Aportación al estudio de las cuevas naturales de ocupación romana en Murcia

En el transcurso de excavaciones y prospecciones sobre cuevas sepulcrales eneolíticas en Murcia, suele ser frecuente hallar un primer nivel ibero-romano muy disperso y poco definido. La amplitud cronológica y la escasez de estos materiales es considerable, por lo que se ha tratado el tema de forma aislada y referida a momentos ibéricos principalmente. (...

Correction to: Incidence and Risk Factors for Cholelithiasis After Bariatric Surgery

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Perceptions of primary teachers on digital didactic materials

En este artículo se analizan las percepciones del profesorado de quinto y sexto de educación Primaria en torno a la valoración, uso y formación del profesorado sobre Materiales Didácticos Digitales (en adelante MDD). Para ello se han realizado entrevistas semiestructuradas a docentes de tres Comunidades Autónomas (Galicia, Canarias y Valencia). En este trabajo de corte cualitativo los resultados manifiestan que el profesorado considera necesario utilizar en las aulas este tipo de recursos ya que están muy presentes en la vida cotidiana del alumnado. Asimismo, abogan por la creación de sus propios materiales con el fin de adaptarlos a las características particulares del grupo-clase, proporcionando una propuesta de enseñanza y aprendizaje contextualizada. Como principales dificultades en el diseño de materiales digitales, los docentes señalan la corta vida útil que poseen los MDD ya que continuamente deben ser actualizados, la cantidad de tiempo que necesitan para elaborarlos, así como limitaciones técnicas para conseguir un recurso final atractivo, coherente y funcional. Estamos ante un trabajo complejo por lo que es preciso seguir indagando en las perspectivas del profesorado en la creación y uso de los MDD en educación PrimariaThis article discusses the perceptions of fifth and sixth Primary school teachers about the assessment, use and training of teachers on Digital Didactic Materials (hereinafter MDD). For this purpose, semi-structured interviews have been conducted with teachers from three Autonomous Communities (Galicia, Canarias and Valencia). In this qualitative work the results show that teachers consider it necessary to use this type of resources in the classroom since they are very present in the daily life of the students. They also advocate the creation of their own materials in order to adapt them to the particular characteristics of the group-class, providing a proposal of contextualized teaching and learning. As major difficulties in the design of digital materials, teachers point to the short lifespan of MDD as they must be continuously updated, the amount of time they need to develop them as well as technical limitations to achieve an attractive, coherent and functional end resource. We are dealing with complex work, so there is a need to continue to investigate the perspectives of teachers in the creation and use of MDD in Primary Educatio

Spain: Underwater Exploration on a Narrow Continental Shelf

In spite of Spain’s long coastline (nearly 8000 km) and its well-established tradition in underwater archaeology, the prehistoric settlement of the continental shelf is practically unknown with very few finds. Underwater research has focused on naval archaeology and, until very recently, no attempt had been made to look for prehistoric underwater sites. In the past decade,new research projects have been launched to explore selected areas on the Cantabrian shelf and offshore of Gibraltar. This chapter summarises the currently available evidence of submerged prehistoric archaeology and the preliminary results of these new project

Physical exercise, fitness and dietary pattern and their relationship with circadian blood pressure pattern, augmentation index and endothelial dysfunction biological markers: EVIDENT study protocol

Background: Healthy lifestyles may help to delay arterial aging. The purpose of this study is to analyze the relationship of physical activity and dietary pattern to the circadian pattern of blood pressure, central and peripheral blood pressure, pulse wave velocity, carotid intima-media thickness and biological markers of endothelial dysfunction in active and sedentary individuals without arteriosclerotic disease. Methods/Design Design: A cross-sectional multicenter study with six research groups. Subjects: From subjects of the PEPAF project cohort, in which 1,163 who were sedentary became active, 1,942 were sedentary and 2,346 were active. By stratified random sampling, 1,500 subjects will be included, 250 in each group. Primary measurements: We will evaluate height, weight, abdominal circumference, clinical and ambulatory blood pressure with the Radial Pulse Wave Acquisition Device (BPro), central blood pressure and augmentation index with Pulse Wave Application Software (A-Pulse) and SphymgoCor System Px (Pulse Wave Analysis), pulse wave velocity (PWV) with SphymgoCor System Px (Pulse Wave Velocity), nutritional pattern with a food intake frequency questionnaire, physical activity with the 7-day PAR questionnaire and accelerometer (Actigraph GT3X), physical fitness with the cycle ergometer (PWC-170), carotid intima-media thickness by ultrasound (Micromax), and endothelial dysfunction biological markers (endoglin and osteoprotegerin). Discussion: Determining that sustained physical activity and the change from sedentary to active as well as a healthy diet improve circadian pattern, arterial elasticity and carotid intima-media thickness may help to propose lifestyle intervention programs. These interventions could improve the cardiovascular risk profile in some parameters not routinely assessed with traditional risk scales. From the results of this study, interventional approaches could be obtained to delay vascular aging that combine physical exercise and diet

MEGARA, the R=6000-20000 IFU and MOS of GTC

MEGARA is the new generation IFU and MOS optical spectrograph built for the 10.4m Gran Telescopio CANARIAS (GTC). The project was developed by a consortium led by UCM (Spain) that also includes INAOE (Mexico), IAA-CSIC (Spain) and UPM (Spain). The instrument arrived to GTC on March 28th 2017 and was successfully integrated and commissioned at the telescope from May to August 2017. During the on-sky commissioning we demonstrated that MEGARA is a powerful and robust instrument that provides on-sky intermediate-to-high spectral resolutions R_(FWHM) ~ 6,000, 12,000 and 20,000 at an unprecedented efficiency for these resolving powers in both its IFU and MOS modes. The IFU covers 12.5 x 11.3 arcsec2 while the MOS mode allows observing up to 92 objects in a region of 3.5 x 3.5 arcmin^(2) . In this paper we describe the instrument main subsystems, including the Folded-Cassegrain unit, the fiber link, the spectrograph, the cryostat, the detector and the control subsystems, and its performance numbers obtained during commissioning where the fulfillment of the instrument requirements is demonstrated

Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic

This study aimed to describe the change in surgical practice and the impact of SARS-CoV-2 on mortality after surgical resection of colorectal cancer during the initial phases of the SARS-CoV-2 pandemic