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Mi Primer Geolodía: El reto de llegar al público de infantil y primaria
No full textGeolodía es una iniciativa de divulgación consistente en excursiones guiadas por profesionales de la
geología que se celebra a nivel nacional desde 2010, coordinado por la Sociedad Geológica de España, en
todas las provincias. Al Geolodía acude público muy diverso y el contacto personal directo durante los
recorridos permite adaptar las explicaciones a la variedad de asistentes y a sus conocimientos geológicos
previos. Las encuestas realizadas tras la actividad señalan que la fórmula funciona y muestra de ello es que
cada año asisten unas 9000 personas. Aun así, el segmento de la población comprendido entre 3 y 12 años
es minoritario. Por ello, en 2023 la Comisión Mujeres y Geología decidió crear Mi primer Geolodía, una
jornada en la que trasladar conceptos geológicos básicos e información sobre la historia geológica de su
entorno a las y los más pequeños mediante diversos formatos: talleres, juegos, recorridos de campo, charlas,
teatro, manualidades, cuentacuentos... En 2023, se celebró la primera edición en la provincia de Granada y
en 2024 se ha extendido a otras 5 provincias (Alicante, Lugo, Madrid, Segovia, Zaragoza). Mi primer
Geolodía cuenta con la colaboración de la Fundación Española para la Ciencia y la Tecnología - Ministerio
de Ciencia, Innovación y Universidades
First Ex Situ In Vitro Propagation Protocol of Coronilla viminalis Salisb., An Endangered Fodder Species Adapted to Drought and Salinity
No full textCoronilla viminalis Salisb. is a fodder leguminous plant from the Canary Islands and Northwestern Africa with adaptation to drought. Its conservation status is critical. Its low germination capacity and intense loss of viability of the seeds over time complicate its conservation, limiting its long-term maintenance in germplasm banks and hampering its potential use as a resilient fodder crop. Therefore, in this work, two alternative propagation methods have been addressed. The first was based on facilitating seed germination under aseptic conditions, supplementing the media with gibberellic acid (GA). The latter consisted of creating a micropropagation method from nodal segments and testing different media and pretreatments with indole-3-acetic acid (IAA). The quantity and quality of the roots were assessed, and the plant acclimation rate was measured. The results showed that the optimum concentration of GA for germination, up to 98%, was 250 PPM. The experiments showed that using IAA in the micropropagation media is critical for in vitro rooting in this species. A hormonal pretreatment with IAA significantly improved the rooting efficiency compared to supplementing it into the culture media. One hundred percent of acclimated plants survived the process. These new protocols will help conserve the species and explore its possibilities as fodder crops
Would chitin and chitosans from Tenebrio molitor have antimicrobial effect at the ruminal level? An in vitro assay
No full textTrabajo presentado al: 2nd InsectERA Congress.
Santarém (Portugal), 11.06.2025Projects PID2023-146979OB-100 and CSI020P23, FEDER and Tebrio Group S.L.Peer reviewe
Cómo sacar el máximo provecho de los límites existentes
No full textEl Grupo de Trabajo de Propiedad Intelectual de FESABID impartió, en el marco de las XIX Jornadas Españolas de Información y Documentación (JEID25) celebradas en Vitoria-Gasteiz, un taller práctico sobre los límites existentes en la legislación española en materia de propiedad intelectual.
El objetivo del taller era doble: por un lado, dar a conocer la línea de acción formativa del grupo, que aglutina a profesionales de bibliotecas, museos y archivos; y por otro, adentrarse, de una manera pedagógica y “en positivo”, en el análisis de los límites o excepciones a la ley de propiedad intelectual que nuestro colectivo profesional tiene a su alcance, para maximizar este mecanismo legal y para perderle el miedo.
El taller incluyó supuestos prácticos de aplicación de diversos límites y cerró con varias reflexiones críticas sobre cuestiones aún pendientes de resolver en nuestro marco legal de propiedad intelectual, por ejemplo, relativas a la ciencia abierta, inteligencia artificial y acceso y uso de obras fuera del circuito comercial. Información completa en https://www.fesabid.org/propiedad-intelectual-en-positivo-contenido-taller-jeid25/N
Large low-field-driven electrocaloric effect in organic-inorganic hybrid TMCM-CdCl3
Get PDFChemicals and CAS Registry Numbers
cadmium chloride 10108-64-2Due to environmental-friendliness and high-efficiency, electrocaloric effect (ECE) is widely regarded as a refrigeration technology for tomorrow. Herein, utilizing organic-inorganic hybridization strategy, we achieve the largest low-field-driven ECE and highest directly-measured electrocaloric strength (ECS) via packing sphere-like organic cation (CH3)3NCH2Cl+ (TMCM+) into inorganic one-dimension (1-D) CdCl3 chain framework. Single-crystal X-ray (SC-XRD) diffraction combined with Raman Spectra reveals that the simultaneous order-disorder transition of organic cations and dramatic structure change of inorganic framework are responsible for the large ECE. Moreover, the measured P-E loops and density function theory (DFT) calculations convey that the distinctive electric-field-induced metastable phase and consequential two-step meta-electric transition could lower the transition energy barrier and account for the low driving field. This work shows that the low-symmetry interaction between inorganic framework and organic cations plays a key role in achieving large ECE under low-field, which provides a method for designing high-performance electrocaloric materials via organic-inorganic hybridization.This work was supported by the National Key Research and Development Program of China (Grant Nos. 2020YFA0711500 (J.W. and Y.Y.), 2023YFA1406003 (F.H.), 2021YFB3501202 (F.H.)), the National Natural Sciences Foundation of China (Grant Nos. 52088101 (B.S.), 92263202 (F.H.), U23A20550 (F.H.), 22361132534 (J.W. and F.H.)), and the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (XDB33030200 (B.S. and F.H.)). A portion of this work was carried out at the Synergetic Extreme Condition User Facility (SECUF). J.Y.L. and V.F. acknowledge the support of AEI/FEDER-UE (grants PID2019-105720RB-I00 (J.Y.L. and V.F.) and PID2023-146047OB-I00 (J.Y.L. and V.F.) from AEI/10.13039/501100011033), and of the Chinese Academy of Sciences President’s International Fellowship Initiative (PIFI) for visiting scientists (Grants No. 2024VMC0006 (J.Y.L.), 2024VMA0021 (V.F.)). J.Y.L. acknowledges an EMERGIA 2021 Fellowship (EMC21_00418 (J.Y.L.)) from Junta de Andalucía.Peer reviewe
Microstructural control by freeze-casting of CaO architectures for improved and stable thermochemical energy storage performance
No full textThis study investigates the development of porous calcium-based monoliths via freeze-casting (FC) as a novel approach for thermochemical energy storage, particularly within the Calcium Looping (CaL) process. The freeze-casting technique enabled the fabrication of scaffolds with controlled porosity using polyvinyl alcohol (PVA) as a binder. Experimental results demonstrated that freeze-cast monoliths exhibited superior multicycle performance under various carbonation and calcination conditions. The FC-CaCO3 monolith achieved the highest residual conversion of 68.1 % under mild vacuum calcination conditions (780 °C, 0.1 bar CO2), significantly surpassing other configurations. Tests conducted in an inert atmosphere also yielded favorable results, with a conversion of 56.1 %, outperforming equivalent raw powder samples. The enhanced performance is attributed to improved CO2 interaction with the porous structure, mitigating sintering effects and preserving active surface area. Morphological observations by X-ray tomography and SEM confirmed limited particle sintering after multiple cycles, maintaining a reactive surface that supported consistent conversion rates. The pore size distribution of the material evolves upon cycling resulting in an increased microporosity, while the pore network maintains a low tortuosity (τ ~ 1.5–2.0). The addition of dopants such as ZrO2 and SiO2 did not enhance performance, as the monoliths' inherent structure provided sufficient stability. These findings highlight freeze-casting as a promising method for creating advanced porous materials suitable for energy storage applications.Financial support is acknowledged from grants TED2021-131839B-C22 and PDC2021-121552-C21 (MCIN/AEI/10.13039/501100011033 and European Union Next Generation EU/PRTR) and by European Union NextGenerationEU/PRTR, and the grant PID2022-140815OB-C22 funded by MCIN/AEI/10.13039/501100011033 and ERDF A way of making Europe. PhD Fellowship granted to N. Amghar (PRE2018-085866) from the Spanish Government Agency Ministerio de Ciencia, Innovación y Universidades. J. Ivorra-Martinez thanks Generalitat Valenciana - GVA for funding a postdoc position through the CIAPOS program co-funded by ESF Investing in your future, grant number CIAPOS/2023/362. XCT measurements were performed at the X-ray laboratory of the Research, Technology and Innovation Center (CITIUS) of the University of Seville.Peer reviewe
ZF-UDS-7329: A relic galaxy in the early Universe
No full textThe formation time scales of quiescent galaxies can be estimated in two different ways: by their star formation history and by their chemistry. Previously, the methods yielded conflicting results, especially when considering α-enhanced objects. This is primarily due to the time resolution limitations of very old stellar populations, which prevent accurately constraining their star formation histories. We analysed the JWST observations of the extremely massive galaxy ZF-UDS-7329 at z ∼ 3.2 and show that the higher time resolution necessary to match the chemical formation time scales using stellar population synthesis can be achieved by studying galaxies at high redshift. We compare the massive galaxy to the well-known relic galaxy NGC 1277, arguing that ZF-UDS-7329 is an early Universe example of the cores of present-day massive elliptical galaxies or, if left untouched, a relic galaxy.We thank the referee for the careful reading of this Letter and the useful comments that helped improve the manuscript. We thank E. Glazebrook for sharing the data that was the basis of this work and R. McDermid for the ATLAS3D data. EAH, IMN and AV acknowledge support from the PID2022-140869NB-I00 grant from the Spanish Ministry of Science and Innovation. MHC and PIN acknowledge financial support from the State Research Agency of the Spanish Ministry of Science and Innovation (AEI-MCINN) under the grants “Galaxy Evolution with Artificial Intelligence” with reference PGC2018-100852-A-I00 and “BASALT” with reference PID2021-126838NB-I00. JPVB received a fellowship from the “la Caixa” Foundation (ID 100010434), the fellowship code is LCF/BQ/DI23/11990084. MM acknowledges support from the grant RYC2022-036949-I financed by the MICIU/AEI/10.13039/501100011033 and by ESF+. Software: We acknowledge the use of the python packages NUMPY (Harris et al. 2020), MATPLOTLIB (Hunter 2007) and ASTROPY (Astropy Collaboration 2022).Peer reviewe
Silenciamiento y activación de un Sistema de Secreción Tipo VI codificado en un plásmido conjugativo
No full textTrabajo presentado en MikrobioGUNE celebrado en Leioa (España) el día 10 de diciembre de 2024.El Sistema de Secreción Tipo VI (T6SS) es un complejo multiproteico presente en bacterias Gramnegativas que permite inyectar efectores de manera dependiente de contacto a otras células, tanto procariotas como eucariotas. Su papel es crítico en la competición en comunidades microbianas y en virulencia. Estos sistemas están principalmente codificados en cromosomas, pero nuestro análisis bioinformático encontró también T6SSs asociados a varias Unidades Taxonómicas Plasmídicas (PTUs). La funcionalidad de los T6SSs codificados en plásmidos está escasamente probada. En este trabajo, nos centramos en el mecanismo de regulación y actividad de un T6SS codificado en una PTU de Enterobacterales. Empleando reporteros de fluorescencia en diferentes contextos genéticos se identificó un regulador negativo y otro positivo, H-NS y SlyA, respectivamente. El papel de estos reguladores se correlaciona tanto a nivel de expresión génica (RNA-Seq), como con el ensamblaje del sistema, cuyas dinámicas han sido estudiadas mediante microscopía de fluorescencia a lo largo del tiempo. Además, se evaluó la toxicidad de dos posibles efectores en células bacterianas y de levaduras, siendo estas últimas susceptibles a uno de ellos. En resumen, este estudio presenta el primer T6SS activo codificado en un plásmido conjugativo.Ministerio de Universidades (FPU20/04579); EMBO Scientific Exchange Grant (10617); Ministerio de Ciencia e Innovación (proyecto MCIN/AEI10.13039/501100011033 PID2020-117923GB-100)
Estilos decorativos: Cardial y Gradina de los ríos Ebre al Segura
No full textCeramic decoration has been a significant archaeological proxy since its earliest appearance in the record. Furthermore, the concept of style encompasses additional traits, enriching the cultural understanding of groups and facilitating their study through evolutionary archaeology. This study aims to define, in detail, some characteristic styles of the Early Neolithic in the eastern Iberian Peninsula, focusing on decorations produced using shells (Cardial and related styles) and toothed tools (Gradina). Morphological and typological data, along with techniques and the symmetry of vessel designs, will be analysed in conjunction with the spatial information of archaeological sites. The results highlight evolutionary forces that shed light on the dynamics of the 6-5th millennia cal BC in this region, offering a framework for future stylistic studies.La decoración cerámica es un marcador arqueológico relevante desde su aparición en el registro. Además, el concepto de estilo incluye otros rasgos que amplían la información proporcionada, lo que facilita el estudio cultural de los grupos. Por ello, es necesario la definición exhaustiva de los estilos decorativos para el estudio de estas sociedades desde la Arqueología evolutiva. En este trabajo, se determinarán de formas diferentes algunos de los estilos característicos del Neolítico Antiguo en el Este peninsular: decoraciones realizadas con conchas (Cardial y asimilables) e instrumentos dentados (Gradina). Se recogerán los datos morfológicos, tipológicos, técnicas y simetría del diseño de los vasos, que serán tratados junto a la información espacial de los yacimientos para determinar estilos y establecer pautas de estudio futuras. Los resultados muestran fuerzas evolutivas que informan sobre las dinámicas de VI-V milenios cal BC en esta zona
Home, annex or pied-à-terre? Assessing the socioeconomic dimension of small-sized built environments at Neolithic Çatalhöyük, Central Anatolia
No full textBuilt environments provide valuable information on domestic and group activities, the development of household identities, and the changing use of space. In the case of Neolithic communities in the Near East, interpretations have often been articulated around the concept of autonomous households as the principal elements of social and economic organisation, each occupying discrete buildings that showed a high degree of spatial standardisation. However, a strong research focus on the architectural homogeneities of domestic buildings may have masked differentiations promoted by variable economic and social practices. This paper aims to draw attention to the multiple forms in which buildings occurred at the clustered settlement of Çatalhöyük (Türkiye) by focusing on the insufficiently studied small-sized built environments, those under ca. 10m in extension. Assumed to be socially and economically dependent on larger houses, the functional role that these small constructions played in the constitution of the large settled community at Çatalhöyük has been seldom explored. This study uses thin-section micromorphology to examine the stratigraphic sequence of a small built environment, Space 87, observed in the field to display a complex life-history spanning multiple phases of occupation and architectural renovation. Micro-contextual analyses have contributed to unravelling formation processes, transformations, and use and concepts of space in this structure. Results highlight the great degree of dynamism and symbolic evidence of Space 87, akin to that observed in larger buildings, as reflected by multiple burials, recurrent floor refurbishments and fire installation replacements. The micro-stratigraphic history of this small built environment points to the repeated restructuring of its living space as a means to balance the architectural standardisation traditionally displayed by Neolithic buildings at Çatalhöyük with the adaptations to changes in its socio-economic function and risks to its constructional integrity.Peer reviewe