Results 1 to 10 of about 343,291 (192)
Educación científica y competencias docentes: Análisis de las reflexiones de futuros profesores de Física y Química [PDF]
Revista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2013 El presente artículo muestra los resultados de una experiencia orientada a implementar y evaluar una propuesta formativa, de índole socioconstructivista, con futuros profesores de Física y Química.
Antonio García-Carmona
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Paper-Based Working Electrodes Coated with Mercury or Bismuth Films for Heavy Metals Determination
Biosensors, 2020 Paper-based carbon working electrodes were modified with mercury or bismuth films for the determination of trace metals in aqueous solutions. Both modification procedures were optimized in terms of selectivity and sensitivity for the determination of ...
Alberto Sánchez-Calvo +2 more
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Cuadernos audiovisuales de laboratorio : hacia una mejora en la enseñanza de la Química [PDF]
, 1992 The Audiovisual Laboratory Notebooks are frarned into the so-called «active methods for Chemistry teaching», and try to achieve an effective learning, more accurate and at the same time more agreable of the techniques and usual operations in the ...
Seminario Permanente de Física y Química
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Magnetic behavior of mixed spin prussian blue analog cylindrical nanowire
Materials Research Express, 2020 In this work, we implemented Monte Carlo simulations in order to describe the magnetic phase transition properties of a mixed ferro-ferrimagnetic ternary alloy cylindrical nanowire with formula ${{AB}}_{p}{C}_{1-p}$ .
I D Buitrago-Torres +3 more
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The role of references and the elusive nature of the chemical bond
Nature Communications, 2022 The theory of chemical bonding relies on arbitrary references. Here the authors report a fundamental study on the chemical bond showing that considering the binding fragments as objects in real space enables to eliminate inherent biases.
Ángel Martín Pendás, Evelio Francisco
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AFM study of oxygen reduction products on HOPG in the LiPF6–DMSO electrolyte [PDF]
, 2013 Ex situ atomic force microscopy (AFM) has been used to study the morphology of oxygen reduction products in the LiPF6–dimethyl sulfoxide (DMSO) electrolyte, i.e. Li2O2 on a highly oriented pyrolytic graphite (HOPG) surface.
Calvo, Ernesto Julio +3 more
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Grasas y Aceites, 2005 The suitability of two analytical techniques ( viz. near infrared spectroscopy and nuclear magnetic resonance spectroscopy) for the determination of moisture and fat content of olives and pomace was determined.
A. García Sánchez +2 more
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Co-encapsulation of Daphnia magna and microalgae in silica matrices, a stepping stone toward a portable microcosm [PDF]
, 2014 We report on the first silica encapsulation of a metazoan (Daphnia magna), with a high initial viability (96% of the population remained active 48 h after encapsulation).
Aldabe, Sara Alfonsina +4 more
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Journal of Chemistry, 2013 A procedure for the theoretical study of chemical reactions in solution by means of molecular dynamics simulations of aqueous solution at infinite dilution is described using ab initio solute-solvent potentials and TIP3P water model to describe the ...
S. Tolosa, A. Hidalgo, J. A. Sansón
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The Conformations of Isolated Gallic Acid: A Laser-Ablation Rotational Study
Molecules, 2022 The rotational spectrum of laser-ablated gallic acid has been recorded using CP-FTMW spectroscopy. Two rotamers have been detected, and their rotational spectra have been assigned and analyzed to obtain the molecular spectroscopic parameters.
Andrés Verde +2 more
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