Search results for "Andes"
showing 10 items of 263 documents
Crustal controls on light noble gas isotope variability along the andean volcanic arc
2021
This study combines new noble gas data from fluid inclusions in minerals from Sabancaya, Ubinas, and El Misti (CVZ, Peru) and Villarica (South Chile, SVZ) with a revised noble gas compilation in the Andes, to identify systematic along arc variations in helium isotope compositions. We find 3He/4He ratios varying from 8.8 RA (Colombia) to 7.4 RA (Ecuador) within the NVZ, and only as high as 6.4 RA in the CVZ (RA is the atmospheric 3He/4He ratio of 1.39 × 10–6). These distinct isotope compositions cannot be explained by variable radiogenic 4He production via slab fluid transport of U and Th in the mantle wedge, since both NVZ and CVZ share similar slab sediment inputs (Th/La ≈ 0.08–0.13). Inst…
Proposal of a Geographic Information System for modeling zoonotic fasciolosis transmission in the Andes
2004
ABSTRACT The present study describes the basis for the development of a Geographic Information System(GIS) for conducting an epidemiological analysis of human and animal fasciolosis in the Andes. Themethodology proposes the use of various data bases - those derived from epidemiologicalmutidisciplinary studies and environmental data derived from terrestrial stations and remote sensing. Key words : Fasciola hepatica, fasciolosis transmission, Andes, geographic information system,model. INTRODUCTIONOver the last decade, the importance of humanand animal fasciolosis in various south Americancountries has been emphasized in the scientificliterature 1-5 ; indeed, human infection by Fasciolahepati…
Model to Assess the Quality of Magmatic Rocks for Reliable and Sustainable Constructions
2017
Geomechanical assessment of rocks requires knowledge of phenomena that occur under the influence of internal and external factors at a macroscopic or microscopic scale, when rocks are submitted to different actions. To elucidate the quantitative and qualitative geomechanical behavior of rocks, knowing their geological and physical–mechanical characteristics becomes an imperative. Mineralogical, petrographical and chemical analyses provided an opportunity to identify 15 types of igneous rocks (gabbro, diabases, granites, diorites, rhyolites, andesites, and basalts), divided into plutonic and volcanic rocks. In turn, these have been grouped into acidic, neutral (intermediate) and basic magmat…
Gillis van Coninxloo, in G. C. SCIOLLA (a cura di), Cielo terra e acque: il paesaggio nella pittura fiamminga e olandese tra Cinquecento e Seicento, …
2006
Gillis van Coninxloo, in G. C. SCIOLLA (a cura di), Cielo terra e acque: il paesaggio nella pittura fiamminga e olandese tra Cinquecento e Seicento, Torino, Elede, 2006 p. 35-133
Brief an Garlieb H. Merkel
1798
Ms. 930a, Nr. 10, Bl. 26r-28v Schmidt-Phiseldeck, Konrad von. Brief an Garlieb H. Merkel, Kopenhagen, am 6. März 1798 Autora rokraksts / Autograph, vācu un latīņu val. / Deutsch und Latein [6] lpp. / S. Attēlu numuri / Bildnummern: 930a-010-1 – 930a-010-6 Der Verfasser äußert zum Beginn seines Briefes erneut sein Bedauern über die räumliche Trennung und wünscht sich, nach Italien zu reisen. Weimar, wo Merkel zum gegebenen Zeitpunkt wahrscheinlich weilte, glorifiziert Schmidt-Phiseldeck mit der Bezeichnung als „Weimar-Athen“. Gleichzeitig drückt der Verfasser seine Enttäuschung über die Politik Frankreichs bezüglich der Schweiz aus, erkennt aber in der Neutralität seiner neuen Heimat Dänemar…
Diagnostics of capillary light sources by means of line shape measurements and modeling
2012
In this work the Hg visible triplet spectral lines were measured by means of Fourier Transform spectrometer and deconvoluted by Tikhonov's regularisation method and line shape modelling. The lines were collected from Hg/Ar and Hg/Xe high frequency capillary lamps. In our previous work, the spatial plasma homogeneity of isotope Hg/Xe and Hg/Ar capillary lamps was investigated by means of tomography. The lamps were operated in different working positions – horizontally and vertically. In this work the spectral diagnostics of capillary light sources by means of spectral line shape measurements and modelling is presented to obtain plasma temperature. The results are compared with the results fo…
Effects of climate, land cover and topography on soil erosion risk in a semiarid basin of the Andes
2016
Understanding soil erosion processes in the Ecuadorian Andes with a tropical wet-dry climate and a variable topography, is fundamental for research on agriculture sustainable, environmental management, as well as for a stable water supply for the local populations. This work proposes method to estimate soil erosion risk in the semiarid Catamayo basin with limited data. The results show that the rainfall distribution and the erosivity along with the rugged topography, followed by the land cover (C-factor), are the most important factors to estimate soil erosion risk. The soil erodibility is the most important factor in the dry season for agricultural areas and where the ground cover is spars…
IRISHNESS. RAPPRESENTAZIONI DELL'IDENTITA' NAZIONALE NELL'OPERA DELLA FIELD DAY THEATRE COMPANY
2014
La nozione di identità, nelle sue molteplici declinazioni in senso culturale, storico e nazionale, rappresenta uno dei temi cardine al centro del dibattito dei Cultural Studies.molto solida come quella irlandese; è proprio questo tentativo complesso e ambizioso di ridefinizione che cercheremo di indagare nel corso di questo studio. Grazie alle analisi di Stuart Hall (1980), Paul Gilroy (1993)2, Iain Chambers (2003)3, Helene Cixous (2008)4, dovrebbe essere ormai assodato che parlare di identità fisse, rigide, essenziali, impermeabili ad ogni tipo di contaminazione sia una tesi difficile da sostenere e come sarebbe meglio parlare piuttosto di “formazioni identitarie”, costruzioni flessibili, …
The reason for a project that was never performed: Alvar Aalto and the residential complex in Pavia (1966-68)
2015
This paper aims to analyze the characteristics of the project for the residential complex "Patrizia" in Pavia by Alvar Aalto (1966-1968). Although not realized, for political and economic reasons, the project offers an interesting example of urban planning in an “organic key”. In particular, this paper aims to contextualize the project of Aalto in the broader context of the residential building in Italy after World War II, when the problems of reconstruction and "home" are the heart of the debate on architecture. The project, in fact, takes place in the years immediately following the experiments of the social housing plan INA CASA (1949-63), which - with differences in design and architect…
ALLA RICERCA DELL’UGUAGLIANZA NELLA REGOLAMENTAZIONE PENALE DELLA CLANDESTINITA`: UN PRINCIPIO A STRUTTURA INVERSA
2020
Il contributo intende evidenziare il ruolo determinante che nel diritto penale dell’immigrazione assume il livello dell’applicazione normativa ai fatti concreti per riuscire a garantire il rispetto del principio di uguaglianza. I caratteri discriminatori delle previsioni astratte sono, in questa materia più che in altre, destinati ad essere corretti nella fase della concreta applicazione delle norme. Si può in proposito ricorrere ad una immagine del principio di uguaglianza come costruito secondo una struttura inversa: esso non si affida alla capacità ordinante che le norme hanno sulla realtà, ma piuttosto delinea il suo volto a partire dalle esigenze che quest’ultima impone alla qualificaz…