Cambio de soberanía y migración premarital en Olivenza (España)

El sistema de cruzamientos de una población determina su estructura genética, ya que de aquél dependerá que los genes de una generación persistan en la siguiente. La elección de cónyuge está condicionada principalmente por factores socioculturales y geográficos; la existencia de barreras políticas constituye un caso particular. Con el propósito de analizar si la modificación de una frontera nacional puede haber influido sobre el sistema marital, se ha considerado una localidad de Olivenza situada al suroeste de la capital española de Badajoz, entre España y Portugal, que fue transferida de dominio en 1801. A partir de la información que se extrae de los 3774 matrimonios celebrados por el rito católico entre 1750 y 1850, se cuantifica la migración premarital para cada sexo por separado, antes y después del cambio de frontera. Se pone de relieve la influencia de ese factor político sobre el patrón de migración interpoblacional.Eje: BiodemografíaAsociación de Antropología Biológica de la República Argentina (AABRA

Cambio de soberanía y migración premarital en Olivenza (España)

El sistema de cruzamientos de una población determina su estructura genética, ya que de aquél dependerá que los genes de una generación persistan en la siguiente. La elección de cónyuge está condicionada principalmente por factores socioculturales y geográficos; la existencia de barreras políticas constituye un caso particular. Con el propósito de analizar si la modificación de una frontera nacional puede haber influido sobre el sistema marital, se ha considerado una localidad de Olivenza situada al suroeste de la capital española de Badajoz, entre España y Portugal, que fue transferida de dominio en 1801. A partir de la información que se extrae de los 3774 matrimonios celebrados por el rito católico entre 1750 y 1850, se cuantifica la migración premarital para cada sexo por separado, antes y después del cambio de frontera. Se pone de relieve la influencia de ese factor político sobre el patrón de migración interpoblacional.Eje: BiodemografíaAsociación de Antropología Biológica de la República Argentina (AABRA

Heart ventricular activation in VAT difference maps from children with chronic kidney disease

Children with chronic kidney disease (CKD) are affected by cardiovascular complications, including disturbances in the intraventricular conduction system. Body surface potential mapping (BSPM) is a non-invasive method of assessing the cardioelectrical field. Our aim was to investigate conduction disturbances in young CKD patients using ventricular activation time (VAT) maps. Our study comprised 22 CKD children (mean age: 13.1 ± 2.5 years) treated conservatively and 29 control patients. For each child 12-lead electrocardiogram (ECG) readings were taken, and blood pressure and serum concentrations of iPTH, Pi, t-Ca, creatinine, Fe+3, ferritin, and Hb, as well as eGFR were measured. All children underwent registration in the 87-lead BSPM system, and group-mean VAT maps and a difference map, which presents statistically significant differences between the groups, were created. The VAT map distribution in CKD patients revealed abnormalities specific to left anterior fascicle block. The difference map displays the areas of intergroup VAT changes, which are of discriminative value in detecting intraventricular conduction disturbances. Intraventricular conduction impairments in the left bundle branch may occur in children with CKD. BSPM enables conduction disturbances in CKD children to be detected earlier than using 12-lead ECG. The difference map derived from the group-mean isochrone maps precisely localizes the sites of disturbed conduction in the heart intraventricular conduction system

Multi-messenger observations of a binary neutron star merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ~1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of 40+8-8 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 Mo. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at ~40 Mpc) less than 11 hours after the merger by the One- Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ~10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position ~9 and ~16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta

Genetics of population exchange along the historical portuguese-spanish border

The present analysis compares the distribution of surnames by means of spatial autocorrelation analysis in the Spain–Portugal border region. The Spanish National Institute of Statistics provides a database of surnames of residents in the western Spanish provinces of Zamora, Salamanca, Cáceres, Badajoz and Huelva. The Spanish and Portuguese patterns of surname distribution were established according to various geographic axes. The results obtained show a low diversity of surnames in this region – especially in the centre – which can be explained by the absence of any major geographic barriers, with the exception of the mountain ranges between hydrographic basins, and by the presence of traditional roads that have existed since Roman times. The latter have resulted in a constant migratory flow over short–median distances, which, as can be deduced from the surnames, fits two north/south territorial axes running parallel to the border between Spain and Portugal. The distribution patterns of Portuguese and Spanish surnames differ with regard to their frequencies in the five provinces studied, which can be attributed to their respective historical, economic and social conditions. It is concluded that the border delimiting these two countries has affected the migratory flow, thereby conditioning the demographic and genetic structure of the western Spanish regions

Cambio de soberanía y migración premarital en Olivenza (España)

El sistema de cruzamientos de una población determina su estructura genética, ya que de aquél dependerá que los genes de una generación persistan en la siguiente. La elección de cónyuge está condicionada principalmente por factores socioculturales y geográficos; la existencia de barreras políticas constituye un caso particular. Con el propósito de analizar si la modificación de una frontera nacional puede haber influido sobre el sistema marital, se ha considerado una localidad de Olivenza situada al suroeste de la capital española de Badajoz, entre España y Portugal, que fue transferida de dominio en 1801. A partir de la información que se extrae de los 3774 matrimonios celebrados por el rito católico entre 1750 y 1850, se cuantifica la migración premarital para cada sexo por separado, antes y después del cambio de frontera. Se pone de relieve la influencia de ese factor político sobre el patrón de migración interpoblacional