Search results for "America"

Los hombres del presidente

2004

Francia y el modelo europeo

2004

La cruzada antifrancesa

2003

Apoteosis ideológica / 4

2004

Cartas al Director : Respuesta

2003

Ganadores y Perdedores del 11-S

2002

New insights of the volcanic gas signature of the Central American Volcanic Arc

Volcanic gas emissions carry crucial information on pre- and syn-eruptive processes, and on behaviour of active volcanic systems. Gas variations arise from replenishment of magma storage zones with mafic magma, from magma ascent and evolution, and from interaction with hydrothermal systems and volcanic lakes. As such, volcanic gases represent “open windows” into genesis and release of volatiles from the Earth’s interior. Volcanic emission measurements allow understanding subsurface magmatic and hydrothermal processes, and contribute to eruption forecasting. Carbon dioxide and sulfur gas represent the most abundant and studied gas species. In particular, CO2, due his fast exsolution during m…

Allergological implication of the quaternary hexameric structure of the cockroach allergen Per a 3.

2007

Summary Background Cockroach allergens play a very important role in allergic diseases, especially asthma. The major allergen of the American cockroach (Periplaneta americana), Per a 3, naturally occurs as isoforms of hexamers. Objective The aim of this study was to investigate whether the hexameric structures of Per a 3 influence their allergenicity and immunogenicity. Methods Therefore, we compared the different effects of native hexamers and dissociated monomers of cockroach haemolymph (HL), containing almost only Per a 3 proteins (HL-Per a 3), on proliferation and T-helper type 1 (Th1)/Th2 cytokine production of human CD4+ T cells in co-culture with allergen-pulsed monocyte-derived auto…

How credit ratings affect sovereign credit risk: cross-border evidence in Latin American emerging markets

2017

This article builds upon previous literature by providing a better understanding of how contagion changes in bordering sovereign CDS emerging markets resulting from credit rating events. To that end, we follow the novel GVAR methodology using data from six Latin American emerging countries during an extensive sample period from 2004 to 2014. Our findings show evidence for the existence of significant and asymmetric cross-border effects. In particular, a competition effect is observed before the event occurs, indicating that non-event countries suffer (benefit) from upgrades (downgrades) in Brazil, Mexico and Chile (in Argentina and Brazil). In contrast, an imitation effect is observed after…

The Affective Turn and Sacred Femininity in African American Women's Literature

2017

Després del llarg viatge a través de l’Atlàntic a bord dels vaixells esclavistes, els africans van veure’s obligats a enfrontar-se a la seua completa alienació física, social i també espiritual en les terres de l’anomenat ‘Nou Món’. La seua anterior concepció de l’univers com a un lloc on poden exisitir-hi un ventall il·limitat de déus es va veure estroncat per la imposició social d’un univers on l’esclau va perdre tant el seu sentit d’espai com de temps. Així doncs, la evolució històrica del poble afroamericà s’esmerça en conrear una concepció sagrada del seu entorn des del mateix moment en que arriben a terres americanes. Aquesta obligada gestació espiritual els commina a acollir i, alhor…