Artículos

Permanent URI for this collectionhttps://docta.ucm.es/handle/20.500.14352/15

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Characterisation of two vineyards in Mexico based on Sentinel-2 and meteorological data
(Remote Sensing, 2024) Del Río, María Soledad; Cicuendez López-Ocaña, Víctor Manuel; Yagüe Anguis, Carlos
In Mexico, viticulture represents the second source of employment in the agricultural area after the fruit and vegetable sector. In developed countries, remote sensing is widely used for vineyard monitoring; however, this tool is barely used in the developing countries of Iberoamerica. In this research, our overall objective is to characterise two vineyards in the state of Queretaro (Mexico) using Sentinel-2 and meteorological data, specifically spectral and thermal indices. Results show that spectral indices obtained from Sentinel-2 bands have adequately characterised the phenological dynamics of the different varieties of the vineyards. The Modified Soil-Adjusted Vegetation Index (MSAVI) was adequately used to discriminate between the first stages of vineyards, while the Normalized Difference Vegetation Index (NDVI) was useful for monitoring vineyards during the rest stages of vineyards. Thermal indices have shown that the best grape varieties are those that can adapt to both cooler and warmer temperatures, have a reasonable ripening period, and can produce wines with balanced acidity and flavours. In conclusion, the combination of meteorological (including thermal indices) and remote sensing data (NDVI and MSAVI) provide information for choosing a suitable grape variety for this region.
Optimization of energy extraction from salinity gradient using full-scale pressure retarded osmosis systems with hollow fiber membrane modules
(Renewable Energy, 2026) Suárez-Alfonso, D.; Ruiz-García, A.; Khayet Souhaimi, Mohamed
Pressure-retarded osmosis (PRO) involves a high concentration solution that is circulated through a semipermeable membrane and used to draw water permeate from a lower concentration solution by osmosis. PRO is a membrane-driven process in which the chosen membrane module plays a significant role in energy harvesting. This study aims to evaluate the effect of flow rate, pressure and concentration of draw solutions (30–180 g L−1) on the performance of a full-scale PRO process and by incorporating the characteristics of a 10-inch hollow fiber membrane module from Toyobo Company Ltd. A single-stage PRO system with up to 3 membranes in series in a pressure vessel was considered, and the consumption of the pumps and energy recovery devices were taken into consideration. The results show the optimal operating conditions that maximize net power while varying the draw solution concentration and pressure and both water stream flow rates. A net power density of 2.56 W m−2 was achieved for the concentration gradient of 179.5 g L−1. The present work concludes that single-stage full-scale PRO systems would be energetically feasible, although the results obtained need to be compared with an experimental plant taking into account membrane tear and fouling.
Transition metal docking in MOF-303 for enhanced Atmospheric Water Harvesting: a multiscale simulation approach
(Microporous and Mesoporous Materials, 2026) Arjmandi, Mehrzad; Khayet Souhaimi, Mohamed; Calero, Sofia
We present a multiscale computational study on water adsorption and transport in pristine and metal-functionalized MOF-303 frameworks for Atmospheric Water Harvesting (AWH). Using Grand Canonical Monte Carlo (GCMC), Kinetic Monte Carlo (KMC), and Molecular Dynamics (MD) simulations, we evaluated the thermodynamic uptake, adsorption kinetics, and mobility of water under varying humidity. Post-synthetic metalation with Cu(I) and Ag(I) increased the hydrophilicity of the framework, with Cu@MOF-303 and Ag@MOF-303 achieving a 37 % and 27 % higher uptake and faster saturation kinetics, respectively. Density Functional Theory (DFT) calculations revealed enhanced binding energies and localized polarization effects at Cu sites, supported by electrostatic potential maps and charge redistribution analyses. Radial distribution function (RDF) analyses revealed that metalation, especially with Cu, enhances water structuring near specific adsorption sites through localized polarization and extended electronic redistribution. Reduced water diffusion in Cu@MOF-303, observed via mean square displacement (MSD) profiles, confirmed stronger confinement. Additionally, temperature-dependent desorption analyses indicated that Ag@MOF-303 offers a more favorable balance between high uptake and moderate regeneration temperatures, reinforcing its practical viability under solar-driven AWH conditions. These results underscore the potential of targeted metal docking to fine-tune MOF performance for water harvesting in low-humidity and off-grid environments.
CB1 receptors down-regulate a cAMP/Epac2/PLC pathway to silence the nerve terminals of cerebellar granule cells
(Journal of Neurochemistry, 2017) Alonso, Beatris; Bartolomé-Martín, David; Ferrero, José Javier; Ramírez-Franco, Jorge; Torres Molina, Magdalena Isabel; Sánchez-Prieto Borja, José
Cannabinoid receptors mediate short-term retrograde inhibition of neurotransmitter release, as well as long-term depression of synaptic transmission at excitatory synapses. The responses of individual nerve terminals in VGLUT1-pHluorin transfected cerebellar granule cells to cannabinoids have shown that prolonged activation of cannabinoid type 1 receptors (CB1Rs) silences a subpopulation of previously active synaptic boutons. Adopting a combined pharmacological and genetic approach to study the molecular mechanisms of CB1R-induced silencing, we found that adenylyl cyclase inhibition decreases cAMP levels while it increases the number of silent synaptic boutons and occludes the induction of further silencing by the cannabinoid agonist HU-210. Guanine nucleotide exchange proteins directly activated by cAMP (Epac proteins) mediate some of the presynaptic effects of cAMP in the potentiation of synaptic transmission. ESI05, a selective Epac2 inhibitor, and U-73122, the specific inhibitor of phospholipase C (PLC), both augment the number of silent synaptic boutons. Moreover, they abolish the capacity of the Epac activator, 8-(4-chlorophenylthio)-2'-O-methyladenosine 3',5'-cyclic monophosphate monosodium hydrate, to prevent HU-210-induced silencing consistent with PLC signaling lying downstream of Epac2 proteins. Furthermore, Rab3-interacting molecule (RIM)1α KO cells have many more basally silent synaptic boutons (12.9 ± 3.5%) than wild-type cells (1.1 ± 0.5%). HU-210 induced further silencing in these mutant cells, although 8-(4-chlorophenylthio)-2'-O-methyladenosine 3',5'-cyclic monophosphate monosodium hydrate only awoke the HU-210-induced silence and not the basally silent synaptic boutons. This behavior can be rescued by expressing RIM1α in RIM1α KO cells, these cells behaving very much like wild-type cells. These findings support the hypothesis that a cAMP/Epac/PLC signaling pathway targeting the release machinery appears to mediate cannabinoid-induced presynaptic silencing.
Multi-episodic bauxitization in a karstic and rifted setting (Early Cretaceous, South-western Iberian Basin, Spain): An interdisciplinary approach
(Sedimentary Geology, 2025) Laita, Elisa; Lorenzo, Alejandro; Horra Del Barco, Raúl De La; Muñoz García, María Belén; Yuste, Alfonso; Bauluz, Blanca; Fregenal Martínez, María Antonia
Bauxitic deposits serve as valuable sedimentary archives, offering insights into paleoclimatic, paleogeographic, and geodynamic processes over time. A multidisciplinary analysis of bauxitic deposits in the Cuenca Domain (Iberian Ranges, central Spain) aims to reconstruct their genesis in the framework of the geological evolution of this region during the Late Jurassic-Early Cretaceous rift episode. The bauxitic deposits preserve paleosol profiles that show multi-episodic processes of sedimentation, reworking, erosion, pedogenesis, and bauxitization, reflecting a landscape's dynamics that was strongly influenced by episodic tectonic activity. The presence of book-type kaolinite aggregates, ferruginous pisoids and ooids, and soil horizons provide evidence of in situ bauxitization. On the other hand, the presence of fractured pisoids and ooids, brecciated textures, and bauxitic C horizons also points to some degree of reworking. Authigenic boehmite suggests optimal conditions for bauxitization, whereas ferruginous crusts and peds at the top of the deposits point to a later ferruginization phase. A subsequent kaolinitization episode, probably driven by the infiltration of silica-rich fluids, is also recorded. By integrating stratigraphic, sedimentological, and mineralogical data, a succession of genetic stages in bauxite development has been identified, shaped by the tectonic evolution of the area. The proposed stratigraphic and pedogenetic model enhances the regional significance of the findings and enables a refined chronology of its tectonic evolution. The results highlight the potential of bauxitic materials, not only as paleoclimatic indicators but also as robust tools for reconstructing paleogeographic and tectonic conditions in complex settings where the sedimentary record is apparently homogeneous and extremely incomplete.
Photothermally heated and mesh-gridded solar-driven direct contact membrane distillation for high saline water desalination
(International Journal of Heat and Mass Transfer, 2022) Shokrollahi, Milad; Asadollahi, Mahdieh; Mousavi, Seyyed Abbas; Rajabi-ghahnavieh, Abbas; Behzadi-Sarok, Mohammad; Khayet Souhaimi, Mohamed
Photothermally heated and mesh-gridded membrane distillation (PHMD) system is proposed for desalination of high saline aqueous solutions. A triple-layered membrane, composed of a photothermal top nanofibrous layer containing polyacrylonitrile and dispersed carbon black nanoparticles and a polyvinylidene fluoride porous membrane supported on a nonwoven polyester, was prepared. A polypropylene mesh was used to hold the membrane. A 3D numerical simulation of the PHMD system was carried out by COMSOL and the appropriate length of the membrane module was determined. The effects of various operating parameters including solar radiation intensity on the permeate flux and thermal efficiency were investigated. The increase of the feed flow rate reduced both the permeate flux and the thermal efficiency due to the reduction of the residence time of the feed solution on the photothermal membrane module. In addition, the increase of the solar radiation intensity from 500 to 1100 W/m2 and the ambient temperature from 293 to 313 K resulted in a significant enhancement of the permeate flux and thermal efficiency. In general, good agreements were found between the experimental and simulated results.
Direct PCR on Tissue Samples To Detect Mycobacterium tuberculosis Complex: an Alternative to the Bacteriological Culture
(Journal of Clinical Microbiology, 2021) Lorente Leal, Víctor; Liandris, E.; Pacciarini, M.; Botelho, A.; Kenny, K.; Loyo, B.; Fernández, R.; Bezos Garrido, Javier; Domínguez Rodríguez, Lucas José; Juan Ferré, Lucía De; Romero Martínez, Beatriz
Bovine tuberculosis (bTB) is an ongoing issue in several countries within the European Union (EU). Microbiological culture is the official confirmation technique for the presence of Mycobacterium tuberculosis complex (MTBC) members in bovine tissues, but several methodological issues, such as moderate sensitivity and long incubation times, require the development of more sensitive and rapid techniques. This study evaluates the analytical and diagnostic performance, comparatively to culture, of a real-time PCR targeting the MTBC-specific IS6110 transposon using a panel of bovine tissue samples sourced from the Spanish bTB eradication campaign. Robustness and repeatability were evaluated in an inter-laboratory trial between EU National Reference Laboratories. The limit of detection with 95% confidence was established at 65 fg/reaction of purified genomic. Diagnostic sensitivity and specificity was, respectively, 96.45% and 93.66%, and the overall agreement (κ) was 0.88. Cross-reactivity was detected against two mycobacterial isolates identified as M. marinum and "M. avium subsp. hominissuis" species, and Whole Genome Sequence analysis of the latter isolate revealed an IS6110-like sequence with 83% identity. An identical IS-like element was found in other Mycobacterium avium Complex species in the NCBI nucleotide and WGS databases. Despite this finding, this methodology is considered a valuable alternative to culture and the strategy of use should be defined depending on the control or eradication programmes
Pathological and microbiological assessment of hemorrhagic septicemia in cultured juvenile Russian sturgeons (Acipenser gueldenstaedtii)
(Aquaculture Reports, 2026) De Pablo-Moreno, Javier M.; Chinchilla Rodríguez, Blanca; Blázquez-Rangel, José A.; Aradilla, Nicolás; Santos-López, Sergio; García-Saorín, Antonio J.; Rodríguez Bertos, Antonio Manuel
Aquaculture has experienced sustained growth, now surpassing capture fisheries in global production. Among cultured species, sturgeon aquaculture has likewise expanded recently, prompting increased research and surveillance of diseases affecting this taxon. In this context, fifteen farmed Russian sturgeons (Acipenser gueldenstaedtii) were submitted for pathological investigation. A comprehensive study was conducted, encompassing autopsy, histopathology, parasitology, microbiology, and antimicrobial resistance analysis. Macroscopic examination revealed ulcerative lesions on the scutes, multiorgan hemorrhages, and multifocal black lesions in the liver. Histological analysis revealed a systemic granulocytic inflammatory response with associated melanomacrophage infiltration affecting the skin, gills, liver, spleen, heart, and digestive tract. Multifocal necrosis and hemorrhages were also present, consistent with hemorrhagic septicemia in fish. Microbiological identification confirmed the presence of Aeromonas spp., Citrobacter spp., and Plesiomonas shigelloides, all known pathogens associated with this condition in sturgeons. All three genera included isolates exhibiting resistance to at least one of the three antibiotics tested, with C. braakii displaying multidrug resistance. Additionally, Flavobacterium succinicans was also detected, representing the first report of this bacterium in sturgeons associated with skin ulcers. In conclusion, this study provides a detailed characterisation of hemorrhagic septicemia in Russian sturgeons, with pathological examination proving essential for identifying systemic lesions and validating microbiological findings. The detection of antimicrobial resistance raises concerns about the efficacy of current therapeutic options in potential future outbreaks, emphasising the importance of rapid and integrated diagnostic approaches, continued surveillance, and the implementation of effective preventive health management strategies in aquaculture.
Fotoperiodismo y transiciones políticas a finales del siglo XX: entre la Historia y la Memoria
(Historia y Comunicación Social, 2025) Marcos Molano, María Del Mar
Hacia la mitad de la década de los 70 del siglo XX se producen una serie de transformaciones que, desde el ámbito político, afectarán a la sociedad, a la economía, al arte y a la cultura. Los sistemas políticos de varios países mutan pasando de rígidas estructuras dictatoriales a sistemas democráticos más tolerantes: Portugal (1974); Grecia (1974); España (1975); Perú (1980), Argentina (1983), Brasil (1985), Uruguay (1985) o Chile (1990) hasta la caída de la Unión Soviética (1991). Sin embargo, estos cambios no se produjeron de manera inminente, sino que dieron lugar a dilatados procesos de transición, complicados y diversos en función del país y en ningún caso exentos de tensión política y social. En este escenario, si bien los medios de comunicación ocuparon un espacio esencial en el seguimiento de los hechos, será la fotografía (de prensa) la que desarrolle una intensa labor, gracias a una buena cantera de fotógrafos que recogieron el instante de los acontecimientos en un valiente ejercicio de solidaridad ciudadana. Sin embargo, no es pretensión de este monográfico reflejar la capacidad testimonial de las imágenes; tampoco reivindicar el coraje de los profesionales del fotoperiodismo en momentos convulsos —nunca suficientemente reconocido—, sino abundar, desde nuestro presente, en la trascendencia de la fotografía por su valor como fuente documental que facilita revisitar nuestro pasado desde múltiples perspectivas y disciplinas y permite transitar entre la Historia (de las naciones) y la Memoria (de sus gentes): la fotografía tiene una gran capacidad de síntesis, de impacto y de emoción por lo que consigue calar muy hondo en la memoria. La memoria, como la fotografía, es compacta, e igual que almacena imágenes de forma sencilla, es capaz de recuperarlas en cualquier momento y de forma instantánea.
The regulation of synaptic vesicle recycling by cGMP-dependent protein kinase type II in cerebellar granule cells under strong and sustained stimulation
(The Journal of Neuroscience, 2014) Collado-Alsina, Andrea; Ramírez-Franco, Jorge; Sánchez-Prieto Borja, José; Torres Molina, Magdalena Isabel
From the early periods of neurogenesis and migration, up until synaptogenesis, both nitric oxide (NO) and its downstream messenger, cGMP, are thought to influence the development of neurons. The NO/cGMP/cGMP-dependent protein kinase (cGK) pathway regulates the clustering and recruitment of synaptic proteins and vesicles to the synapse, adjusting the exoendocytic cycle to the intensity of activity and accelerating endocytosis following large-scale exocytosis. Here, we show that blockage of the N-methyl-D-aspartate receptor impairs the cycling of synaptic vesicles in a subset of boutons on cerebellar granule cells, an effect that was reversed by increasing cGMP. Furthermore, we demonstrate that presynaptic cGK type II (cGKII) plays a major role in this process. Using the FM1-43 dye to track vesicle recycling, we found that knockdown of cGKII and/or the application of a cGK inhibitor reduced the efficiency of synaptic vesicle recycling to a similar extent. Likewise, in cerebellar granule cells transfected with vGlut1-pHluorin to follow the exoendocytotic cycle, application of a cGK inhibitor slowed vesicle endocytosis when exocytosis was accelerated through strong and sustained stimulation. Additionally, ultrastructural analysis showed that cGKII knockdown or inhibition favored the formation of endosomal-like structures after strong and sustained stimulation. We conclude that cGKII controls the homeostatic balance of vesicle exocytosis and endocytosis in synaptic boutons of rat cerebellar granule cells.
Cannabinoid type 1 receptors transiently silence glutamatergic nerve terminals of cultured cerebellar granule cells
(PLOS One, 2014) Ramírez Franco, José Jorge; Bartolomé-Martín, David; Alonso, Beatris; Torres Molina, Magdalena Isabel; Sánchez-Prieto Borja, José
Cannabinoid receptors are the most abundant G protein-coupled receptors in the brain and they mediate retrograde short-term inhibition of neurotransmitter release, as well as long-term depression of synaptic transmission at many excitatory synapses. The induction of presynaptically silent synapses is a means of modulating synaptic strength, which is important for synaptic plasticity. Persistent activation of cannabinoid type 1 receptors (CB1Rs) mutes GABAergic terminals, although it is unclear if CB1Rs can also induce silencing at glutamatergic synapses. Cerebellar granule cells were transfected with VGLUT1-pHluorin to visualise the exo-endocytotic cycle. We found that prolonged stimulation (10 min) of cannabinoid receptors with the agonist HU-210 induces the silencing of previously active synapses. However, the presynaptic silencing induced by HU-210 is transient as it reverses after 20 min. cAMP with forskolin prevented CB1R-induced synaptic silencing, via activation of the Exchange Protein directly Activated by cAMP (Epac). Furthermore, Epac activation accelerated awakening of already silent boutons. Electron microscopy revealed that silencing was associated with synaptic vesicle (SV) redistribution within the nerve terminal, which diminished the number of vesicles close to the active zone of the plasma membrane. Finally, by combining functional and immunocytochemical approaches, we observed a strong correlation between the release capacity of the nerve terminals and RIM1α protein content, but not that of Munc13-1 protein. These results suggest that prolonged stimulation of cannabinoid receptors can transiently silence glutamatergic nerve terminals.
PaleoRiada: a new integrated spatial database of palaeofloods in Spain
(Earth System Science Data, 2025) Sandoval Rincón, Kelly Patricia; Garrote Revilla, Julio; Vázquez Tarrio, Daniel; Cervel, Silvia; Hernández Manchado, Jose; López Vinielles, Juan; Mateos Ruíz, Rosa María; Ballesteros Cánovas, Juan Antonio; Benito, Gerardo; Díez Herrero, Andrés
Palaeoflood records are natural evidence of past flood events (typically found in landforms, sediments, or vegetation). Over the last 25 years, several palaeoflood record databases have been implemented. However, many of these databases are outdated, lack accessible or comprehensive palaeohydrological information, and present challenges in terms of data accessibility and reuse, particularly for non-research communities (e.g. planning administrations or flood risk managers). This work introduces PaleoRiada, the first open database that compiles published palaeoflood records from Spain. PaleoRiada stores typological, hydrological, temporal, and spatial data collected from approximately 126 publications (including journal articles, scientific reports, and book chapters). This database has been implemented using a simple Relational Database Management System (RDMS), integrated into a web platform, and is freely accessible at https://doi.org/10.5281/zenodo.17391823 (Sandoval-Rincón et al., 2025). The PaleoRiada database contains 299 palaeoflood records (both geological and biological) dated between 2014 CE and 97 000 BP and distributed across both Atlantic (164) and Mediterranean (135) catchments. PaleoRiada includes 157 records with specific discharge values ranging from 0.02 to 320m3 km-2 s-1. These records are associated with a variety of river systems, including wide alluvial plains (25), Mediterranean ephemeral streams (17), mountain torrents (36), and confined valley rivers (79). Additionally, they encompass overbank flood events (102), flash floods (48), dam failures (1), and hyperconcentrated flow events (6). The relationship between PaleoRiada and the Spanish Flood-prone Mapping Project (SNCZI) indicates that approximately 80% of the PaleoRiada records are not included in the flood-prone areas defined by SNCZI. Therefore, several records can be consulted to prioritise or propose new areas for preliminary flood risk assessment. Accessibility and simplified data query and entry in PaleoRiada can facilitate the application of palaeoflood data in land planning and flood risk management.
La dimensión territorial del Senado
(Asamblea: revista parlamentaria de la Asamblea de Madrid, 2025) Alonso De Antonio, Ángel Luis
β-adrenergic receptors activate exchange protein directly activated by camp (epac), translocate munc13-1, and enhance the rab3a-rim1α interaction to potentiate glutamate release at cerebrocortical nerve terminals
(The journal of Biological Chemistry, 2013) Ferrero, José Javier; Alvarez, Ana Maria; Ramírez-Franco, Jorge; Godino, Maria del Carmen; Bartolomé-Martín, David; Aguado, Carolina; Torres Molina, Magdalena Isabel; Luján, Rafael; Ciruela, Francisco; Sánchez-Prieto Borja, José
The adenylyl cyclase activator forskolin facilitates synaptic transmission presynaptically via cAMP-dependent protein kinase (PKA). In addition, cAMP also increases glutamate release via PKA-independent mechanisms, although the downstream presynaptic targets remain largely unknown. Here, we describe the isolation of a PKA-independent component of glutamate release in cerebrocortical nerve terminals after blocking Na+ channels with tetrodotoxin. We found that 8-pCPT-2′-O-Me-cAMP, a specific activator of the exchange protein directly activated by cAMP (Epac), mimicked and occluded forskolin-induced potentiation of glutamate release. This Epac-mediated increase in glutamate release was dependent on phospholipase C, and it increased the hydrolysis of phosphatidylinositol 4,5-bisphosphate. Moreover, the potentiation of glutamate release by Epac was independent of protein kinase C, although it was attenuated by the diacylglycerol-binding site antagonist calphostin C. Epac activation translocated the active zone protein Munc13-1 from soluble to particulate fractions; it increased the association between Rab3A and RIM1α and redistributed synaptic vesicles closer to the presynaptic membrane. Furthermore, these responses were mimicked by the β-adrenergic receptor (βAR) agonist isoproterenol, consistent with the immunoelectron microscopy and immunocytochemical data demonstrating presynaptic expression of βARs in a subset of glutamatergic synapses in the cerebral cortex. Based on these findings, we conclude that βARs couple to a cAMP/Epac/PLC/Munc13/Rab3/RIM-dependent pathway to enhance glutamate release at cerebrocortical nerve terminals. Background: G protein-coupled receptors generating cAMP at nerve terminals modulate neurotransmitter release. Results: β-Adrenergic receptor enhances glutamate release via Epac protein activation and Munc13-1 translocation at cerebrocortical nerve terminals. Conclusion: Protein kinase A-independent signaling pathways triggered by β-adrenergic receptors control presynaptic function. Significance: β-Adrenergic receptors target presynaptic release machinery.
Transference of potentially toxic elements from soils to plants in a derelict Pb–Zn mining area (San Quintín mine, South-Central Spain)
(Applied Geochemistry, 2026) Barquero, José Ignacio; Peco, Jesús Daniel; Villena, Jaime; Campos, Juan A.; José A. Amorós; Esbrí Víctor, José María; García Navarro, Francisco J.; Moreno,Marta María; Higueras Higueras, Pablo
Abandoned mining areas represent critical environmental pollution hotspots due to the persistence of waste materials enriched in potentially toxic elements (PTEs). This study evaluates the transfer of PTEs from contaminated soils to six plant species in the vicinity of the San Quintín Pb–Zn mine (Ciudad Real, Spain), a site impacted by over a century of mining activity. Methods The studied species include the tree Quercus ilex, the shrubs Retama sphaerocarpa and Scrophularia canina, and the annual herbaceous species Spergularia rubra, Rumex bucephalophorus, and Hirschfeldia incana. Soil and plant tissue samples were analysed using X-ray fluorescence and atomic absorption spectrometry to determine concentrations of Zn, Pb, Hg, Cu, and other PTEs. Results Results revealed a high heterogeneity in the bioaccumulation of elements such as Zn, Pb, Hg, and Cu among the studied species, with Spergularia rubra and Rumex bucephalophorus emerging as effective bioindicators of soil contamination. The presence of acid mine drainage (AMD) significantly reduced soil pH (average ≈ 5.7), enhancing PTE solubility (e.g., Zn2+ release) and facilitating their uptake by plants (Bravo et al., 2017). Specific correlations between soil and plant concentrations were identified, and atmospheric uptake was found to significantly influence Hg accumulation in plant tissues. Conclusions This study revealed high PTE contamination and spatial heterogeneity in the San Quintín mining area, with concentration ranges (mg kg−1) of 13–806 for Sb, 70–57,270 for Pb, 68–48,460 for Zn, 18–1680 for Cu, and 3–1920 for Hg, as the most significant elements. Species such as Spergularia rubra and Rumex bucephalophorus exhibited strong metal accumulation, with average concentrations (mg kg−1) of 1460 and 552 for Pb, 1232 and 927 for Zn, 36 and 22 for Cu, and 28 and 9 for Hg, respectively, and the average Pb BAC for S. rubra of 0.15, significantly higher than that of other species. These results indicate the potential of these two species for bioindication and phytoremediation. Furthermore, Hg accumulation in S. rubra follows a logarithmic trend (R2 = 0.98), confirming that atmospheric uptake by leaves supposes an important contribution to bioaccumulation of the element in plants. These results indicate the potential of both species for bioindication and phytoremediation. Mercury uptake was influenced not only by the edaphic compartment but also by atmospheric deposition and plant foliar traits. Overall, these findings provide a better understanding of PTE dynamics within the soil–plant system and support phytoremediation strategies in degraded mining environments.
La Ley catalana de consultas populares de 2014
(Revista de Derecho Político, 2017) Alonso De Antonio, Ángel Luis
Narrativas de distinta magnitud. El 25 de abril portugués en medios brasileños 1974 y 2024
(Actio Nova : Revista de Teoría de la Literatura y Literatura Comparada, 2025) Álvarez De La Cruz, María
ABSTRACT: This article proposes a revision of the narratives in Brazil about Portugal’s Revolution from April25th, 1974 in the light of media articles from 1974 and 2024 from three major Brazilian newspapers, Folha de S. Pauloand O Estado de S. Paulofrom Sao Paulo, as well as Jornal do Brasilfrom Rio de Janeiro. The article contrasts journalistic narratives to three dimensions that configure them: i.e. the temporary, the geostrategic, and the mediation purpose aimed by journalistic narratives for constructing collective memory. Furthermore, it explores its significance of this event for the contemporary lusophone sphere.
Bibliometric and sentiment analysis with machine learning on the scientific contribution of Professor Srinivasa Sourirajan
(Desalination, 2022) Khayet Souhaimi, Mohamed; Aytaç, Ersin; Matsuura, Takeshi
Prof. Srinivasa Sourirajan is remembered by the desalination and membrane community as the “Father of Reverse Osmosis”. He passed away at the age of 98 peacefully in his beloved city Ottawa (Canada). His legacy will be remembered by the scientific community “membrane science, membrane processes, desalination and engineering”. His research studies were not only novel, but also very creative and even visionary. He offered a priceless gift to humanity by bringing clean water to all those in need through the presentation of reverse osmosis technology together with its appropriate membranes for water treatment, including desalination. This technology has now gained worldwide interest as it is able to produce clean water at a lower cost compared to other separation processes. His scientific contribution also pioneered other research areas. He developed novel research methodologies in geophysics while in catalysis he produced unleaded gasoline to help with the smog issue. He was nominated for the Nobel Prize three times. Prof. Sourirajan had also an exceptional humanitarian attribute. He played a significant role in bringing the Indian community to Ottawa. In the present paper we apply machine learning for his extraordinary and original scientific contribution. The results reveal how influential scientist he was.
Tecno(in)utilidades y tecno(dis)tracciones. Desencantamientos de la productividad
(¬Accesos. Revista de investigación artística, 2023) Moreno Teva, María Linarejos; Alonso Atienza, Loreto
Artículo editorial escrito por Linarejos Moreno y Loreto Alonso Atienza, editoras del número 6 de Accesos. Revista de Investigación Artística, en el que se presenta y articula el marco conceptual del volumen y se introducen los contenidos de los artículos que lo componen. El texto aborda controversias estéticas y políticas en torno a la creencia en la funcionalidad, la utilidad, la eficiencia y la rentabilidad de la tecnología en los regímenes técnicos contemporáneos. A lo largo de la editorial se sintetizan las principales líneas de investigación de los artículos, centradas en prácticas de arte contemporáneo que cuestionan los usos productivos y normativos de la tecnología mediante imaginarios, mitos y rituales vinculados a la tecno(in)utilidad y la tecno(dis)tracción. Se describen modos de hacer, sentir y conocer que incorporan el descuido, la improvisación, el accidente, la obsolescencia o la ineficiencia como estrategias críticas, subrayando la capacidad de participación y agenciamiento de personas y objetos. Asimismo, las editoras sitúan el número en diálogo con planteamientos poshumanistas y con debates actuales en torno a la subjetividad, la alteridad y la tecnocracia, atendiendo tanto a formas de resistencia frente a las lógicas productivas heredadas de la economía fordista como a las dinámicas del tecnocapitalismo contemporáneo. La editorial destaca, además, el desplazamiento del concepto de lo inútil desde su uso histórico como argumento de exclusión —especialmente de la mujer del sistema productivo— hacia su resignificación como forma de disidencia . En conjunto, el texto propone una reflexión crítica sobre los modelos políticos, económicos y ontológicos que atraviesan las prácticas artísticas analizadas en el número.
La Inteligencia Artificial (IA) como contenido periodístico en la prensa local española: el caso del diario Información de Alicante
(Textual & Visual Media, 2025) Mula Grau, Jesús; Cabezuelo Lorenzo, Francisco
Este estudio analiza la frecuencia y evolución del término “Inteligencia Artificial” (IA) en el diario Información, el periódico local de referencia en la provincia de Alicante (España), durante una década (2014-2024). Mediante un análisis hemerográfico exhaustivo de las ediciones impresas, se examina cómo la inteligencia artificial ha pasado de ser un concepto marginal a un tema central en la prensa local. La investigación revela un aumento significativo en la presencia del término, reflejando la creciente importancia de la IA en el debate público. Los resultados muestran patrones de incremento en la mención del término, coincidiendo con hitos relevantes en el desarrollo de la IA. Este estudio contribuye a la comprensión de cómo los medios locales construyen el discurso sobre la IA y su evolución temporal, ofreciendo insights sobre la percepción pública de esta tecnología en un contexto local específico.

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