The validity of Rhetorical categories in audiovisual culture

Los ámbitos de la comunicación, la sociedad y el arte han evolucionado como consecuencia de los cambios culturales y del progreso de las nuevas tecnologías. Sin embargo, en la cultura audiovisual dominante hoy, la Retórica clásica sigue vigente y ha sabido adaptarse a los nuevos modelos de comunicación que integran elementos visuales, lingüísticos y acústicos que pueden ser analizados y entendidos a través de la Retórica CulturalCommunication, Society, and Art evolve as a consequence of cultural change and new technologies’ development. However, in current audiovisual mainstream Culture, Classical Rhetoric is still useful. It adapts itself to new communicative models incorporating visual, linguistic, and acoustic elements, which can be studied and understood through Cultural RhetoricEste trabajo es resultado de la investigación realizada en el proyecto METAPHORA (Referencia FFI2014-53391-P), proyecto de investigación financiado por la Secretaría de Estado de Investigación, Desarrollo e Innovació

Intertextualidad, interdiscursividad y retórica cultural

Intertextualidad, interdiscursividad y retórica cultura

La teoría literaria de Amado Alonso

Tesis doctoral inédita leída en la Universidad Autónoma de Madrid. Facultad de Filosofía y Letras, Departamento de Lingüística, Lógica, e Historia y Filosofía de la Ciencia. Fecha de lectura: 21-6-9

Perforación y voladura de rocas en minería.

Esta publicación viene a cubrir un vacío existente en la bibliografía disponible en lengua española y relativa a las actividades de perforación y de voladura en el ámbito de las explotaciones mineras. Con un lenguaje claro y conciso, hace uso de una línea expositiva muy didáctica para exponer unos contenidos que abarcan las distintas técnicas y sistemas de perforación, pasando por la tipología de las diferentes clases de explosivos industriales habitualmente usados en minería, hasta las prácticas habituales y las metodologías de diseño de voladuras. La obra se completa con un extenso capítulo de medidas de protección ambiental y prevención de impactos, descrito de una forma muy práctica

On the Prediction of Upwelling Events at the Colombian Caribbean Coasts from Modis-SST Imagery

The upwelling cores on the Caribbean Colombian coasts are mainly located at the Peninsula de la Guajira and Cabo de la Aguja. We used monthly averaged Moderate Resolution Imaging Spectroradiometer (MODIS) sea surface temperature as the only information to build up a prediction model for the upwelling events. This comprised two steps: (i) the reduction of the complexity by means of the Karhunen–Loève transform and (ii) a prediction model of time series. Two prediction models were considered: (a) a parametric autoregressive-moving average (ARMA) time series from the Box–Jenkins methodology and (b) a harmonic synthesis model. The harmonic synthesis also comprised of two steps: the maximum entropy spectral analysis and a least-squares harmonic analysis on the set of frequencies. The parametric ARMA time series model failed at the time of prediction with a very narrow range, and it was quite di cult to apply. The harmonic synthesis allowed prediction with a horizon of six months with a correlation of about 0.80. The results can be summarized using the time series of the weights of the di erent oscillation modes, their spatial structures with the nodal lines, and a high confidence model with a horizon of prediction of about four months

Experimental investigation of a circulating fluidized bed reactor to capture CO2 with CaO

[EN] Calcium looping processes for capturing CO2 from large emissions sources are based on the use of CaO particles as sorbent in circulating fluidized bed (CFB) reactors. A continuous flow of CaO from an oxyfired calciner is fed into the carbonator and a certain inventory of active CaO is expected to capture the CO2 in the flue gas. The circulation rate and the inventory of CaO determine the CO2 capture efficiency. Other parameters such as the average carrying capacity of the CaO circulating particles, the temperature and the gas velocity must be taken into account. To investigate the effect of these variables on CO2 capture efficiency we employed a 6.5 m height CFB carbonator connected to a twin CFB calciner. Many stationary operating states were achieved using different operating conditions. The trends of CO2 capture efficiency measured are compared with those from a simple reactor model. This information may contribute to the future scaling up of the technology.The work was possible thanks to a contract with the companies Endesa and Hunosa and to the CaOling project funded by the European Commission FP7. N Rodríguez acknowledges a fellowship awarded by FICYT. The assistance of B González, F Fuentes and I Rodríguez during the experiments and sample analysis is also acknowledged.Peer reviewe

Zona Pellucida sperm-binding protein 3 receptor distribution during Gopc−/− globozoospermic spermatogenesis

[EN] Globozoospermia is a type of teratozoospermia characterized by round morphology of the sperm head. Gopc(-/-) infertile globozoospermic murine model has failures during spermiogenesis, such as the incorrect biogenesis of the acrosome, disorganized acroplaxome and manchette, round nuclei and spiral flagella. In this study, Western blot, RT-PCR, immunohistochemistry and immunogold were done for the localization of the acrosome protein Zona Pellucida sperm-binding protein 3 receptor (ZP3R), also called sp56, in wild type and Gopc(-/-) mice testis. The ZP3R protein was located in the acrosome and pseudo-acrosome vesicles of wild type and Gopc(-/-) mice, respectively. Also, it is distributed through the cytoplasm of the haploid spermatids only. The incorrect spermiogenesis of Gopc(-/-) mice causes a deregulation in the expression of ZP3R in the globozoospermic spermatids. Our results suggest that although the lack of GOPC causes a failure during the transport of the pre-acrosomal vesicles, the acrosome protein ZP3R is localized in the acrosome and is distributed through the cytoplasm only during spermiogenesis. Furthermore, the failure in spermiogenesis does not impair the synthesis of ZP3R and its localization in the pre-acrosomal vesicles.Mrs. C. Tobillas and Mrs. M.J. Fernández contributed to sample preparation. We thank Mrs. M.J. Aldasoro for her support in the office work. This work was supported by grants from the UPV/EHU (EHUA13/15 and UFI 11/44)

A fast version of 'CONTACT' for normal problem calculations

[EN] In its different versions, the CONTACT method developed by Prof. Kalker is the primary reference in wheel-rail contact mechanics. Despite adopting simplifications associated with the elastic behaviour of the solids and being a non-conformal contact theory, CONTACT provides precise solutions for most wheel-rail contact conditions, with lower computational and modelling costs than other numerical methods such as Finite Elements. Nevertheless, the computational cost of CONTACT is still too high for its implementation in dynamic simulation. The present work proposes a fast and accurate wheel-rail contact method for normal problems based on Kalker's CONTACT algorithm. Dissimilarly to CONTACT, the new method formulates the normal traction distribution through a suitable basis, which reduces the dimension of the problem. This method is able to faithfully reproduce the contact patch and the normal traction distribution, even when the yaw angle of the wheelset is non-zero. Results obtained with this method are compared with the ones calculated with CONTACT, and errors about 0.05% are obtained in normal contact forces, with a reduction on the computation cost between 30 and 60 times.Grant PRE2018-084067 funded by MCIN/AEI/10.13039/501100011033 and by the EU program "ESF Investing in your future". Grant PID2020-118013RB-C21 funded by MCIN/AEI/10.13039/501100011033. Grant PROMETEO/2021/046 funded by Generalitat Valenciana.Giner Navarro, J.; Gómez-Bosch, J.; Alonso, A.; Baeza González, LM. (2023). A fast version of 'CONTACT' for normal problem calculations. Wear. 530-531:1-12. https://doi.org/10.1016/j.wear.2023.205074112530-53

Bioaccumulation/bioconcentration of pharmaceutical active compounds in aquatic organisms: Assessment and factors database

There is increasing evidence that the presence of certain pharmaceuticals in the environment leads to biota exposure and constitute a potential risk for ecosystems. Bioaccumulation is an essential focus of risk assessment to evaluate at what degree emerging contaminants are a hazard both to the environment and the individuals that inhabit it. The main goals of the present review are 1) to summarize and describe the research and factors that should be taken into account in the evaluation of bioaccumulation of pharmaceuticals in aquatic organisms; and 2) to provide a database and a critical review of the bioaccumulation/bioconcentration factors (BAF or BCF) of these compounds in organisms of different trophic levels. Most studies fall into one of two categories: laboratory-scale absorption and purification tests or field studies and, to a lesser extent, large-scale, semi-natural system tests. Although in the last 5 years there has been considerable progress in this field, especially in species of fish andmolluscs, research is still limited on other aquatic species like crustaceans or algae. This revision includes >230 bioconcentration factors (BCF) and >530 bioaccumulation factors (BAF), determined for 113 pharmaceuticals. The most commonly studied is the antidepressant group, followed by diclofenac and carbamazepine. There is currently no reported accumulation data on certain compounds, such as anti-cancer drugs. BCFs are highly influenced by experimental factors (notably the exposure level, time or temperature). Field BAFs are superior to laboratory BCFs, highlighting the importance of field studies for reliable assessments and in true environmental conditions. BAF data appears to be organ, species and compound-specific. The potential impact on food web transfer is also considered. Among different aquatic species, lower trophic levels and benthic organisms exhibit relatively higher uptake of these compounds.MCIN/AEI/10.13039/501100011033/ (grant: PID2020-117641RB-I00)Consejería de Economía, Conocimiento, EmpresasUniversidad (Spanish regional Government of Andalucia)European funding from ERDF 2014–2020 program (grants B.RNM.362.UGR20 and P20_00556

Un ejemplo de contribución de la Química Analítica a la Higiene Industrial: determinación de perfluorados en la leche materna

Los contaminantes orgánicos perfluorados, presentes en numerosos objetos de nuestra vida cotidiana, forman parte de los llamados contaminantes emergentes, que empiezan a ser regulados por ley y cuyos efectos sobre los organismos y el medio ambiente aún no están bien evaluados. Estos compuestos se aplican en muchos productos industriales y domésticos por su resistencia al calor y su capacidad de repeler el agua y el aceite. La leche materna se ha utilizado como marcador biológico de la contaminación ambiental ya que, por los procesos de bioacumulación en tejido graso, muchos compuestos químicos alcanzan concentraciones fácilmente medibles en esta matriz. Dada la complejidad de la misma, y las dificultades que ofrece para su estudio desde un punto de vista analítico, este trabajo se ha centrado en la optimización y validación de una nueva y sencilla metodología analítica para la determinación de cinco compuestos perfluorados (cuatro ácidos perfluoroalquílicos (de C5 a C8) y el sulfonato de perfluorooctano) en leche materna mediante extracción por sorción sobre barras agitadoras, previa precipitación química de grasas y proteínas, y posterior análisis mediante cromatografía de líquidos de ultra-resolución acoplada a espectrometría de masas en tándem.Perfluoroalkyl compounds, present in several products of our everyday life, are part of the so-called emerging contaminants. Although they are starting to be regulated, their effects over organisms and the environment have not been well evaluated yet. Their widespread use on industrial and domestic products is due to their thermal stability and their unique ability to repel both water and oil. Breast milk has been used as biomarker of environmental pollution because several chemical compounds are bioaccumulated at quantifiable concentration levels in this fatty tissue. Due to the analytical challenge that involves this complex matrix, this work has been focused on the optimization and validation of a novel and simply analytical methodology for the determination of five perfluoroalkyl compounds (four perfluoroalkyl carboxylic acids (from C5 to C8) and perfluorooctane sulfonate) in breast milk. The analytical method involves a stir-bar sorptive extraction and analysis by UHPLC-MS/MS