Gravel bars in low-sinuosity streams (Permian and Triassic, central Spain)

The Buntsandstein sequence of the central area of ranges from a variety of fluvial facies, low in the succession, to tidal mudstones and carbonates in the youngest and most eastem areas. This paper is restricted to the conglomerates in the lowest part of the fluvial sequence. These were deposited in bar and channel systems dominated by gravelly, low-sinuosity braided streams. Their distribution reflects both the pre-existing topography and synsedimentary tectonic movements. Six main facies have been distinguished (in order of decreasing abundance): sheets of massive conglomerates, channel-fill conglomera tes, coarse-medium sandstones, lateral accretion conglomera tes. tabular cross-stratified conglomerates, fine-grained sediments. Sheets of gravels, formed as longitudinal bars, were by far the major feature ofsediment accumulation. Units of lateral accretion, if not ver y frequent, are quite important as they probably represent modifications of bars during waning stage. Two big cycles may be seen in these conglomera tes. They correspond to different physiographic models. The lower cycle was mainly formed by smaller channels and bars than was the upper cycle. The lower cycle is mainly formed by channel deposits, whilst in contrast, the upper cycle is mainly made up of longitudinal bars. The change in sedimentation may be due to tectonic movements that occurred in the basin during Buntsandstein deposition.Peer reviewe

Causal attributions in low and high academic achievement university students in the Dominican Republic

Amparo Fernández, Pontificia Universidad Católica Madre y Maestra; Pilar Arnaiz, Universidad de Murcia; Radhamés Mejía, Universidad APEC; Alfonso Barca, Universidade da CoruñaEl objetivo de este trabajo es conocer los estilos atribucionales dominantes en el alumnado de primer año de Universidad en República Dominicana y, a su vez, analizar cómo ocurren dichas atribuciones en este alumnado de rendimiento académico alto y bajo. La muestra es de 787 sujetos de los que 414 son mujeres y 373 hombres, con una media de 18,31 años y desviación típica de 1,14 y cursan distintas titulaciones académicas en universidad. Los resultados muestran que las atribuciones causales internas (a la capacidad o habilidad y esfuerzo) se asocian con el rendimiento académico alto, y poseen una alta capacidad predictiva del buen rendimiento del alumnado, facilitando la motivación de logro. Se ha comprobado, además, que son los estilos atribucionales externos (a la tarea, al profesorado y a la suerte) los que mantienen un fuerte poder predictivo sobre el rendimiento académico bajo del alumnado. Finalmente, al contrario de lo que ocurre con las atribuciones causales internas, las atribuciones externas tienden a facilitar, en buena medida, la inhibición de la motivación de aprendizaje

Pérmico continental en España

[ES] Los conocimientos que hasta el momento se poseen, indican que en España el Pérmico está representado por el «Autuniense» (Rotliegendes Inferior) en facies grises características y por formaciones rojas que son atribuidas al «Saxoniense» (Rotliegendes Superior). El Pérmico Superior sólo ha sido citado en muy escasos puntos. En general, está constituido por series detríticas, cuyo tamaño va desde la arcilla, hasta conglomerados de gruesos bloques. Frecuentemente se intercalan rocas volcánicas de diversos tipos. Su potencia es muy variable, pudiendo llegar a alcanzar espesores de más de 2.000 m. Su deposición se realiza en cuencas continentales condicionadas normalmente por la tectónica tardihercinica. Todas sus características, así como los problemas que plantea su cronoestratigrafia son muy similares a los del Pérmico de Europa Occidental.[FR] Les connaissances aujourd’hui acquisses indiquent quen Espagne, le Permien est répresente par «l’Autunien» (Rotliegendes Infericur) en facies gris characteritiques et par des formations rouges atribuées au «Saxonien» (Rotliegendes Superieur). Le Permien Supericur a été identifle seulement dans quelques points. En general, les séries sont constituées par des seditnents détritiques, des les argiles juqua les conglomerats; frequentment on trouve des passées volcaniques de type divers. Sa puissance est tres variable, jusqua 2.000 metres maximum; sa deposition prend lieu dans bassins continentaux controlés normalement par la tectonique tardihercynienne. Ses characteritiques et ses problemes sont tres similaires a ceux du Permien de lEurope Occidentale.[EN] The present data show that the Spanish Permian is represented by the «Autunian» (Lower Rotliegendes) in a typical grey facies and redbeds similar to the «Saxonian» (Upper Rotliegendes). The Upper Permian has been found only in a very few points. In general it is made of detrital series, from clays to conglomerates; some volcaníc levels are found. Tickness is very variable, up to 2.000 meters. Sedimentation takes place in continental basins, tectonically con troled 1w the tardihercynian pbases. Their caracteristics and problenis are similar to the ones of Western European Permian.Peer reviewe

ICT investment in Spanish SMEs of service and retail sectors. Is it determined by managers gender?

This study investigates the role of the entrepreneur’s gender on digitalization strategies undertaken by SMEs in the service and retail sectors. Specifically, we aim at testing how the gender of the entrepreneur may affect investment in software and equipment related to information and communication technologies (ICT). We use a sample of 1,041 Spanish businesses and estimate a bivariate probit model for these two decisions, controlling for other entrepreneurial and business characteristics. Results indicate a higher probability of male entrepreneurs to invest in software and ICT equipment, as compared to women. Furthermore, we find that entrepreneurial risk-taking and business’ innovation capabilities are important drivers for engaging in these two digitalisation strategies, regardless of the gender of the entrepreneur, and that entrepreneurial proactiveness is especially important for women entrepreneurs, since the positive impact of entrepreneurial proactiveness on the probability to engage in digitalisation strategies is stronger in women-led businesses.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Perlecan controls neurogenesis in the developing telencephalon

BACKGROUND: Perlecan is a proteoglycan expressed in the basal lamina of the neuroepithelium during development. Perlecan absence does not impair basal lamina assembly, although in the 55% of the mutants early disruptions of this lamina conducts to exencephaly, impairing brain development. The rest of perlecan-null brains complete its prenatal development, maintain basal lamina continuity interrupted by some isolated ectopias, and are microcephalic. Microcephaly consists of thinner cerebral walls and underdeveloped ganglionic eminences. We have studied the mechanisms that generate brain atrophy in telencephalic areas where basal lamina is intact. RESULTS: Brain atrophy in the absence of perlecan started in the ventral forebrain and extended to lateral and dorsal parts of the cortex in the following stages. First, the subpallial forebrain developed poorly in early perlecan-null embryos, because of a reduced cell proliferation: the number of cells in mitosis decreased since the early stages of development. This reduction resulted in a decreased tangential migration of interneurons to the cerebral cortex. Concomitant with the early hypoplasia observed in the medial ganglionic eminences, Sonic Hedgehog signal decreased in the perlecan-null floor plate basal lamina at E12.5. Second, neurogenesis in the pallial neuroepithelium was affected in perlecan deficient embryos. We found reductions of nearly 50% in the number of cells exiting the cell cycle at E12–E13. The labeling index, which was normal at this age, significantly decreased with advancing corticogenesis. Moreover, nestin(+ )or PCNA(+ )progenitors increased since E14.5, reaching up to about 150% of the proportion of PCNA(+ )cells in the wild-type at E17.5. Thus, labeling index reduction together with increased progenitor population, suggests that atrophy is the result of altered cell cycle progression in the cortical progenitors. Accordingly, less neurons populated the cortical plate and subplate of perlecan-null neocortex, as seen with the neuronal markers β-tubulin and Tbr1. CONCLUSION: As a component of the basal lamina, perlecan both maintains this structure and controls the response of the neuroepithelium to growth factors. Less mitotic cells in the early medial ganglionic eminences, and impaired cell cycle progression in the late neocortex, suggests insufficient recruitment and signaling by neurogenic morphogens, such as SHH or FGF2

Periodismo y Ciudadanía Plural: problemas, rutinas y retos

Several researches bring about by the group Women and Mass Culture Feminary, from the Department of Journalism and Communication Sciences at University of Barcelona (UAB), have driven attention to the fact that at the Spanish press, since the transition to democracy after several decades of dictatorship, some routines of the news making process persist and avoid newspapers to properly inform about important social transformations occurred since the begging of the democratic process in Spain. It is argued that the press is stuck in an androcentric point of view or way of scoping reality, restrictive to adult men related to power centres of politics, economics and cultural life. In addition, it is also argued that this preferred attention to power centres has become more abstract; more dehumanized moving far away from regular people

Yessotoxin, a promising therapeutic tool

Yessotoxin (YTX) is a polyether compound produced by dinoflagellates and accumulated in filter feeding shellfish. No records about human intoxications induced by this compound have been published, however it is considered a toxin. Modifications in second messenger levels, protein levels, immune cells, cytoskeleton or activation of different cellular death types have been published as consequence of YTX exposure. This review summarizes the main intracellular pathways modulated by YTX and their pharmacological and therapeutic implicationsThe research leading to these results has received funding from the following FEDER cofunded grants. From CDTI and Technological Funds, supported by Ministerio de Economía y Competitividad, AGL2012-40185-CO2-01, AGL2014-58210-R; Consellería de Cultura, Educación e Ordenación Universitaria, GRC2013-016; CDTI under ISIP Programme, Spain, IDI-20130304 APTAFOOD; and the European Union’s Seventh Framework Programme managed by REA—Research Executive Agency (FP7/2007–2013) under grant agreement 312184 PHARMASEAS

Spongionella secondary metabolites protect mitochondrial function in cortical neurons against oxidative stress

Accepted: 8 January 2014 This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Acknowledgments The research leading to these results has received funding from the following FEDER cofunded-grants: From Ministerio de Ciencia y Tecnología, Spain: AGL2009-13581-CO2-01, AGL2012-40485-CO2-01. From Xunta de Galicia, Spain: 10PXIB261254 PR. From the European Union’s Seventh Framework Programme managed by REA—Research Executive Agency (FP7/2007–2013) under grant agreement Nos. 265896 BAMMBO, 265409 µAQUA, and 262649 BEADS, 315285 CIGUATOOLS and 312184 PHARMASEA. From the Atlantic Area Programme (Interreg IVB Trans-national): 2009-1/117 Pharmatlantic. MER thanks the Government of the Arab Republic of Egypt for a PhD Scholarship. MJ thanks the Scottish University Life Science Alliance which provided funding to set up the compound library.Peer reviewedPublisher PD

Improvement of the Electrical Regulation of a Microhydropower System using aWater Management Tool

[EN] The constant growth of the population and the increase in the need for resources create challenges, and it is necessary to seek more sustainable solutions to manage them more adequately and efficiently. In recent years, the use of renewable energy systems has increased, in which water distribution networks are no exception. Pumps operating as turbines (PATs) are an innovative solution with enormous potential to achieve these sustainable development goals. As a means of improving sustainability, in this research, an optimized regulation tool is developed to maximize the recovered energy in the system using PATs in water distribution networks (WDNs). This is possible due to the use of empirical methods for the estimation of the characteristic curves. The tool was developed in Simulink MATLAB, in which the optimization and iterative steps were carried out. It is based on the intended methodology and applied to a real case study. When implementing the tool, the results given are the hydraulic-electrical regulation strategies, where the number of machines working, the frequency inverter setpoint, and the degree of opening of the pressure-reducing valves (PRV) is defined for any given time. After the analysis in the case study, the tool recovered 28% of the supplied energy in the system. This daily recovered energy was above 7160 kWh, and it contributed to an increase in efficiency and sustainability.Grant PID2020-114781RA-I00 was funded by MCIN/AEI/10.13039/501100011033.García Espinal, MA.; Conejos, P.; López Jiménez, PA.; Pérez-Sánchez, M. (2022). Improvement of the Electrical Regulation of a Microhydropower System using aWater Management Tool. Water. 14(10):1-15. https://doi.org/10.3390/w14101535115141