S isotopes on gypsum of the Oncala Group: evidence for marine influence in Berriasian carbonate-evaporite deposits of the Cameros Basin (La Rioja-Soria)

Comunicación presentada al IX Congreso Geológico de España, Huelva, septiembre 2016.[ES] Discriminar si el origen de las salmueras en las que precipitaron numerosas sucesiones evaporíticas era marino o continental puede resultar complicado usando exclusivamente criterios sedimentológicos si no contienen fósiles diagnósticos. Éste es el caso de los depósitos carbonático-evaporíticos laminados del Gr. Oncala (Berriasiense, cuenca de Cameros oriental), formados en extensos cuerpos de agua someros. En este trabajo se busca determinar el origen de la salmuera en la que se formaron estos sedimentos mediante el análisis de las composiciones del δ34S de los yesos preservados en la unidad. Los valores de δ34S de entre +18,5‰V-CDT y +21,8‰V-CDT (media de +20,5‰V-CDT) de los yesos del Gr. Oncala coinciden con la signatura isotópica de los sulfatos precipitados a partir de agua marina de edad berriasiense de acuerdo con las curvas globales más recientes (≈ +17 - +20‰V-CDT), lo que sugiere que la principal fuente de sulfato en estos cuerpos de agua procedía de aportes de agua marina, en lugar del reciclaje de evaporitas triásicas como se había propuesto anteriormente. El reconocimiento de influencia marina en estos cuerpos de agua permite clasificarlos como salinas costeras.[EN] Determining if the origin of the brine in which an evaporitic succession precipitated was marine or continental by analysing only sedimentological criteria may be difficult if it does not contain diagnostic fossils. This is the case of the laminated carbonate-evaporite deposits of the Oncala Gr (Berriasian, Cameros Basin), which were accumulated in shallow water bodies. The aim of this work is to interpret the origin of the brine in which these sediments were formed by analysing the δ34S compositions of the gypsum preserved in this unit. Gypsum δ34S values between +18,5‰V-CDT and +21,8‰V-CDT (mean value of +20,5‰V-CDT) in the Oncala Gr coincide with the isotopic signature of the sulphates precipitated in Berriasian seawater according to the most recent global curves (≈ +17 - +20‰V-CDT), which suggests that the main sulphate source in the water bodies was marine water, instead of the recycling of Triassic evaporites as previously interpreted. The recognition of marine influence in these water bodies allows us to classify them as coastal salinas.Este trabajo ha sido financiado por los proyectos de investigación CGL2011-22709 y CGL2014-52670-P.Peer reviewe

Aplasia parcial congénita de arco posterior de atlas.

Los defectos de arco posterior de C1 son anomalías raras pero bien documentadas en la bibliografía, la mayoría de los casos son asintomáticos pero existen casos publicados de mielopatía y tetraparesia transitoria asociadas a defectos de arco posterior de atlas. Se presentan dos casos: una mujer de 31 años que presentó cérvico-braquialgia secundaria a accidente de tráfico en la que se detectó aplasia parcial de arco posterior de atlas que un año después continúa con dolor y un paciente de 28 años que sufrió accidente de tráfico en la que se detectó aplasia parcial de arco posterior de atlas. Se realiza una revisión bibliográfica.Partial aplasia of posterior arch of the atlas are rare but well documented anomalies, most cases are asymp- tomatic but cases of myelopaty and quadraparesis associa- ted to defects of posterior arch of the atlas have been publis- hed in the past. Case 1: female, 31 years old, suffered traffic accident with neck and upper limb pain. Partial aplasia of posterior arch to the atlas was detected in X-Rays, at the moment the patient continues with neck pain. Case 2: female 28 years old who referred neck pain after traffic accident, partial aplasia of posterior arch of the atlas was detected. Bibliographic review

Depositional depth of laminated carbonate deposits: Insights from the lower Cretaceous Valdeprado formation (Cameros Basin, Northern Spain)

The Lower Cretaceous (Berriasian) Valdeprado Formation (Cameros Basin, northern Spain) contains more than 900 m of laminated carbonates and pseudomorphs after sulfates. Traditionally, many sedimentary packages of different ages and lithologies have been interpreted as deep-water deposits based essentially on the abundance of laminations and the absence of subaerial exposure features. In contrast, the Valdeprado Formation provides an example of a shallow-water deposit dominated by laminations with scarce evidence of subaerial exposure, and gives criteria to solve the challenge of distinguishing shallow-water and deep-water, ancient laminated deposits. The two most abundant facies all along the Valdeprado Formation are: a) parallel-laminated limestone, formed by alternating carbonate mudstone and calcite and quartz pseudomorphs after displacive gypsum, and b) graded-laminated limestone, consisting of quartz, mica, ostracodes, and pseudomorphs after detrital gypsum grains at the base, which changes gradually upwards to carbonate mudstone. Parallel-laminated limestone and graded-laminated limestone could have been deposited in either deep or shallow environments as a result of salinity fluctuations driven by alternation of flooding and evaporation and by sediment resuspension processes, respectively. Subaerial exposure features, such as desiccation mudcracks, are scarce in most of the succession, except in a few meter-scale stratigraphic intervals where they are very abundant. Interestingly, in these intervals desiccation cracks are present at the tops of several successive laminae (up to 25 mudcracked laminae per meter of deposit), indicating that, at least during those periods of time, deposition occurred in shallow water bodies that were desiccated frequently. In the upper part of the stratigraphic section, parallel-laminated and graded-laminated limestones are associated with current-ripple and wave-ripple cross-laminated arenites, and ostracode mudstone to wackestone with centimeter-size pseudomorphs after lenticular gypsum, and abundant desiccation mudcracks and tepees, which also suggest sedimentation in shallow-water environments. Moreover, the laminated carbonates display continuous, parallel layering, and the same facies along the 40-km-long outcropping area. These deposits are directly interbedded with, and pass laterally to, siliciclastic sandy–muddy flat deposits in the western area of the basin, without clinoforms, slump structures, or slide masses in between. All of these features suggest deposition in shallow, perennial carbonate–sulfate water bodies and their peripheral mudflats, developed in a flat-bottomed basin with no marked gradients

A Discussion on Fall Detection Issues and Its Deployment: When cloud meets battery

IEEE International Conference on Cloud Computing and Big Data Analysis (3rd. 2018., Chengdu, China

Evaluation of the readability of university web pages

Readability refers to the ease of reading and understanding a text. The need to ensure the readability of Web pages is related to universal access to products and services in the information society, which aims to provide an Internet for all. This article describes a study conducted to assess the readability of textual contents of Web portals of 40 universities at the top positions in international university rankings to determine whether the best universities have readable web pages. Mathematical formulas that evaluate syntactic difficulty of text oriented to texts written in English or in Spanish were applied

Calcareous algae (dasycladales and charophytes), essential for the sedimentological interpretation of ancient coastal-lakes systems. The Barremian-Aptian Leza Fm., Cameros Basin, N Spain

Depto. de Geodinámica, Estratigrafía y PaleontologíaFac. de Ciencias GeológicasTRUEpu

‘Trapping and binding’: A review of the factors controlling the development of fossil agglutinated microbialites and their distribution in space and time

Trapping and binding of allochthonous grains by benthic microbial communities has been considered a fundamental process of microbialite accretion since its discovery in popular shallow-marine modern examples (Bahamas and Shark Bay). However, agglutinated textures are rare in fossil microbialites and, thus, the role of trapping and binding has been debated in the last four decades. Recently, renewed attention on this subject has produced new findings of fossil agglutinated microbialites (those mainly formed by ‘trapping and binding’ and analogous to modern examples), but they are still few and geologically recent (mainly post-Paleozoic) when compared to the 3.5 Gyr long record of microbialites. In order to better understand this discrepancy between modern and fossil examples, an extensive literature review is presented here, providing the first thorough database of agglutinated microbialites, which shows that all of them are formed in shallow-marine environments and most under tidal influence. In addition, a Lower Cretaceous example is described, including very diverse microbialites, each of them formed in a particular paleoenvironment. Some of these microbialites developed in grainy settings, but only those formed in marginal-marine tide-influenced environments accreted mainly by trapping and binding the surrounding grains, being analogous of modern agglutinated microbialites, and matching the environmental pattern observed in the literature database. The combination of the literature review with the case study allows to discuss the factors that control and enhance ‘trapping and binding’: a) occurrence of grains in the microbialite environment; b) frequent currents that mobilize the grains and supply them onto the microbialite surface; c) high concentration and diversity of electrolytes in the water to increase the adhesiveness of the extracellular polymeric substances (EPS) of the microbialite surface; and d) a CaCO3 saturation state not high enough to promote early and strong carbonate precipitation within EPS, which would eventually decrease its availability to adhere grains. Therefore, this review shows that the keys to solve the ‘trapping and binding’ debate may be environmental, because the conjuction of these hydrodynamic and hydrochemical parameters is preferentially achieved in shallow-marine settings and especially in those influenced by tides, at least since Mesozoic times. This explains the limited environmental and stratigraphic distribution of microbialites mainly formed by ‘trapping and binding’, and opens new ways to look, geologically and microbiologically, at this process, so often cited and yet so rare

Publicidad Y Educación Sanitaria

ResumenLa educación sanitaria y la publicidad tienen un objetivo común: influir en la conducta humana. La educación sanitaria trata de inducir conductas saludables. La publicidad, en ocasiones, propugna conductas de riesgo. Se analizan aquí los anuncios insertados en las 15 revistas de máxima tirada en España durante dos meses. En total 1.726 anuncios que podrian afectar negativamente a la salud, por el producto o servicio ofertados, o por utilizar la salud como argumento persuasivo en sus textos.Hola y Lecturas tuvieron la tasa más alta de anuncios/revista. Las bebidas alcohólicas, los alimentos y los fármacos fueron los objetos más publicitados. Y más del 50% de los anuncios argumentaron directamente con la salud o el bienestar en sus textos.Los educadores sanitarios deberían conocer y enseñar el análisis critico de la publicidad, y utilizar los anuncios como instrumento didáctico, para lograr ciudadanos capaces de distanciarse y defenderse del influjo publicitario.SummaryHealth education and advertising have a common aim: to modify human behaviour. Health education tries to induce healthy behaviours. In some occasions Publicity proposes risky behaviours.Ads appearing during a two-month period in magazines of the largest circulation in Spain are analyzed here. A total of 1,726 ads which could have a negative influence on health either because of the product or service offered or for the use of health as a persuasive argument in their text, are considered.The magazines Hola and Lecturas had the highest ratio ads/magazine. Spirits, food and drugs were the most frequently advertised products. And more than 50% of the ads used health and welfare as argument for better selling.Health educators should know and teach the critical analysis of publicity, and use advertisements as a teaching tool to enable people to see through misleading advertising

La clase encuentro en la educación superior: algunas consideraciones teóricas -metodólogicas

The teaching - learning process of higher education demands new forms of organization of the pedagogical process; Therefore, it is necessary to change the leading role of the teacher and the learner, which means that the developer and didactic developer learning concept was carried out through different organizational forms and one of them is the encounter class. The purpose of this essay is to reflect on some theoretical - methodological issues around the encounter class as a tool to achieve greater effectiveness and efficiency in the learning of university students. In its elaboration, methods of investigation of the theoretical level were used that allowed the processing of the information, the characterization of the object of investigation, to determine its theoretical and methodological foundations. In conclusion, the great importance of the encounter class in the face-to-face and blended modality in higher education is highlighted, as it contributes like no other to favor self-learning, self-evaluation, cognitive independence and personal growth in students to the extent that Appropriate procedures and skills that allow access to new knowledge.  El proceso de enseñanza – aprendizaje de la educación superior reclama de nuevas formas de organización del proceso pedagógico; por lo tanto se hace necesario el cambio en el rol protagónico del que enseña y del que aprende, lo cual trae consigo que la concepción de aprendizaje desarrollador y didáctica desarrolladora se efectué a través de diferentes formas organizativas y una de ellas es la clase encuentro. Es objetivo de este ensayo reflexionar sobre algunas cuestiones teóricas – metodológicas en torno a la clase encuentro como herramienta para lograr una mayor efectividad y eficacia en el aprendizaje de los estudiantes universitarios. En su elaboración, se emplearon métodos de investigación del nivel teórico que permitieron el procesamiento de la información, la caracterización del objeto de investigación, determinar sus fundamentos teóricos y metodológicos. Como conclusión se destaca la gran importancia que reviste la clase encuentro en la modalidad presencial y semipresencial en la educación superior, pues contribuye como ninguna otra a favorecer el autoaprendizaje, la autoevaluación, la independencia cognoscitiva  y el crecimiento personal en los estudiantes en la medida que se apropien de procedimientos y habilidades que le permitan acceder a los nuevos conocimientos