Optimización de la producción de áridos procedentes de canteras con frentes complejos: cantera de Touro, A Coruña (España)

La cantera de Touro (A Coruña) es una explotación a cielo abierto de la que se extraen anfibolitas y esquistos para su uso como árido de machaqueo. Estos materiales geológicos han sufrido una evolución metamórfica compleja, lo que dificulta su identificación y posterior separación en cantera. Por este motivo, es necesario buscar técnicas analíticas sencillas de campo y laboratorio que permitan identificar y caracterizar el material en los frentes y evaluar su calidad en relación a sus posteriores usos en obra. Con este objetivo, se identificaron las variedades litológicas presentes en los frentes de extracción y se estudió su dureza superficial, porosidad, expresada como la capacidad de absorción del agua, y velocidad de propagación de ondas P. A partir de los resultados obtenidos, se concluyó que la textura, tamaño de grano, porosidad y dureza superficial, son los mejores indicadores de la calidad de los materiales y se propone un sistema de sectorización de los frentes de explotación para un mejor aprovechamiento de los recursos geológicos y un control adecuado de la calidad del producto final en cantera

Uso de catéteres venosos de línea media en pacientes hospitalizados

In the current context in which numerous alternatives have emerged in intravenous therapy, studies are needed on the different devices available to determine which is the most suitable system in each case. The midlines arise as an alternative to the use of peripheral venous catheters and central peripheral insertion catheters. The main objective of this study is to evaluate the use of midline catheters in hospitalized patients. Method; Retrospective study of 1016 patients. We analyzed variables related to the mean time of catheter use, the incidence rate for each of the complications, the number of catheters removed and their causes.Results: 46.5% of the catheters were inserted in men (472). The average age was 65 years (SD 16.8), being the youngest of 14 and the oldest of 101 years. 40% of the catheters were channeled due to poor venous access of the patient (406), 42% for long intravenous treatment (427) and 18% for irritant treatment (183). Regarding the effectiveness of the catheters, the average time of use was 12.1 days (SD 9.4). The treatment was terminated by 854 patients, 704 (69.3%) by the end of treatment and 150 (14.8%) by death. 7.4% of patients presented complications (75). 4.4% (45) were removed due to malfunction of the catheter, 1% due to patient complications (10). 2% of the catheters were removed due to fever (20).Conclusions: The middle line catheter is a venous access device with a low complication rate, it has a average residence time of around 12 days. It is an alternative to short peripheral catheters in patients with poor vein access and offers an alternative to frequent rotations in patients with antibiotic treatments longer than 7 days.En el contexto actual en el que han surgido numerosas alternativas en terapia intravenosa, se hacen necesarios estudios sobre los diferentes dispositivos disponibles para determinar cuál es el sistema más idóneo en cada caso. Las líneas medias surgen como alternativa a la utilización de catéteres venosos periféricos y catéteres centrales de inserción periférica. El objetivo de este estudio es evaluar el uso de los catéteres de línea media en pacientes hospitalizados. Método: Estudio retrospectivo de 1016 pacientes. Se analizaron variables relacionadas con el tiempo medio de utilización del catéter, la tasa de incidencias para cada una de las complicaciones, el número de catéteres retirados y sus causas. Resultados: El 40 % de los catéteres se canalizó por mal acceso venoso del paciente (406), el 42% por tratamiento intravenoso largo (427) y el 18% por tratamiento irritante (183). Respecto a la efectividad de los catéteres, el tiempo medio de utilización fue de 12.1 días (DE 9.4). Finalizaron el tratamiento 854 pacientes, 704 (69.3%) por fin de tratamiento y 150 (14.8%) por fallecimiento. Presentaron complicaciones el 7.4 % de los pacientes (75). Se retiraron por mal funcionamiento del catéter el 4.4% (45), el 1% por complicaciones del paciente (10). El 2% de los catéteres se retiró por fiebre (20). Conclusiones: El catéter de línea media es un dispositivo de acceso venoso con una baja tasa de complicaciones, presenta un tiempo medio de permanencia en torno a los 12 días. Supone una alternativa a los catéteres periféricos cortos en pacientes con mal acceso venoso y ofrece una alternativa a las rotaciones frecuentes en pacientes con tratamientos antibióticos superiores a 7 días

Integrated tool for IGCC power plants design.

Expanding economies and global warming are increasingly important and interrelated challenging issues which require cleaner and more efficient power plants designs to comply with sustainable energy demand are required. Integrated Gasification Combined Cycle (IGCC) power plants have an important role, because of their more efficient way of producing energy from fossil fuels. Actions are focused on clean power and H2 from coal, and bioproducts. So, one of the future of coal-based power generation strategies should be CO2 transport and storage in order to obtain a purer hydrogen stream. This paper proposes a methodology and supporting tool for estimating plant performance in terms of power effiency and environmental compliance and making an economic assessment for different scenarios. The technical performance has been modeled in Aspen Hysys and Aspen Plus, and models have been validated with real power plant data from ELCOGAS. Comparisons, in terms of power, emissions, efficiencies and costs between a wide variety of plant designs are presented: they enhance differences in raw material, purification units layout, and hydrogen obtention. Results obtained are examined and discussed towards future work.Peer ReviewedPostprint (author’s final draft

La villa romana de Salar (Granada). El programa escultórico en contexto arqueológico

This work was carried out within the framework of the Project HAR2017-89004-P, sponsored by the Ministerio de Economia y Competitividad of the Government of Spain and with ERDF Funds (Fondos FEDER), and the Project PID2019-105294GB-100/AEI/10.13039/501100011033, sponsored by the Ministerio de Ciencia e Innovacion of the Government of Spain and with ERDF Funds(Fondos FEDER); as well as the Research Groups HUM 143 and HUM 402 (Plan Andaluz de Investigacion of the Junta de Andalucia). We thank the City Council of Salar (Granada) for supporting the systematic archaeological excavation project in villa Salar, approved bythe Junta de Andalucia (Consejeria de Cultura y Patrimonio Historico) as a General Research Project.During the last decade various excavation campaigns have taken place at the Roman villa of Salar (Granada, Spain), located in the province Baetica. The excavated sector corresponds to the area surrounding a large peristyle of the pars urbana. Presiding over the open courtyard on one of the shorter sides is a triclinium, which in turn is associated with a nymphaeum. The ambulacrum on the opposite side of the peristyle was also excavated, uncovering a mosaic pavement with an interesting hunting scene, as well as other rooms that open onto it. In this work, the typological and iconographic study of the sculptural program recovered is carried out. The sculptural assemblage consists of 1) two nymph sculptures discovered in the nymphaeum associated with the triclinium; and 2) a Capitoline type Venus statue, which possibly decorated another fountain located on the southern side of the peristyle. The archaeological context and petrographic analyses add to the study of the pieces, as well as the analysis of this sculptural program related to nymphaea and garden environments.Durante la última década se han desarrollado varias campañas de excavación en la villa romana de Salar (Granada, España), situada en la provincial romana de la Bética. El sector excavado corresponde a la pars urbana, articulada en torno a un gran peristilo central. Presidiendo uno de los lados cortos del patio abierto se sitúa el triclinium, asociado con un nymphaeum. El ambulacrum en el lado opuesto del peristilo ha sido también excavado, descubriéndose un pavimento de mosaico con una interesante escena de caza, así como otras habitaciones que abren a este patio. En este trabajo se aborda el estudio tipológico e iconográfico del programa escultórico de la villa. El conjunto está integrado por: dos esculturas de ninfas, descubiertas en el nymphaeum asociado con el triclinium; y 2) una estatua de Venus, tipo Capitolina, que posiblemente decorase otra fuente, localizada en el lado sur del peristilo. El contexto arqueológico y los análisis petrográficos se integran en el estudio de las piezas, así como el análisis del programa escultórico del nymphaeum y el jardín circundante.Spanish Government HAR2017-89004-PERDF Funds (Fondos FEDER)Spanish Government PID2019-105294GB-100/AEI/10.13039/501100011033ERDF Funds(Fondos FEDER) Junta de Andalucia HUM 143 HUM 40

Impact of Individual Comorbidities on Survival of Patients with Myelofibrosis

Comorbidities; Myelofibrosis; SurvivalComorbilidades; Mielofibrosis; SupervivenciaComorbiditats; Melofibrosi; SupervivènciaThe comorbidity burden is an important risk factor for overall survival (OS) in several hematological malignancies. This observational prospective study was conducted to evaluate the impact of individual comorbidities on survival in a multicenter series of 668 patients with primary myelofibrosis (PMF) or MF secondary to polycythemia vera (PPV-MF) or essential thrombocythemia (PET-MF). Hypertension (hazard ratio (HR) = 4.96, p < 0.001), smoking (HR = 5.08, p < 0.001), dyslipidemia (HR = 4.65, p < 0.001) and hepatitis C virus (HCV) (HR = 4.26, p = 0.015) were most adversely associated with OS. Diabetes (HR = 3.01, p < 0.001), pulmonary disease (HR = 3.13, p < 0.001) and renal dysfunction (HR = 1.82, p = 0.037) were also associated with an increased risk of death. Multivariate analysis showed that pulmonary disease (HR = 2.69, p = 0.001), smoking (HR = 3.34, p < 0.001), renal dysfunction (HR = 2.08, p = 0.043) and HCV (HR = 11.49, p = 0.001) had a negative impact on OS. When ruxolitinib exposure was included in the model, the effect of each comorbidity on survival was modified. Therefore, individual comorbidities should be taken into account in determining the survival prognosis for patients with MF.This research was supported by an unrestricted grant from Novartis Pharmaceutical. The opinions expressed in this article are those of the authors and do not necessarily reflect those of Novartis

Detection of kerogens in sedimentary rocks by LIBS. Implications for the search for biosignatures on Mars.

Congreso Internacional dedicado a la aplicaciones de LIBSOil shale is a sedimentary rock that naturally contains organic matter. In its chemical composition presents a wide range of inorganic minerals including carbonates, silicates, etc. and kerogens – a mixture of fossil hydrocarbons. Kerogen is insoluble in normal organic solvents, being the most abundant source of organic matter on Earth [1,2]. Chemical composition of a particular kerogen differs as a function of the source microrganisms that participated to the sediment and may be classified into three categories [3]. Type I kerogen, produced by algae or eventually bacteria and is the less abundant; type II, derived from other aquatic organisms (phytoplankton and zooplankton); the most common on Earth is type III, generated from organic plant matter. To the best of our knowledge, this work demonstrates for the first time the detection of natural organic matter in different rock of oil shales with a total organic carbon content between (2.78 % and 15.06 %) using LIBS under Martian conditions. A linear correlation was found between the net CN intensity and the concentration of total organic material of the samples under CO2 and Martian atmosphere. The fact that natural organic matter can be detected and characterized by LIBS in this kind of sedimentary rock – known for suggesting the existence ancient life - through its emitting species such as CN or C2 is of great relevance in astrobiology. Results presented here, may provide essential understanding on the search for biosignatures on Mars and for the development of planetary exploration strategies.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

Radiografía del empleo público en España: Realización de entrevistas y elaboración de un programa radiofónico en formato podcast por los alumnos de la Función Pública

Memoria ID-084 Ayudas de la Universidad de Salamanca para la innovación docente, curso 2020-2021

Análisis arqueométrico de tres esculturas romanas de la villa de Salar (Granada, España)

This paper shows the archaeometric study carried out on three Roman sculptures located in the Roman villa of Salar (Granada, Spain). These are two Nymphe sculptures and a Venus made of white marble. The different samples have been studied from a petrographic, mineralogical and geochemical point of view and have been compared with local marbles such as Almaden de la Plata, and foreign ones such as Pentelic, Paros and Naxos, in order to identify their origin. The data indicate that in the elaboration of two statues (one Nymphe and Venus) Pentelic marble has been used, and in the second sculpture of Nymphe is used a local marble, perhaps, from Almaden de la Plata This study is of interest since there are few archaeometric studies conducted on archaeological pieces in this area of Roman Baetica and consequently little is known about the areas of supply and commercial circuit of marbles in the Eastern sector of the South of Hispania.info:eu-repo/grantAgreement/MINECO/ Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/HAR2013-42078-P/[ES]/[Marmora. Innovaciones en el Estudio Arqueológico y Arqueométrico del Uso de los Marmora en la Baetica: Arquitectura, Escultura, Epigrafía

Enseñanza colaborativa inter-grados

Memoria ID-0120. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2017-2018

Odiel River (SW Spain), a Singular Scenario Affected by Acid Mine Drainage (AMD): Graphical and Statistical Models to Assess Diatoms and Water Hydrogeochemistry Interactions

The Odiel River (SW Spain) is one of the most cited rivers in the scientific literature due to its high pollution degree, generated by more than 80 sulphide mines’ (mostly unrestored) contamination in the Iberian Pyritic Belt (IPB), that have been exploited for more than 5000 years. Along the river and its tributaries, the physico-chemical parameters and diatoms, from 15 sampling points, were analyzed in the laboratory. Physico-chemical parameters, water chemical analysis, together with richness and Shannon–Wiener indexes were integrated in a matrix. An initial graphical treatment allowed the definition and proposal of a functioning system model, as well as the establishment of cause–effect relationships between pollution and its effects on biota. Then, the proposed model was statistically validated by factor analysis. For acidic pH waters, high values of Eh, TDS, sulphate, ∑REE and ∑Ficklin were found, while diatomologic indicators took low values. Thus, factor analysis was a very effective tool for graphical treatment validation as well as for pollution–biota interaction models’ formulation, governed by two factors: AMD processes and water balance suffered by the studied river. As a novelty, the cause–effect relationships between high barium concentration and low diversity and richness were demonstrated in the IPB, for the first time: The authors are grateful to the Departments of Biology and Geosciences of the University of Aveiro, Portugal where diatom samples were identified. The authors are grateful to the Sustainable Mining Engineering Research Group, Department of Mining, Mechanic, Energetic and Construction Engineering at the Higher Technical School of Engineering, University of Huelva, Spain for paying for the water analyses. AT Luís is funded by national funds (OE), through FCT—Fundação para a Ciência e a Tecnologia, I.P., in the scope of the framework contract foreseen in the numbers 4, 5 and 6 of the article 23, of the Decree-Law 57/2016, of 29 August, changed by Law 57/2017, of 19 Jul