160 research outputs found

    Effects of ethylimidazolium nitrate and the aluminium nitrate salt mixtures on germination of three forest species

    Get PDF
    This article belongs to the Proceedings of The 23rd International Electronic Conference on Synthetic Organic ChemistryIonic liquids are synthetic compounds with melting temperatures lower than 100 °C and with high ability of modification of their physical and chemical properties from changes in their chemical structure. Although the number of applications in the last years has been continuously increasing, their effects on the different terrestrial ecosystems have been scarcely studied. In this work, the effects of the ionic liquid ethylammonium nitrate (EAN), the aluminum nitrate salt (Al(NO3)3), and the saturated mixture of both components on the germination of three forest species were studied. Different doses, from 0% to 10% weight, of the three treatments were applied at seeds of three different forest species (Eucalyptus globulus Labill, Pinus radiata D. Don, and Pinus sylvestris L.) and the germination of these seeds was continuously monitored for 35 days. The results showed that the addition of ionic liquid, salt, and mixture provoke the reduction of germination for all the species. Concentrations of 5% and higher incite the total inhibition of the germination of all species for all the treatments, with the EAN treatment being the most harmfulThis work was supported by Xunta de Galicia through GRC ED431C 2016/001 and IN607A 2017/6 projects, the Spanish Ministry of Science, Innovation and Universities and the European Regional Development Fund (ERDF) in the framework of the FIRESEVES (AGL2017-86075-C2-2-R) project and the Competitive Reference BIOAPLIC (ED431C2019/07), the Strategic Researcher Cluster BioReDeS (ED431E 2018/09), and the Galician Network of Ionic Liquids (ReGaLIs) ED431D 2017/06. J. J. Parajó gives thanks for funding support from the I2C Postdoctoral Program of Xunta de GaliciaS

    Radiografía de un castro de la Edad del Hierro: arqueología no invasiva en el asentamiento de Villasviejas del Tamuja (Botija, Cáceres)

    Get PDF
    The aim of this paper is to present the progress that has been made in the study of the hillfort of Villasviejas del Tamuja (Botija, in the province of Cáceres), based on a combination of non-destructive techniques. The possibility of cross-referencing the results obtained with different geophysical methods (magnetometry, georadar and electric tomography) raises the opportunity to formulate a reliable diagnosis on the spatial organization of this site. The most relevant results are described, and their contribution to a general interpretation of the urban structure and morphology of domestic spaces is analyzed. This information is contrasted with previously available excavation data and its framing is analysed within the existing knowledge on this type of settlements. In addition, elements of interest about the diachronic evolution of the site are added, which are relevant in relation to the hypotheses formulated about the impact of the Roman conquest. Ultimately, the potential of this type of research strategy for the study and revaluation of large and complex archaeological zones is considered.El objetivo de este trabajo es proporcionar un primer avance del estudio del castro de Villasviejas del Tamuja (Botija, provincia de Cáceres) a partir de la combinación de técnicas no destructivas. La posibilidad de cruzar los resultados obtenidos con diversos métodos geofísicos (magnetometría, georradar y tomografía eléctrica) plantea la oportunidad de formular un diagnóstico fiable sobre la organización espacial de este enclave.Se describen los resultados más relevantes, y se valora su aportación para una interpretación general de la estructura urbana y la morfología de los espacios domésticos. Esta información es contrastada con los datos de excavación previamente disponibles, y se analiza su encuadre dentro del conocimiento actualmente existente sobre este tipo de asentamientos. Asimismo, se añaden elementos de interés acerca de la evolución diacrónica del sitio, que son relevantes en relación con las hipótesis formuladas acerca del impacto de la conquista romana.En última instancia se pondera el potencial de este tipo de estrategias de investigación para el estudio y revalorización de zonas arqueológicas grandes y complejas

    Estrategia de diseño de un sistema integral de servicios de la Facultad de Ciencias de la Información

    Get PDF
    Este proyecto propone diseñar un sistema que integre la prestación de servicios que la facultad de Ciencias de la Información ofrece a PDI, PAS y estudiantes, en cuanto a la reserva de espacios, equipos e instalaciones de Laboratorios y recursos de la Facultad, así como la comunicación de todas las actividades, accesible desde múltiples plataformas (ordenador, tablet, móvil). El alcance del proyecto supone una mejora de la gestión de los procesos de seguimiento de los títulos oficiales de la Facultad, en cuyas Memorias, el apartado de infraestructuras y difusión, juega un papel relevante. Esta herramienta digital favorece la gestión en línea de los recursos necesarios para la docencia online

    NRN1 Gene as a Potential Marker of Early-Onset Schizophrenia: Evidence from Genetic and Neuroimaging Approaches

    Get PDF
    Included in the neurotrophins family, the Neuritin 1 gene (NRN1) has emerged as an attractive candidate gene for schizophrenia (SZ) since it has been associated with the risk for the disorder and general cognitive performance. In this work, we aimed to further investigate the association of NRN1 with SZ by exploring its role on age at onset and its brain activity correlates. First, we developed two genetic association analyses using a family-based sample (80 early-onset (EO) trios (offspring onset ≤ 18 years) and 71 adult-onset (AO) trios) and an independent case control sample (120 healthy subjects (HS), 87 EO and 138 AO patients). Second, we explored the effect of NRN1 on brain activity during a working memory task (N-back task; 39 HS, 39 EO and 39 AO; matched by age, sex and estimated IQ). Different haplotypes encompassing the same three Single Nucleotide Polymorphisms(SNPs, rs3763180 rs10484320 rs4960155) were associated with EO in the two samples (GCT, TCC and GTT). Besides, the GTT haplotype was associated with worse N-back task performance in EO and was linked to an inefficient dorsolateral prefrontal cortex activity in subjects with EO compared to HS. Our results show convergent evidence on the NRN1 association with EO both from genetic and neuroimaging approaches, highlighting the role of neurotrophins in the pathophysiology of SZ

    Cyclic potentiodynamic polarization on titanium alloys anodizing in alkaline solutions

    Get PDF
    Titanium alloys are used in different industries such as biomedical, aerospace, aeronautic, chemical, and naval. Those industries have high requirements with few damage tolerances. The aim of this work was to study the corrosion behavior of titanium alloys anodizing and non-anodizing in alkaline (KOH and NaOH) solutions, exposed in 3.5%wt. NaCl and 3.5% wt. H2SO4 solutions at room temperature using cyclic potentiodynamic polarization (CPP) according to standards in order to obtain electrochemical parameters as the passivation range (PR), corrosion type, passive layer persistence, corrosion potential (Ecorr), and corrosion rate. The alloy Ti Beta-C anodized presented better corrosion resistance than Ti-6Al-4V in both media. The smallest corrosion rate is presented in Beta-C samples (4.72 E-8 A/cm2) and the highest corrosion rate is CP2 (1.61 E-5 A/cm2

    Long-term treatment with chaethomellic acid A reduces glomerulosclerosis and arteriolosclerosis in a rat model of chronic kidney disease

    Get PDF
    The high prevalence of end-stage renal disease emphasizes the failure to provide therapies to effectively prevent and/or reverse renal fibrosis. Therefore, the aim of this study was to evaluate the effect of long-term treatment with chaethomellic acid A (CAA), which selectively blocks Ha-Ras farnesylation, on renal mass reduction-induced renal fibrosis. Male Wistar rats were sham-operated (SO) or subjected to 5/6 renal mass reduction (RMR). One week after surgery, rats were placed in four experimental groups: SO:SO rats without treatment (n = 13); SO + CAA: SO rats treated with CAA (n = 13); RMR:RMR rats without treatment (n = 14); and RMR + CAA:RMR rats treated with CAA (n = 13). CAA was intraperitoneally administered in a dose of 0.23 μg/kg three times a week for six months. Renal fibrosis was evaluated by two-dimensional ultrasonography and histopathological analysis. The kidneys of the RMR animals treated with CAA showed a significantly decrease in the medullary echogenicity (p < 0.05) compared with the RMR rats that received no treatment. Glomerulosclerosis and arteriolosclerosis scores were significantly lower (p < 0.001) in the RMR + CAA group when compared with the RMR group. There were no significant differences in interstitial fibrosis, interstitial inflammation and tubular dilatation scores between the RMR + CAA and RMR groups. These data suggest that CAA can be a potential future drug to attenuate the progression of chronic kidney disease.This work is supported by : European Investment Funds by FEDER/COMPETE/POCI– Operacional Competitiveness and Internacionalization Programme, under Project POCI-01-0145-FEDER-006958 and National Funds by FCT - Portuguese Foundation for Science and Technology, under the project UID/AGR/04033/2013; and by European Investment Funds by FEDER/COMPETE/POCI– Operacional Competitiveness and Internacionalization Programme, under Project POCI-01-0145-FEDER-016728 and National Funds by FCT - Portuguese Foundation for Science and Technology, under the project PTDC/DTP-DES/6077/2014.info:eu-repo/semantics/publishedVersio

    Villasviejas del Tamuja (Botija, Cáceres). Desvelamiento del paisaje urbano de un Castro de la Edad del Hierro

    Get PDF
    Editor: Victorino Mayoral Herrera.El objetivo de la presente monografía es dar a conocer a la comunidad científica y al conjunto de la ciudadanía, los resultados de las últimas investigaciones desarrolladas en el castro de Villasviejas del Tamuja (Botija, provincia de Cáceres). Se reúnen en ella las aportaciones de un amplio grupo de profesionales que han trabajado de manera coordinada durante tres años en este sitio arqueológico emblemático de la Protohistoria peninsular. Se trata, no obstante, del fruto de una colaboración científica mucho más larga, cuyos ejes temáticos responden a dos grandes líneas de investigación potenciadas desde el Instituto de Arqueología-Mérida (Consejo Superior de Investigaciones Científicas/Junta de Extremadura, IAM en lo sucesivo). Por un lado, el estudio de las comunidades de la Segunda Edad del Hierro y el impacto provocado por la conquista romana, con un especial énfasis en su dimensión territorial y socioeconómica. Por otro, la experimentación y aplicación de los métodos no destructivos en Arqueología, como una vía para obtener un conocimiento extensivo de las transformaciones en paisajes y asentamientos a través del tiempo.Esta monografía ha sido realizada dentro del proyecto de investigación Desarrollo de métodos de mínima invasión para la revalorización socio-cultural de zonas arqueológicas (Ref. IB16150) financiado por la Consejería de Economía, Comercio e Innovación de la Junta de Extremadura.Peer reviewe

    Effect of viral storm in patients admitted to intensive care units with severe COVID-19 in Spain: a multicentre, prospective, cohort study

    Get PDF
    Background: The contribution of the virus to the pathogenesis of severe COVID-19 is still unclear. We aimed to evaluate associations between viral RNA load in plasma and host response, complications, and deaths in critically ill patients with COVID-19. Methods: We did a prospective cohort study across 23 hospitals in Spain. We included patients aged 18 years or older with laboratory-confirmed SARS-CoV-2 infection who were admitted to an intensive care unit between March 16, 2020, and Feb 27, 2021. RNA of the SARS-CoV-2 nucleocapsid region 1 (N1) was quantified in plasma samples collected from patients in the first 48 h following admission, using digital PCR. Patients were grouped on the basis of N1 quantity: VIR-N1-Zero ([removed]2747 N1 copies per mL). The primary outcome was all-cause death within 90 days after admission. We evaluated odds ratios (ORs) for the primary outcome between groups using a logistic regression analysis. Findings: 1068 patients met the inclusion criteria, of whom 117 had insufficient plasma samples and 115 had key information missing. 836 patients were included in the analysis, of whom 403 (48%) were in the VIR-N1-Low group, 283 (34%) were in the VIR-N1-Storm group, and 150 (18%) were in the VIR-N1-Zero group. Overall, patients in the VIR-N1-Storm group had the most severe disease: 266 (94%) of 283 patients received invasive mechanical ventilation (IMV), 116 (41%) developed acute kidney injury, 180 (65%) had secondary infections, and 148 (52%) died within 90 days. Patients in the VIR-N1-Zero group had the least severe disease: 81 (54%) of 150 received IMV, 34 (23%) developed acute kidney injury, 47 (32%) had secondary infections, and 26 (17%) died within 90 days (OR for death 0·30, 95% CI 0·16–0·55; p<0·0001, compared with the VIR-N1-Storm group). 106 (26%) of 403 patients in the VIR-N1-Low group died within 90 days (OR for death 0·39, 95% CI 0·26–0·57; p[removed]11 página
    corecore