New constraints on Heavy Neutral Leptons from Super-Kamiokande data

Heavy neutral leptons are predicted in many extensions of the Standard Model with massive neutrinos. If kinematically accessible, they can be copiously produced from kaon and pion decays in atmospheric showers, and subsequently decay inside large neutrino detectors. We perform a search for these long-lived particles using Super-Kamiokande multi-GeV neutrino data and derive stringent limits on the mixing with electron, muon and tau neutrinos as a function of the long-lived particle mass. We also present the limits on the branching ratio versus lifetime plane, which are helpful in determining the constraints in non-minimal models where the heavy neutral leptons have new interactions with the Standard Model.Comment: 6 pages, 4 figures. v2: Minor changes, references added. Version accepted for publication in EPJ

Methodology to reconstruc virtual cities from the past

Postprint (published version

Employment trends in the key sectors of the Andalusian economy

The economic downturn has strongly impacted the Spanish labour market, resulting in the shedding of labour with significant differences across regions. Among them, the region of Andalusia is one of the most striking cases. Since the beginning of the crisis, the regional economy exhibited more negative changes in GDP and an uninterrupted decrease in the employment rate greater than that experienced in the country as a whole. In this context, this paper aims to provide a deeper understanding of the behaviour of the Andalusian economy focusing on analysing the region?s productive structure and how it is reflected in its labour market. To do so, the paper first presents a comparative analysis of the Andalusian economic structure between 2005 and 2010, before and during the economic crisis, based on the information provided by the corresponding Social Accounting Matrices (SAMs). Then, a shift-share analysis is carried out to analyse the effects of the evolution of productive structures on regional employment trends. The results show that there have been slight changes in the productive structure of Andalusia during 2005-2010 period and this has been reflected in a general decrease in its capacity to generate jobs. However, performance within the group of keyproductive sectors has been mixed during this time. Of those sectors, manufacturing industries and construction sector have been reduced further, whereas this capability has contracted less for the transport, warehousing and communication services and has increased for commerce services. In this point, the shift-share shows that the general economic climate negatively impacted the manufacturing industries both before and during the crisis, and this is reinforced by the sectoral influence over the complete study period and the continuing loss of specialisation. Although they are a bit more dynamic at the regional level during the crisis period, the above effects can explain the decreases in their capacities to create jobs in 2010 compared with 2005. The construction sector was hardly hit during the crisis period, exhibiting positive behaviour at the regional level during this time, with slight but positive dynamism at the regional level, making the decrease in its capacity barely lower than that observed for the manufacturing industries. Commerce is the most striking case, being the only sector, even among the strategic sectors, that exhibits good job creation performance during the crisis period. This behaviour can be explained by the modest but continuing sectoral and regional effect over the entire study period. In contrast, transport, warehousing and communication services, which was distinguished as a relevant sector with greater dynamism at the regional level during the crisis period, slightly reduced its job capacity, probably due to the simultaneous decrease in its degree of specialisation

The atlantic side of the iberian peninsula: a hot-spot of novel maternal honey bee diversity

The Iberian Peninsula harbors one the highest mitocondrial DNA (mtDNA) diversity ever reported for honey bee subspecies. This finding is explained not only by the co-occurrence of two divergent evolutionary lineages, western European (lineage M) and African (lineage A), but also by the higher variability of African and western European haplotypes. Indeed, over 36 haplotypes of western European and African ancestry, which form complex networks, have been reported for this area of the honey bee natural range. While studies on the diversity patterns of central and Mediterranean Iberian populations are abundant, the genetic composition of populations inhabiting the Atlantic side was until recently virtually unknown. Using the popular DraI test (PCR amplification and restriction of the intergenic tRNAleu-coxII region) we performed a fine scale genetic survey of the honey bee populations from Portugal. Adding to the 24 previously described African haplotypes, of which 17 are found in the Iberian Peninsula, 13 unreported haplotypes of African ancestry were found in our survey, which represent an addition of 54% of new variation. The fragment sizes ranged from approximately 800 to 1200 bp and the restriction length of the new haplotypes were very distinct from those reported in the literature. To further confirm the novelty of these haplotypes, we sequenced the aforementioned mtDNA region. Herein we present a phylogenetic analysis of these novel haplotypes

Patrón espacial de la variación molecular de Apis mellifera en Gran Canaria y la Gomera (Islas Canarias)

Las islas del Archipiélago Canario presentan condiciones ambientales variables según su altitud, latitud y longitud, lo cual influye en la distribución de los organismos. En relación con la abeja de la miel (Apis mellifera L.), estudios previas realizados por De la Rúa et a I. ( 1998) Y por Padilla-Álvarez et al. (1998), sugieren la existencia en las Islas Canarias de poblaciones que han evolucionado de una forma relativamente aislada y que se han adaptado en cada isla a unas determinadas condiciones ambientales. Las abejas canarias fueron incluí das en un sublinaje de distribución atlántica (AIII) del linaje evolutivo africano, en el cual se circunscriben las poblaciones de abejas de los Archipiélagos Maearonésicos (Islas Azores, Madeira, Islas Salvajes, Islas Canarias y Cabo Verde) y de Portugal. En el presente trabajo se presentan los resultados del estudio de la variabilidad molecular al nivel mitocondrial (ADNmt), de las poblaciones de abejas de la miel en las islas canarias de Gran Canaria y La Gomera mediante el análisis de la región intergénica del ADNmt comprendida entre los genes del ARN transferente de la leucina (ARNtleu) y la subunidad II de la citocromo oxidasa (cox2). Este marcador es adecuado para estimar la diversidad genética y los patrones de diferenciación espacial, en relación con la variedad ambiental existente en las islas de Gran Canaria y La Gomera

Exploring value differences across family firms : The influence of choosing and managing complexity

Altres ajuts: Formation of University Researchers (FPU)Stewardship is considered a distinctive feature of family firms, and it is associated with a set of values, including altruism, collectivism, trust, identification, loyalty and commitment. However, the extent to which these values actually prevail in different types of family firms has not often been explored, especially in relation to the types of complexity found in family firms. In this study, we address this gap in the literature and explore the existence of potential differences among family firms. Additionally, we investigate the possible reasons for these differences with regard to the levels of management complexity in the family firms and the processes related to such complexity, such as succession, pruning and complexity management options. We use a multiple case-study methodology involving 22 long-established family firms in northeast Spain. Based on the empirical results from our dynamic and multidimensional approach, this article primarily contributes to the existing literature by providing a conceptual model of the influence complexity has on values in family firms

Regional tourism competitiveness using the PROMETHEE approach

The competitiveness of tourism destinations is a key issue because it enables destinations to know their position with regard to their competitors. The aim of this paper is threefold: (1) to address the measurement of the competitiveness of tourism destinations at the regional level, (2) to show the suitability of using multi-criteria techniques to measure competitiveness, and (3) to apply the PROMETHEE and GAIA methods within a competitiveness study of eight tourist destinations located in the Northern Region of Portugal. The Metropolitan Area of Porto is the first in the ranking, followed by Cávado and Douro. The results of such an analysis show the comparative strengths and weaknesses of destinations, and allow them to identify their true competitors as well as those other destinations that are most similar to them.info:eu-repo/semantics/publishedVersio

Food aroma mass transport properties in renewable hydrophilic polymers

[EN] The sorption and transport properties of gliadin and chitosan films with respect to four representative food aroma components (ethyl caproate, 1-hexanol, 2-nonanone and α-pinene) have been studied under dry and wet environmental conditions. The partition coefficients (K) of the selected volatiles were also obtained using isooctane and soybean oil as fatty food simulants. The results showed that gliadin and chitosan films have very low capacities for the sorption of volatile compounds, and these capacities are influenced by the nature of the sorbate, the environmental relative humidity and the presence of glycerol as a plasticizer in the polymeric matrix. The volatile compounds also present a low partitioning in the biopolymer film/food stimulant system. Given the low levels of interaction observed with the volatiles, gliadin and chitosan films are of potential interest for the packaging of foods in which aroma is one of the most important quality attributes Highlights ► Sorption kinetics and equilibrium partitioning of food aroma compounds in bioplastics. ► Gliadin and chitosan films show low sorption and partitioning capacities of food aroma compounds. ► Sorption and diffusion depend on volatile chemical structure, film composition and moisture. ► Great potential in packaging of foods in which aroma is an important quality attribute.This research has been supported from the Spanish Ministry of Science and Innovation through the Projects AGL2006-02176, AGL2009-08776 and FUN-C-FOOD Consolider Ingenio. The authors would like to thank A.P. Mac Cabe for critical reading of the manuscript.Balaguer, MP.; Gavara Clemente, R.; Hernández Muñoz, P. (2012). Food aroma mass transport properties in renewable hydrophilic polymers. Food Chemistry. 130(4):814-820. https://doi.org/10.1016/j.foodchem.2011.07.052S814820130

The economic impact of COVID-19 on cultural tourism: the case of Mosque - Cathedral of Cordoba, Spain

This study aims to shed light on the COVID-19 pandemic effects on cultural tourism, given the economic aspects linked to heritage assets arising in cultural tourism destinations. We focus on the case of the Mosque Cathedral of Cordoba, one of the most visited sites in Spain, analysing how the economic flows generated by this monument has been affected by the outbreak through an applied linear general equilibrium model calibrated by a social accounting matrix. Results indicates that tourism and especially cultural tourism are among the hardest hit sectors during the pandemic.This is an Accepted Manuscript of an article published by ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD in Current Issues in Tourism on 16/08/2022, available online: https://doi.org/10.1080/13683500.2022.2108772