Resultados de investigación

Conjunto de 2039 imágenes en formato TIFF que proceden de la digitalización de diapositivas y fotografías originales del autor realizadas en color y algunas en blanco y negro. Están organizadas en carpetas con nombres de una o dos palabras que agrupan varias imágenes de un mismo tema: Camisa, religiosidad popular, etc. Cada imagen se identifica por un nombre formado por las letras ACEA, un guión bajo de separación y un número currens. Ese nombre es el que figura en la base de datos en el campo Numimagen y establece la relación entre las carpetas de imágenes y la base de datos en la que se pueden buscar. El campo de descripción aporta información sobre la imagen y permite buscar por temas o palabras permitiendo poner en relación imágenes que se encuentran situadas en carpetas temáticas diferentes. La base de datos permite localizar las imágenes con su carpeta y su nombre individual., Este conjunto de datos está sujeto a una licencia CC BY 4.0, Conjunto de 2039 imágenes reunidas a lo largo de quince años y realizadas por el autor, Antonio Cea Gutiérrez, como apoyo a sus estudios etnográficos y antropológicos en la Sierra de Francia y Candelario. En sus viajes y estancias en los pueblos de Salamanca, y en concreto a la Sierra de Francia, recogía imágenes de arquitectura, escultura, pintura, indumentaria, costumbres populares, joyería y utensilios que fueran considerados de utilidad o representativos de la cultura popular todavía vigente en la zona y de su patrimonio. Las imágenes han servido de apoyo a los estudios realizados por el autor y con frecuencia han formado parte de sus publicaciones. Forman parte del conjunto esquemas realizados por el autor con dibujos de piezas testigo y modelos que han servido para explicar características genéricas de piezas de indumentaria y joyería., Peer reviewed

3 pages. -- Figure S1. TEM bright field images showing (a,b) an as-prepared PZO lamella, after (c,d) 150°C and (e,f) 200°C annealing. -- Figure S2. According to the experiment results on the Pb, Zr and O positions, we have built a FiE structural model., Peer reviewed

The dataset is made available under the Open Database License. Any rights in individual contents of the database are licensed under the Database Contents License. Please, read the full ODbL 1.0 license text for the exact terms that apply. Users of the dataset are free to: Share: copy, distribute and use the database, either commercially or non-commercially. Create: produce derivative works from the database. Adapt: modify, transform and build upon the database. Under the following conditions: Attribution: You must attribute any public use of the database, or works produced from the database. For any use or redistribution of the database, or works produced from it, you must make clear to others the license of the original database. Share-Alike: If you publicly use any adapted version of this database, or works produced from an adapted database, you must also offer that adapted database under the ODbL., This research was supported by grant PID2020-116940RB-I00 funded by MCIN/AEI/10.13039/501100011033, and PRX21/00100 Fulbright Mobility Program Fellowship from Spanish Ministerio de Universidades to S.P., Peer reviewed

Supplement Material 1 describes in detail the experimental techniques used. -- Supplement Material 2 presents a film showing changes in indicatrix orientations during the low-temperature transition in PbZrO3 single crystals., Weak low-temperature_supplementary_material_1.pdf, Weak low-temperature_supplementary_material_2.pptx, Peer reviewed

22 pages. -- The PDF file includes: Experimental procedures. -- Supplementary Notes. -- Figs. S1 to S17., Electrochemiluminescence (ECL) is widely employed for medical diagnosis and imaging. Despite its remarkable analytical performances, the technique remains intrinsically limited by the essential need for an external power supply and electrical wires for electrode connections. Here, we report an electrically autonomous solution leading to a paradigm change by designing a fully integrated all-optical wireless monolithic photoelectrochemical device based on a nanostructured Si photovoltaic junction modified with catalytic coatings. Under illumination with light ranging from visible to near-infrared, photogenerated holes induce the oxidation of the ECL reagents and thus the emission of visible ECL photons. The blue ECL emission is easily viewed with naked eyes and recorded with a smartphone. A new light emission scheme is thus introduced where the ECL emission energy (2.82 eV) is higher than the excitation energy (1.18 eV) via an intermediate electrochemical process. In addition, the mapping of the photoelectrochemical activity by optical microscopy reveals the minority carrier interfacial transfer mechanism at the nanoscale. This breakthrough provides an all-optical strategy for generalizing ECL without the need for electrochemical setups, electrodes, wiring constraints, and specific electrochemical knowledge. This simplest ECL configuration reported so far opens new opportunities to develop imaging and wireless bioanalytical systems such as portable point-of-care sensing devices., Peer reviewed

10 pages. -- Figure S1. Fourier-transform infrared spectroscopy (FT-IR) spectra of the primer coatings after 8, 24 and 96 h of reaction in (a) cotton and (b) paper. -- Figure S2. Curve-fitting results corresponding to C1s, N1s and O1s high-resolution XPS spectra for 8 and 24 h. CPS: Counts per second. -- Figure S3. Stress−strain curves conducted at 30 °C for paper-based sorbents. -- Figure S4. Scanning electron microscopy (SEM) images of (a) cotton and (b) paper samples at different time points of pyroHMDA coating. Scale bar: 40 m. -- Figure S5. Weight variation for parental cotton and cC-24 sorbent during exposition to humid gases at 25 °C. -- Figure S6. CO2 capture ability of the pristine substrates in comparison with sorbent coated at 24 h for (a) cotton and (b) paper. -- Figure S7. Regenerability test for CO2 adsorption on cC-24 sample under sorption conditions = 40 mL/min 4% humid CO2 (18% RH) at RT for 60 min, and desorption conditions = 40 mL/min humid N2 at 110 °C for 20 min. -- Figure S8. Differential scanning calorimetry (DSC) profile of cC-24 for CO2 adsorption under 4% humid CO2 for 60 min and desorption under dry N2 for 20 min at 110 °C. -- Scheme 1. Reaction mechanisms of (a) primary amine and (b) quaternary ammonium group with CO2. -- Figure S9. FT-IR before (cC-24) and after functionalization (cCQ-24). -- Figure S10. SEM images of the sorbent before (cC-24) and after functionalization (cCQ-24). -- Figure S11. Stress−strain curves obtained on cC-24 and quaternized cCQ-24, at 30 °C. -- Figure S12. DSC profile of cCQ-24 for CO2 adsorption under humidified 4% CO2 for 60 min and desorption under dry N2 for 20 min at 50 °C. -- Figure S13. Normalized adsorption capacity for cC-24 and cCQ-24 during various adsorption–desorption cycles. Sorption conditions = 40 mL/min 4% humid CO2 at RT for 60 min, and desorption conditions = 40 mL/min humid N2 at 110 °C for 20 min. -- Experimental section., Peer reviewed

4 pages. -- S1: Analysis of the oxidation state of Fe ions. -- S2: Net lattice stretching caused by antisite defects. -- Figure S2: Schematics showing the effect of antisite defects on the misfit strain between the GGG substrate and the YIG film. -- Figure S3: Ferromagnetic resonance was measured at room temperature by sweeping the applied magnetic field, H, at different excitation frequencies in the range from 4 to 17 GHz (with 1 GHz step)., Peer reviewed

Animated movie with atomic 3D model of experimental particle., Rhodium–platinum core–shell nanoparticles on a carbon support (Rh@Pt/C NPs) are promising candidates as anode catalysts for polymer electrolyte membrane fuel cells. However, their electrochemical stability needs to be further explored for successful application in commercial fuel cells. Here we employ identical location scanning transmission electron microscopy to track the morphological and compositional changes of Rh@Pt/C NPs during potential cycling (10 000 cycles, 0.06–0.8 VRHE, 0.5 H2SO4) down to the atomic level, which are then used for understanding the current evolution occurring during the potential cycles. Our results reveal a high stability of the Rh@Pt/C system and point toward particle detachment from the carbon support as the main degradation mechanism., Peer reviewed

Animated movie with atomic 3D model of particle in thermodynamic equilibrium., Rhodium–platinum core–shell nanoparticles on a carbon support (Rh@Pt/C NPs) are promising candidates as anode catalysts for polymer electrolyte membrane fuel cells. However, their electrochemical stability needs to be further explored for successful application in commercial fuel cells. Here we employ identical location scanning transmission electron microscopy to track the morphological and compositional changes of Rh@Pt/C NPs during potential cycling (10 000 cycles, 0.06–0.8 VRHE, 0.5 H2SO4) down to the atomic level, which are then used for understanding the current evolution occurring during the potential cycles. Our results reveal a high stability of the Rh@Pt/C system and point toward particle detachment from the carbon support as the main degradation mechanism., Peer reviewed

Animated movie with segmented high-resolution tomographic reconstruction and orthoslice cut of as-synthesized Rh@Pt/C NPs., Rhodium–platinum core–shell nanoparticles on a carbon support (Rh@Pt/C NPs) are promising candidates as anode catalysts for polymer electrolyte membrane fuel cells. However, their electrochemical stability needs to be further explored for successful application in commercial fuel cells. Here we employ identical location scanning transmission electron microscopy to track the morphological and compositional changes of Rh@Pt/C NPs during potential cycling (10 000 cycles, 0.06–0.8 VRHE, 0.5 H2SO4) down to the atomic level, which are then used for understanding the current evolution occurring during the potential cycles. Our results reveal a high stability of the Rh@Pt/C system and point toward particle detachment from the carbon support as the main degradation mechanism., Peer reviewed