Characterization of the noble gases and CRE age of the D'Orbigny angrite

Introduction: The D’Orbigny angrite, a 16.55 kg stone, was found 1979 in Argentina [1]. Mineralogy and chemistry of this meteorite were characterized in detail [2-6]. A Pb-U-Th age of 4.559 Ga was obtained for pyroxenes by Jagoutz et al. [7]. Here we report results on the noble gas isotopic composition and, in particular, on the cosmic-ray exposure (CRE) age of D’Orbigny

Insurgent aesthetics: Creole rap from the outskirts of Lisbon

The invisibility of the people of African descent in Portugal has been challenged in recent years by a diversity of agents. From the artistic-cultural field to political activism, the voice of those who contest a homogeneous model of Portugueseness based on whiteness and a narrative of exceptionality grows. Black rappers from the outskirts of Lisbon were one of the pioneers in denouncing these contradictions, narrating in their songs the intercultural daily life of their neighborhoods and the tensions of living in a society that sees them as outsiders. The possession of digital devices has opened up new opportunities for these peripheral artists, multiplying the possibilities for them to be heard and made visible. In close connection with the new technologies, they build an insurgent aesthetic that values marginalized areas of the city while at the same time making visible an Afro-Lisbon that is not recognized by the official institutions of State.info:eu-repo/semantics/acceptedVersio

Non-relativistic M-Theory solutions based on Kähler-Einstein spaces

We present new families of non-supersymmetric solutions of D=11 supergravity with non-relativistic symmetry, based on six-dimensional Kaehler-Einstein manifolds. In constructing these solutions, we make use of a consistent reduction to a five-dimensional gravity theory coupled to a massive scalar and vector field. This theory admits a non-relativistic CFT dual with dynamical exponent z=4, which may be uplifted to D=11 supergravity. Finally, we generalise this solution and find new solutions with various z, including z=2

Dipole spectrum structure of non-resonant non-pertubative driven two-level atoms

We analize the dipole spectrum of a two-level atom excited by a non-resonant intense monochromatic field, under the electric dipole approximation and beyond the rotating wave approximation. We show that the apparently complex spectral structure can be completely described by two families: harmonic frequencies of the driving field and field-induced nonlinear fluorescence. Our formulation of the problem provides quantitative laws for the most relevant spectral features: harmonic ratios and phases, non-perturbative Stark shift, and frequency limits of the harmonic plateau. In particular, we demonstrate the locking of the harmonic phases at the wings of the plateau opening the possibility of ultra-short pulse generation through harmonic filtering

The role of Nav1.9 channel in the development of neuropathic orofacial pain associated with trigeminal neuralgia

BACKGROUND: Trigeminal neuralgia is accompanied by severe mechanical, thermal and chemical hypersensitivity of the orofacial area innervated by neurons of trigeminal ganglion (TG). We examined the role of the voltage-gated sodium channel subtype Nav1.9 in the development of trigeminal neuralgia. RESULTS: We found that Nav1.9 is required for the development of both thermal and mechanical hypersensitivity induced by constriction of the infraorbital nerve (CION). The CION model does not induce change on Nav1.9 mRNA expression in the ipsilateral TG neurons when evaluated 9 days after surgery. CONCLUSIONS: These results demonstrate that Nav1.9 channels play a critical role in the development of orofacial neuropathic pain. New routes for the treatment of orofacial neuropathic pain focussing on regulation of the voltage-gated Nav1.9 sodium channel activity should be investigated

Valley to valley: the biological connection between prehispanic residents of Cochabamba, Bolivia, and Azapa, Chile

One of the most interesting problems facing the interpretation of south central Andean prehistory is to de- cipher the genetic relationships among ancient groups that inhabited this region. This study evaluates the biological relationships between the ancient inhabitants of the coast and interior valleys of the Azapa region in northern Chile and the Cochabamba valleys of Bolivia, with reference to highland Tiwanaku groups. Craniometric data (N = 299) were statistically evaluated to compute group means using Mahalanobis (D2) values. Results demonstrate that there is a notable difference between coastal and interior valley populations of the Azapa region; whereas a close biological association exists between groups from the Cochabamba valleys and the interior Azapa valleys, especially for those associated with the Formative and Tiwanaku Periods.Fil: Varela, Hector H.. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Departamento de Cs.naturales; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina;Fil: Cocilovo, Jose Alberto. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Departamento de Cs.naturales; Argentina;Fil: O'brien, Tyler G.. University Of Iowa; Estados Unidos de América

Effects of epitaxial strain on the growth mechanism of YBa2Cu3O7-x thin films in [YBa2Cu3O7-x / PrBa2Cu3O7-x] superlattices

We report on the growth mechanism of YBa2Cu3O7-x (YBCO). Our study is based on the analysis of ultrathin, YBa2Cu3O7-x layers in c-axis oriented YBa2Cu3O7-x / PrBa2Cu3O7-x superlattices. We have found that the release of epitaxial strain in very thin YBCO layers triggers a change in the dimensionality of the growth mode. Ultrathin, epitaxially strained, YBCO layers with thickness below 3 unit cells grow in a block by block two dimensional mode coherent over large lateral distances. Meanwhile, when thickness increases, and the strain relaxes, layer growth turns into three dimensional, resulting in rougher layers and interfaces.Comment: 10 pages + 9 figures, accepted in Phys. Rev.

Test de tolerancia a la glucosa en la hepatopatía alcohólica

El desempeño de nuestras tareas profesionales en una Sala de Clínica Médica nos ha permitido observar la alta frecuencia de internación de pacientes etilistas, portadores de una o más afecciones cuyo origen se halla íntimamente unido a la ingesta de alcohol. Para nuestro estudio hemos tomado 25 pacientes internados en la Sala III del IGSM, sede de la Cátedra de Medicina Interna “D”, y bajo la dirección de su titular hemos realizado el presente trabajo.Facultad de Ciencias Médica