propuesta didáctica en ESOAprender a comunicar ciência aumenta a motivação dos alunos. “A Jornada Científica”, uma proposta didática em ESO
(Universidad Nacional, Costa Rica, 2019)
Learning to communicate science increases students’ motivation. “The Scientific Conference”, a didactic proposal in Secondary Education.Aprender a comunicar ciencia aumenta la motivación del alumnado. “La Jornada Científica”, una propuesta didáctica en ESOAprender a comunicar ciência aumenta a motivação dos alunos. “A Jornada Científica”, uma proposta didática em ESO
(Universidad Nacional, Costa Rica, 2019)
Análisis de las diferencias de rendimiento del alumnado de centros urbanos y no urbanos a partir de los resultados de los premios extraordinarios de educación secundaria obligatoriaAnalysis of Performance Differences among Students in Urban and Non-urban Centers Based on Compulsory Secondary Education Special Awards
(Universidad Nacional, Costa Rica, 2015)