1,696 research outputs found

    Strengthening move analysis methodology towards bridging the function-form gap

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    https://doi.org/10.1016/j.esp.2017.11.006Move analysis is a text analytical approach first developed by John Swales (1981) to investigate the underlying generic structure of research articles (RAs) in terms of moves-and-steps for pedagogical purposes. A widely shared aspiration of move analysts has been to identify the linguistic features characterizing the various RA moves not only in English, but also across languages. One shortcoming blocking this advancement is the lack of multilingual corpora fully annotated for their specific communicative functions in a coordinated and reliable manner. In this paper, we describe and discuss a methodology for analysing the various RA sections for their generic structure up from the step level in two languages and across a wide range of disciplines, using the discussion section as a test case for illustrating that methodology. Among the topics treated are establishing criteria for choosing a suitable sample of comparable RA discussions across the two languages, designing a model for annotating the section’s moves and steps, creating an accessible computer-assisted coding scheme, achieving good levels of inter-rater reliability, and obtaining validation from expert informants and writers. In essence, this is a methodology paper offered as a working model for other EAP researchers undertaking similar analyses in future

    Biofilm formation in spent nuclear fuel pools and bioremediation of radioactive water

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    Microbiological studies of spent nuclear fuel pools at the Cofrentes Nuclear Power Plant (Valencia, Spain) were initiated to determine the microbial populations in the pools’ water. Biofilm formation at the nuclear power plant facilities and the potential use of those microbial populations in the bioremediation of radioactive water were also studied. Biofilm formation was analyzed by immersing different austenitic stainless steel coupons (UNS S30400, UNS S30466, UNS S31600), as well as balls of stainless steel (UNS S44200) and titanium (99.9%) in a spent nuclear fuel pool (under static and dynamic conditions) for 34 months. Epifluorescence microscopy and scanning electron microscopy revealed that biofilm formed on the samples, in spite of the radioactive and oligotrophic conditions of the water. Based on standard culture methods and sequencing of 16S rDNA fragments, 57 bacteria belonging to α-, β-, and γ-Proteobacteria, Firmicutes and Actinobacteridae were identified in the biofilms. The radioactivity of the biofilm was measured using γ-ray spectrometry, which revealed that biofilms were able to retain radionuclides, especially 60Co. Using metallic materials to decontaminate radioactive water could become a new approach for bioremediation. [Int Microbiol 2005 8(3):223-230

    Definición teórica y medición del Comercio Intraindustrial

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    La interpretación teórica y medición del Comercio Intraindustrial (CII), definido como las exportaciones e importaciones simultáneas de bienes clasificados dentro de una misma categoría industrial, ha evolucionado considerablemente desde la aparición del fenómeno a finales de los cincuenta. En el presente documento se hace una revisión de las principales teorías que explican el CII vertical y horizontal, de las metodologías empleadas para medirlo y sus limitaciones.Comercio intraindustrial, Nuevas Teorías del Comercio

    Los arrabales de la Córdoba musulmana. De las fuentes escritas a la realidad arqueológica

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    We present in this report our particular visión about the knowledge situation of islamic Cordoba 's suburbs, departing from a little historiographic analysis and finishing, after explaining the facts we have nomaday thanks to the archeology, with a criticism trought of the present view.Presentamos en este artículo nuestra particular visión del estado de la cuestión sobre los arrabales de la Córdoba musulmana, partiendo de un sucinto análisis historiográfico y concluyendo, tras exponer los datos con que contamos en la actualidad gracias al rigor arqueológico, con una reflexión crítica del panorama actual.Comunicación presentada a: Jornadas Cordobesas de Arqueología Andaluza. Arqueología de Al Andalus: Los palacios islámicos. XI. 2001. Córdob

    Trazabilidad de la señal isotópica del oxígeno desde la lluvia a los espeleotemas en las cuevas de Ortigosa de Cameros (La Rioja, España)

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    [EN] A one-year monitoring survey has been carried out in La Paz and La Viña Caves in the Ortigosa de Cameros Cave System (NE Iberian Peninsula), in order to track the oxygen isotope signal from rainfall to speleothem calcite, assessing the ability of this signal to retain environmental information. Oxygen isotope signals of rainfall events, drip water —sampled every three months—, and speleothem calcite, precipitated over three-months, are compared. Water dripping follows precipitation events in winter, spring and summer, more closely in the near-surface drip points than in the deeper ones. In autumn, dripping is delayed with respect to rainfall, suggesting that water stays in the epikarst before dripping resumes after summer. This delay causes a deviation of the total drip water signal (average δ18O=−8.39‰ V-SMOW) from the rainfall signal (average δ18O=−7.41‰ V-SMOW). On the contrary, in winter the isotopic signal of drip water keeps the rainfall signal. Calcite isotopic signal (total average δ18O=−6.83‰ V-PDB) shows a small offset (0.62–0.75%) with respect to the signal predicted by drip water oxygen composition; this points to a limited kinetic effect in calcite precipitation, therefore calcite retains the signal of rainfall, especially in winter.[ES] Durante un año se han monitorizado las cuevas de La Paz y La Viña en el Sistema de Cuevas de Ortigosa de Cameros (NE de la Península Ibérica) para rastrear la señal isotópica del oxígeno desde la lluvia a la calcita espeleotémica, y así valorar la capacidad de esta señal para conservar información medioambiental. Se han comparado las señales isotópicas del oxígeno de los eventos de la lluvia, el agua de goteo (muestreada trimestralmente) y la calcita espeleotémica, precipitada también durante cada trimestre. El goteo en las cuevas responde a la precipitación en invierno, primavera y verano, más estrechamente en los puntos más próximos a la superficie que en los profundos. En otoño hay un retraso entre la lluvia y el goteo, lo que sugiere que el agua permanece por un tiempo en el epikarst, antes de que se reanude el goteo después del verano. Este retraso provoca que la señal isotópica del agua de goteo (media total de δ18O=−8.39‰ V-SMOW) se desvíe de la señal de la lluvia (media de δ18O=−7,41‰ V-SMOW). Por el contrario, en invierno la señal isotópica del agua de goteo es muy semejante a la de la lluvia. La composición isotópica de la calcita espeleotémica (media total de δ18O=−6,83‰ V-PDB) presenta un pequeño desfase (0,62–0,75%) respecto al valor que le correspondería por la composición isotópica del agua de goteo; esto indica que los efectos cinéticos durante la precipitación de la calcita son limitados, por lo que ésta conserva la señal de la lluvia, especialmente en invierno.This study was mainly funded by the CGL2009-10455/BTE research project of the Ministry of Science and Innovation and FEDER and the Análisis de Cuencas Sedimentarias Continentales, Geotransfer, PaleoQ y Gemorfología y Cambio Global research groups of the Aragón Government. We are most grateful to Ma Angeles, Sara y Juan for their invaluable help. We also thank to the Ortigosa de Cameros town hall for the cave access. The Government of La Rioja is acknowledged by the meteorological data from Villoslada de Cameros station. We are indebted to the referees for their valuable comments.Peer reviewe

    Development of a New Method for the Determination of Manganese, Cadmium, Mercury and Lead in Whole Blood and Amniotic Fluid by Inductively Coupled Plasma Mass Spectrometry

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    Environmental exposure to metals among women, revealed their adverse effects on pregnancy. During this stage, blood levels of some metals increase so research on heavy metals transference from the mother’s blood to the developing foetus is of special interest and much attention has been paid to this matter. The amniotic fluid can be considered as a valuable marker of this prenatal exposure to exogenous factors. The aim of this study was to develop a method for the simultaneous determination of Mn, Cd, Hg, and Pb in whole maternal blood and amniotic fluid by ICP-MS. Strategies were given to minimise memory effects related to mercury and two widespread digestion procedures (open-vessel and microwave-assisted) were compared. Several quality controls, such as methodological and reagent blanks, spiked samples and duplicates were used to test the goodness of the developed method. Once optimised, the method was applied for the monitoring of Mn, Cd, Hg and Pb in 15 maternal blood and amniotic fluid samples obtained at delivery after informed consent. This study establishes that heavy metals pass into and accumulate in amniotic fluid and maternal blood. Thus, mean concentrations of Mn were similar in the two biological fluids studied, 21.6 ng/mL in maternal blood and 20.5 ng/mL in amniotic fluid. Mean Cd and mercury levels in blood and amniotic fluid were 1.3 and 6.3 ng/mL and 3.4 and 3.8 ng/mL, respectively. Concentrations of Pb were 16.4 ng/mL in blood and 13.7 ng/mL in amniotic fluid. Further studies are needed to evaluate the long-term health effects derived from this exposure.Plan Propio of the University of SevilleFundación Farmacéutica Avenzoa

    Solar influence and hydrological variability during the Holocene from a speleothem annual record (Molinos Cave, NE Spain)

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    © 2015 John Wiley & Sons Ltd. We present a multi-proxy approach to reconstructing Holocene climate conditions in northeastern Spain based on an excellent correlation among the lamina thickness, colour parameters and isotope (δ18O and δ13C) variations recorded in a speleothem. An age model constructed from five U/Th dates and annual lamina counting suggests that the uppermost 14.7 cm of the MO-7 stalagmite grew between 7.2 and 2.5 ka before present but experienced a growth hiatus from 4.9 to 4.3 ka. Three spectral analysis methods were applied to 11 time series. The results reveal common solar periodicities on decennial (Gleissberg cycle) and centennial (De Vries-Suess cycle) scales. The onset of Holocene carbonate precipitation in the MO-7 stalagmite appears to be associated with a cold, wet period, whereas the hiatus and the end of growth are related to warm, dry periods. This environmental trend fits well within the regional Holocene climate.This study is a contribution to the CTM2013-48639-C2-1-R (OPERA), CGL2009–10455 and HIDROPAST (CGL2010-16376) projects (Spanish Government-European Regional Development Fund), the UZ2014-CIE-04 project (University of Zaragoza), the GA-LC-030/2011 project (Aragón Government-La Caixa) and the E–28 and S-97 research groups (Aragón Government).Peer Reviewe

    A pyrF auxotrophic mutant of Sinorhizobium fredii HH103 impaired in its symbiotic interactions with soybean and other legumes

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    Transposon Tn5-Mob mutagenesis allowed the selection of a Sinorhizobium fredii HH103 mutant derivative (SVQ 292) that requires the presence of uracil to grow in minimal media. The mutated gene, pyrF, codes for an orotidine-5´- monophosphate decarboxylase (EC 4.1.1.23). Mutant SVQ 292 and its parental prototrophic mutant HH103 showed similar Nod-factor and lipopolysaccharide profiles. The symbiotic properties of mutant SVQ 292 were severely impaired with all legumes tested. Mutant SVQ 292 formed small ineffective nodules on Cajanus cajan and abnormal nodules (pseudonodules) unable to fix nitrogen on Glycine max (soybean), Macroptitlium atropurpureum, Indigofera tinctoria, and Desmodium canadense. It also did not induce any macroscopic response in Macrotyloma axillare roots. The symbiotic capacity of SVQ 292 with soybean was not enhanced by the addition of uracil to the plant nutritive solution. [Int Microbiol 2007; 10(3):169-176

    Holocene changes in deep-water circulation of the Western Mediterranean Basin, links to North Atlantic climate variability

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    preliminary results from multicores recovered in the Minorca sediment drift, south of the Western Mediterranean Deep Water formation area, reveal changes in deep-water circulation during the last 2500 yr. Records of grain-size and SST Mg/Ca derived from G. bulloides show oscillations in deep-water current intensities that could be related to cool periods on land, i.e. the Little Ice Age, but also denote some relationship with changes in sea surface salinity likely associated with changes in continental humid conditions
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