1,721,089 research outputs found
Il ruolo della Guida Spirituale nella comunità Maya kaqchikel di Sumpango [The role played by the Spiritual Guide in the kaqchikel Maya community of Sumpango]
No full textQuesto articolo rende testimonianza dell’attività educativa di Doña Delfina Solloy Jutzuy, non solo insegnante nella scuola primaria bilingue in Guatemala per molti anni, ma guida spirituale nel Villaggio Maya kaqchikel di Sumpango. La traccia di fondo prende spunto dalla sua storia di vita, frutto di un’ampia intervista, e approfondisce il ruolo formativo di “guida”, che non può essere frutto solo di apprendimento, ma richiede la presenza del dono, un talento specifico, che, nelle parole di Delfina ha un’origine sacra. L’obiettivo è quello di esplorare un differente paradigma del femminile nell’ottica di una formazione che superi il concetto di intercultura in quello di trans-cultura. L’orizzonte epistemico è ermeneutico, la metodologia, di impianto qualitativo, si serve degli strumenti della Pedagogia Etnografica
Starting from a leibnizian unpublished writing. Interpretation and educational proposal by Umberto Margiotta
No full textThis article is about the analysis and translation of an unpublished Leibniz by Umberto Margiotta. It is a little-known text but of great importance not only from the point of view of the history of education but also from that of the epistemology of education. The interest in Margiotta’s work on the Leibnizian Confession is born in relation to its hermeneutic key: an epistemological formative, which opens up spaces for reflection on the educational question of the present in comparison with the strategic gaze of one of the most original thinkers of Modernity. In the mid-eighties of the last century, the Italian scholar dedicated himself to the translation (from Latin) and interpretation of the short writing of the German philosopher and scientist to emphasize the emergence, in the dialogic form of the text, of the necessity of the Method. Educational research needs, to be effective, logical foundations that also assume an ethical value, since they outline the role of the human being in the order of the universe and place him in a position to choose and decide on the direction of his probable action. Hence the deep sense of responsibility that freedom has its raison d’être, a wonderful synthesis of Leibniz’s lesson on the meaning of the human in its essential relationship with the divine
Microbial diversity in the hydromagnesite mineralization
No full textBefore the last century, the lithosphere and the biosphere
were counted as two distinct entities, naturally in physical
contact, but materially indipendent in their dynamics. Here, we
present an example of interaction between microbes and
minerals at Montecastelli site (Tuscany, Italy).
Montecastelli serpentinites are characterized by a
spontaneous and intense formation of hydrated carbonate
crusts, coatings and spherules due to uptake atmospheric CO2.
Representative hydrated carbonate samples are collected in
three different studied areas and analyzed to investigate the
natural process of Montecastelli carbonate precipitation in
accordance with their petrographic, isotopic and also biological
characteristics.
XRD analysis revealed that the carbonate precipitates are
formed of mainly hydromagnesite and variable amount of
other metastable carbonate phases (i.e. nesquehonite,
pyroaurite, brugnatellite and manasseite), consistently with
precipitation in a Mg-rich solution.
Stable carbon and oxygen isotope compositions were
determined for about 120 samples using a Gas Bench II to
identify the sources of carbon dioxide within these carbonate
minerals. Samples of Mg-carbonate crusts are characterized
by δ13C values between -14.11 and 10.41 per mil (VPDB),
δ18O values between 25.35 and 36.34 per mil (VSMOW).
Investigation of carbonate crusts at confocal laser scanning
microscopy (CLSM) combined with Raman
spectromicroscopy has allowed to discover the presence of
microbes on the carbonate surface and at the serpentinecarbonate
interface [1]. Microbial types of bacteria discovered
by amplifying, cloning and sequencing 16s DNA genes from
Montecastelli carbonates, reveals a large diversity:
Blastococcus sp., Sphingobium sp., Bacteroides, Legionella
sp., Gamma proteobacterium and Acinetobacter sp.
[1] Bedini F., Boschi C., Ménez B., Perchiazzi N., Zanchetta
G. (2014) Geophysical Research Abstracts Vol. 16, EGU
2014-70
Boschi C. 2011. Die Schneckenfauna der Schweiz. Ein umfassendes Bild- und Bestimmungsbuch.
No full textGermann, Christoph (2012): Boschi C. 2011. Die Schneckenfauna der Schweiz. Ein umfassendes Bild- und Bestimmungsbuch. Entomo Helvetica 5: 108, ISBN: 978-3-258-07697-3
Lectura y generación de conocimiento
No full textEl boom de los medios digitales y su incidencia está afectando a todos los ámbitos culturales y educativos. En el siglo XXI, no podemos vivir ajenos a este progreso que afecta a la cultura escolar. El aprendizaje de la lectura es un proceso lento y difícil que implica no sólo la descodificación de los símbolos, la fluidez y la entonación, sino que incluye sobre todo la comprensión y la generación de conocimiento propio. Reflexio-naremos sobre si el soporte condiciona el modo de leer y sobre los riesgos y aportaciones de los soportes digitales para la generación de conocimiento
Talc-rich hydrothermal rocks from the St. Paul and Conrad fracture zones in the Atlantic Ocean
No full textTalc-rich rocks covered by Fe-Mn coatings were recovered from the St. Paul F.Z. (00°37’S-25°34’W, equatorialAtlantic) and Conrad F.Z. (55°29’S-02°05’W, American-Antarctic Ridge). In both occurrences, the talc-rich rocks are associatedwith serpentinized peridotites, gabbroic rocks and minor basalts. The two rocks have very similar trace element, particularly rareearth element, distributions. The St. Paul F.Z. samples are breccias consisting of angular clasts of botryoidal/colloform talc in asubordinate foraminiferal ooze sediment. These breccias probably formed by the collapse of fragile structures formed by theprecipitation of talc at hydrothermal vents. Talc formed when seawater mixed with hydrothermal fluids from a mafic-ultramaficreaction zone. The talc-rich hydrothermal rock found at the Conrad F.Z. shows evidence of a replacement origin. We suggest theprotolith was a gabbroic rock that underwent multi-stage hydrothermal alteration, possibly in a shear zone.These two occurrences represent an evidence of off-axis ocean floor hydrothermal activity, and the study of similar, apparentlyminor, products collected by dredging could be used to reveal the presence of hydrothermal systems in such impervious settings
Fulde Ferrel Larkin Ovchinnikov oscillations and magnetic domains in the Hubbard model with off-diagonal Coulomb repulsion
No full text- …
