Results 1 to 10 of about 184,700 (156)
Ocnos, 2015 Presentamos un estudio realizado sobre el proceso de aprendizaje de la escritura en dos grupos de alumnos de Educación Infantil a lo largo de los tres años de escolarización en esta etapa. Un grupo siguió el proceso utilizando el constructivismo, el otro
Juan de Dios Villanueva +1 more
doaj +11 more sources
Biosensors and Bioelectronics: X, 2022 This work aims to develop a photoelectrochemical (PEC) platform for detection of SARS-CoV-2 spike glyprotein S1. The PEC platform is based on the modification of a fluorine-doped tin oxide (FTO) coated glass slide with strontium titanate (SrTiO3 or ST ...
Chirlene N. Botelho +7 more
doaj +1 more source
Solid-Phase Microextraction—Gas Chromatography Analytical Strategies for Pesticide Analysis
Methods and Protocols, 2022 Due to their extensive use and the globalized commerce of agricultural goods, pesticides have become a global concern. Despite the undoubtful advantages of their use in agricultural practices, their misuse is a threat to the environment and human health.
Juan Aspromonte +2 more
doaj +1 more source
Headspace solid-phase microextraction: Fundamentals and recent advances
Advances in Sample Preparation, 2022 Solid-phase microextraction (SPME) has become a powerful sample preparation technique which allows to efficiently isolate and enrich analytes from complex matrixes.
Carlina Lancioni +3 more
doaj +1 more source
International Journal of Food Science, 2022 This study is aimed at comparing the milk fatty acid profile (FAP) of cows that changed from a mixed system (MS) of double grazing plus total mixed ration (TMR) to a total confinement system (TCS, 100% TMR) with cows that changed to another MS with one ...
Lucía Grille +5 more
doaj +1 more source
Diversitas Journal, 2023 A acessibilidade para pessoas com deficiência visual é de vital importância para que ela exerça sua cidadania. Um ambiente laboral adaptado, que disponibiliza tecnologias assistivas (TA), ajuda a pessoa com deficiência visual a executar suas tarefas com
Luciana Muniz Bezerra Schafhauzer +1 more
doaj +1 more source
Método ORAC y su aplicación en la determinación de la capacidad antioxidante de bebidas fermentadas
Revista de la Facultad de Agronomía, 2022 La presencia de especies reactivas de oxígeno generan daños y estrés oxidativo, al haber producción y eliminación de estas especies en el organismo se presentan situaciones patológicas y de envejecimiento, estas especies pueden ser controladas mediante ...
Carlos Zapata, Paola Zapata
doaj +1 more source
Grasas y Aceites, 2017 Pecan nut expeller cake (PNEC), a by-product of pecan oil extraction, was characterized and the effect of packaging and storage conditions was investigated. Samples were packaged under vacuum or in normal atmosphere and stored (10 or 20 ºC) for 12 months.
L. Marchetti +3 more
doaj +1 more source
A Molecular Imprinted Polymer as a Flow-Through Optical Sensor for Oxazepam
Journal of Analytical Methods in Chemistry, 2018 A flow-through optosensing system for oxazepam recognition with fluorescence detection was performed by means of a molecular imprinted polymer based on its acid hydrolysis product, 2-amino-5-chlorobenzophenone.
Roberta G. Machicote +3 more
doaj +1 more source
Análisis de la capacidad de soporte sísmica de fundaciones superficiales [PDF]
, 2014 Indexación: Web of Science; Scielo.In the context of engineering practice, the problem of the seismic bearing capacity of shallow foundations has been solved indirectly, either due an increase of the static allowable soil pressures related to the ...
Paillao V., Danilo +1 more
core +2 more sources