extractar

Dos revisores, de forma independiente, seleccionaron, extractaron y evaluaron la calidad de los estudios.	Two reviewers independently selected, extracted and evaluated the quality of the tests.
Los óxidos de hierro (Fed) se extractaron por el método de Holmgren (1967) y las formas amorfas (Feo) por el de Schwertmann and Taylor (1977), ambos fueron medidos en absorción atómica.	Total iron oxides (Fed) were extracted with citrate–dithionite (Holmgren, 1967), and the amorphous forms (Feo) with ammonium oxalate (Schwertmann and Taylor, 1977). Iron in the extracts was measured by atomic absorption spectroscopy.
Durante las diferentes dinámicas de trabajo y debates que se realizaban tras las ponencias, se aportaron diferentes e interesantes propuestas y conclusiones que se recogieron, extractaron y expusieron por parte de tres de los participantes en la sesión final del seminario.	Given the different working dynamics and during the debates that took place after the presentations, different and interesting proposals and conclusions were forwarded and arrived at, which were adopted, extracted and discussed by three of the participants in the final session of the seminar.