Resultados totales (Incluyendo duplicados): 35619
Encontrada(s) 3562 página(s)
Encontrada(s) 3562 página(s)
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354800
Dataset. 2024
REDUCED TROPHIC NICHE BREATH IS ASSOCIATED WITH HIGHER PRODUCTIVITY IN A RECOVERING APEX PREDATOR POPULATION [DATASET]
- Gabriel Hernando, Miguel de
- Fernández-Gil, Alberto
- Lamas, Javier Ángel
- Ansola, Luis
- Román, Jacinto
- Revilla, Eloy
[Description of methods used for collection/generation of data] The dataset includes the raw data used to study the golden eagles´ diet in Burgos province. It includes data on prey remains collected below nests and at nearby plucking posts (mostly fresh remains, and some from pellets), although some prey remains (< 1%) were identified by direct observation of hunting eagles. Prey items were identified de visu , either directly, or by comparing the remains with a reference collection of feathers (i.e., for bird species) or with a reference collection of skull, bones and skin (i.e., for mammals). Some prey remains were not identified at the specific level, and were tabulated at Order level (e.g., Lagomorpha), at Phylum level (Reptilia), or even at a more general level (e.g., small mammals, including Rodentia and Insectivora).
Prey remains were collected below nests and at nearby plucking posts (mostly fresh remains, and some from pellets), although we also accounted with some prey remains (< 1%) identified by direct observation of hunting eagles. Our study period spanned 25 years, from 1992 to 2017; during this period, we sampled annually an average of 11.6 eagle territories/pairs (n= 290 pair*years), distributed over the entire study area (i.e. 70 different territories sampled along the study period).
Prey items were identified de visu, following a similar procedure as Whitfield et al. (2009), either directly, or by comparing the remains with a reference collection of feathers (i.e., for bird species) or with a reference collection of skull, bones and skin (i.e., for mammals), using also two complementary field guides for prey identification (Brown et al. 1987, García 2013)., [Methods for processing the data] For prey quantification at a site and sampling episode (one visit per pair and year) we estimated minimum number of prey individuals of each species.
Data was tabulated in excel format comprising 1,916 records and 14 fields (columns), including information on pair identification, year of sampling, prey species and number, reproductive data for each monitored event and seven variables related with territory traits that have been found to have an influence on golden eagle’s productivity for the studied population (Fernández-Gil et al. 2023)., Understanding trophic and demographic dynamics of apex predators is of paramount importance for ecosystems conservation. Apex predators are usually free from predation and, thus, main drivers of population dynamics are trophic resources availability affecting breeding performance. Albeit food habits have been described in many apex species, the effects of changes in the trophic niche on long-term demographic dynamics are poorly known. We describe the long- term (N = 25 years) changes in trophic niche breath of a recovering golden eagle population in a Mediterranean landscape (North Spain), and searched for potential correlates with their productivity (i.e., number of fledged eaglets per controlled pair) as a proxy of their breeding performance (N = 290 pairs*years). We identified a total of 3,475 prey items from 77 species; rabbits, hares and red-legged partridges were the most frequent prey consumed (overall 51%), followed by roe deer (10%), red-billed chough, red foxes and woodpigeons, all of them with >5%. Prey diversity in eagle’s diet decreased along the study period. Rabbits and roe deer consumption increased, hares and partridges decreased, while foxes, choughs and woodpigeons showed no significant trends. Prey diversity and red-legged partridge consumption were negatively correlated with productivity at territory level, while rabbits, corvids and pigeons showed strong positive relationship with productivity. The size of the territory showed the strongest positive relation with productivity, while roughness was negatively correlated. Rabbits and ungulates showed negative and positive correlation with roughness, respectively, while predators consumption has a negative relation with the size of the territory. Our findings give insights the potential trophic mechanisms driving the dynamics of recovering apex predator populations; a reduction in the trophic niche breath towards specific groups of prey, which could be due to a higher availability and individual specificity towards these prey species, might enhance productivity at territory level and, ultimately, influence population dynamics facilitating the recovery process. The remarkable increasing consumption of wild ungulates and predators, and even of other apex consumers, suggest that the current population recovery and reduced trophic niche breath may facilitate this eagle population to exhibit its apex role and contribute to ecosystem functionality., Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/354800, https://doi.org/10.20350/digitalCSIC/16231
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354800
HANDLE: http://hdl.handle.net/10261/354800, https://doi.org/10.20350/digitalCSIC/16231
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354800
PMID: http://hdl.handle.net/10261/354800, https://doi.org/10.20350/digitalCSIC/16231
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354800
Ver en: http://hdl.handle.net/10261/354800, https://doi.org/10.20350/digitalCSIC/16231
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354800
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354837
Dataset. 2023
RAW DATA OF THE MANUSCRIPT " COBALT(I)-CATALYZED (3 + 2 + 2) CYCLOADDITION BETWEEN ALKYLIDENECYCLOPROPANES, ALKYNES, AND ALKENES"
- Da Concepción, Eduardo
- Lázaro-Milla,Carlos
- Mascareñas, José L.
- López García, Fernando José
- Fernández, Israel
Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/354837, https://doi.org/10.20350/digitalCSIC/16232
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354837
HANDLE: http://hdl.handle.net/10261/354837, https://doi.org/10.20350/digitalCSIC/16232
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354837
PMID: http://hdl.handle.net/10261/354837, https://doi.org/10.20350/digitalCSIC/16232
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354837
Ver en: http://hdl.handle.net/10261/354837, https://doi.org/10.20350/digitalCSIC/16232
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354837
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354850
Dataset. 2023
SUPPORTING INFORMATION OF THE MANUSCRIPT " COBALT(I)-CATALYZED (3 + 2 + 2) CYCLOADDITION BETWEEN ALKYLIDENECYCLOPROPANES, ALKYNES, AND ALKENES"
- Da Concepción, Eduardo
- Lázaro-Milla,Carlos
- Fernández,Israel
- Mascareñas, José L.
- López García, Fernando José
Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/354850, https://doi.org/10.20350/digitalCSIC/16233
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354850
HANDLE: http://hdl.handle.net/10261/354850, https://doi.org/10.20350/digitalCSIC/16233
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354850
PMID: http://hdl.handle.net/10261/354850, https://doi.org/10.20350/digitalCSIC/16233
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354850
Ver en: http://hdl.handle.net/10261/354850, https://doi.org/10.20350/digitalCSIC/16233
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354850
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354853
Dataset. 2024
SUPPLEMENTAL MATERIAL: THREE CHARGE-ORDERED PHASES IN BILAYERED PR(SR0.1CA0.9)2MN2 O7: FROM ANTIFERRODISTORTIVE TO FERRODISTORTIVE STRUCTURES
- Blasco, Javier
- Cuartero, Vera
- Lafuerza, Sara
- García Muñoz, Josep Lluís
- Fauth, François
- Subías, G.
Details about Diffraction Refinements with Rietveld Plots, Comparison of Mode Decomposition and Atom Shifts for Different Irreps., Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/354853
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354853
HANDLE: http://hdl.handle.net/10261/354853
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354853
PMID: http://hdl.handle.net/10261/354853
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354853
Ver en: http://hdl.handle.net/10261/354853
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354853
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354863
Dataset. 2024
DATASET FOR THE PAPER "DESCALZO, E; JIMÉNEZ, J.; VILLAFUERTE, R.; DELIBES-MATEOS, M.; DÍAZ-RUIZ, F.; FERRERAS, P. 2024. QUANTIFYING THE PREDATION IMPACT OF AN EXPANDING MESOCARNIVORE ON DECLINING SMALL-GAME SPECIES"
- Descalzo, Esther
- Jiménez, José
- Villafuerte, Rafael
- Delibes-Mateos, Miguel
- Díaz-Ruiz, Francisco
- Ferreras, Pablo
[Description of methods used for collection/generation of data] European rabbits and red-legged partridge perpendicular distances from the transect line were performed along transects in vehicle at 10-15 km/h starting one hour before sunrise for rabbits and one hour after sunrise for partridges.
Egyptian mongooses were captured with box-traps baited with dead chicken. Adult and subadult mongooses were tagged with VHF-GPS radio-collars, from which telemetry data were obtained. Between 42 and 45 camera-traps, baited with lynx urine and valerian extract, were deployed in each study area in a regular shaped grid with an average distance of 400 m between cameras.
Mongoose sctas were collected along transects on foot in each study area., Dataset for the paper "Descalzo, E; Jiménez, J.; Villafuerte, R.; Delibes-Mateos, M.; Díaz-Ruiz, F.; Ferreras, P. 2024. Quantifying the predation impact of an expanding mesocarnivore on declining small-game species" © 2024 by Descalzo, E; Jiménez, J.; Villafuerte, R.; Delibes-Mateos, M.; Díaz-Ruiz, F.; Ferreras, P. is licensed under CC BY-NC-ND 4.0, [Purpose] To estimate the predation impact of an expanding mesocarnivore, the Egyptian mongoose (Herpestes ichneumon), on the populations of two declining prey species highly valued by hunters in southern Europe, the European rabbit (Oryctolagus cuniculus) and the red-legged partridge (Alectoris rufa)., [Methods] We estimated the densities of mongooses, rabbits and partridges in three study areas of central Spain. Mongoose density was estimated with a generalized spatial mark-resight model including live capture-recapture data, capture-resisght data from camera-traps and telemetry data from GPS-tagged indviduals. Mongoose diet was estimated from food remains found in scats. Mongoose predation impact on rabbits and partridges was estimated by comparing the number of individuals consumed by the predator population with the estimated total prey populations., [Conclusions] The predation impact on rabbits in the area with the highest rabbit density was low and higher in the other areas. In contrast, the predation impact on partridge populations was negligible or low in all the study areas., Government of Castilla-La Mancha and the European Regional Development Fund (ERDF) [Project SBPLY/17/180501/000184]., MELOCAM_LineTran_Partridge.csv MELOCAM_LineTran_Rabbit.csv MELOCAM_Mong_Diet.csv Meloncillo.zip, Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/354863, https://doi.org/10.20350/digitalCSIC/16234
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354863
HANDLE: http://hdl.handle.net/10261/354863, https://doi.org/10.20350/digitalCSIC/16234
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354863
PMID: http://hdl.handle.net/10261/354863, https://doi.org/10.20350/digitalCSIC/16234
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354863
Ver en: http://hdl.handle.net/10261/354863, https://doi.org/10.20350/digitalCSIC/16234
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354863
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354889
Dataset. 2024
TSEB IMPLEMENTATION FOR THE MANUSCRIPT 'EVALUATING THE PRECISE GRAPEVINE WATER STRESS DETECTION USING UNMANNED AERIAL VEHICLES AND EVAPOTRANSPIRATION-BASED METRICS'
- Burchard-Levine, Vicente
- Borra-Serrano, Irene
- Peña Barragán, José Manuel
- Kustas, William P.
- Guerra, José G.
- Dorado, José
- Mesías-Ruiz, Gustavo A.
- Herrezuelo, Miguel
- Mary, Benjamin
- McKee, Lynn M.
- Castro, Ana Isabel de
- Sanchez-Élez, Sara
- Nieto, Héctor
This dataset was used to run the remote sensing-based two-source energy balance (TSEB) model to estimate evapotranspiration and related crop stress indicators using high-resolution imagery from unmanned aerial vehicles (UAVs) over a a vineyard experimental site in Madrid, Spain ('El Socorro', Belmonte de Tajo, Madrid, Spain). The dataset includes an example script to run the python implementation of TSEB (pyTSEB, https://github.com/hectornieto/pyTSEB) forced with UAV imagery and meteorological data acquired over the study site. The model outputs are also provided for the different TSEB version (TSEB-PT and TSEB-2T). These results are associated with the manuscript titled 'Evaluating the precise grapevine water stress detection using unmanned aerial vehicles and evapotranspiration-based metrics' published in Irrigation Science., The experiment was undertaken under the Digital Agriculture Technologies for Irrigation efficiency (DATI) project (2020-2024) funded by the Spanish Ministry of Science and Innovation (AEI/10.13039/501100011033) and the PRIMA EU program. It additionally received support from the EO4WUE research project (TED2021-129814B-I00) funded by MCIN/AEI/10.13039/501100011033 and by the European Union NextGenerationEU/PRTR. We also would like to thank Dr. Bill Kustas and USDA for helping with research infrastructure and scientific support., All the inputs and outputs of the two-source energy balance (TSEB) model are in the 'inputs' and 'outputs folder. Another readme file explicitely describes this data. Also described below: ## inputs ### meteo A csv file with meterological and EC measurements during UAV overpass time. ### UAV UAV imagery are stored in seperate folders for each date (in YYYYMMDD). Each input is available over the study site at 2m spatial resolution. ## outputs The model outputs are available for both TSEB-PT and TSEB-2T versions using pyTSEB (https://github.com/hectornieto/pyTSEB). In each folder, both Main ('Main') and ancillary ('Anc') output data is made available., Peer reviewed
Proyecto: AEI//TED2021-129814B-I00
DOI: http://hdl.handle.net/10261/354889, https://doi.org/10.20350/digitalCSIC/16235
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354889
HANDLE: http://hdl.handle.net/10261/354889, https://doi.org/10.20350/digitalCSIC/16235
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354889
PMID: http://hdl.handle.net/10261/354889, https://doi.org/10.20350/digitalCSIC/16235
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354889
Ver en: http://hdl.handle.net/10261/354889, https://doi.org/10.20350/digitalCSIC/16235
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354889
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354912
Dataset. 2024
NEIGRA - NORTH-EAST IBERIAN GRANITOIDS DATABASE. GEOCHEMISTRY OF GRANITOIDS AND ORTHOGNEISSES FROM THE PYRENEES AND THE CATALAN COASTAL RANGES
- González-Esvertit, Eloi
- Canals, Angels
- Prieto-Torrell, Claudia
- Bons, Paul D.
- Llorens, Maria-Gema
- Casas, Josep Maria
- Aguilar, Carmen
- Neilson, Joyce
- Elburg, Marlina A.
- Gomez-Rivas, Enrique
Geochemical data of the Variscan gneisses derived from pre-Variscan intrusives and late-Variscan granitoids in the Pyrenees and the Catalan Coastal Ranges were obtained from two main sources: (1) individually mined from published articles and unpublished PhD theses (Autran et al., 1970; Guitard, 1970; Enrique, 1989; Soler and Enrique, 1989; Enrique, 1990; Soler, 1990; Gleizes, 1992; Debon et al., 1996; Arranz, 1997; Guitard et al., 1998b, 1998b; Roberts et al., 2000; Vilà et al., 2005; Casas et al., 2010; Navidad et al., 2010; Druguet et al., 2014; Laumonier et al., 2015; Navidad et al., 2018; Lemirre et al., 2019; Álvaro et al., 2021; Liesa et al., 2021; Casas et al., 2024), and (2) the GEOROC Database (Geochemistry of Rocks of the Oceans and Continents, Göttingen University, https://georoc.eu/; last access: 03/2024; Lehnert et al., 2000). Other Findable, Accessible, Interoperable, and Reusable (FAIR; Wilkinson et al., 2016) databases were searched using geographic and lithogeochemical constrains, yielding no results. The mined data were curated and classified based on the analysed rock types, ages, regional tectonic setting, and mode of occurrence in outcrop, resulting in more than 600 entries that are associated with up to 66 data fields. Associated with each entry are generic, descriptive and informative fields (Sample ID, Unit/Massif, Rock category, Rock details, Outcrop description, and References), major element oxide abundances (SiO2, Al2O3, FeOT, Fe2O3T, MnO, MgO, CaO, Na2O, K2O, TiO2, P2O5, and LOI), and trace element concentrations (Ag, As, Ba, Be, Bi, Co, Cr, Cs, Cu, Ga, Ge, Hf, In, Mo, Nb, Ni, Pb, Rb, Sb, Sc, Sn, Sr, Ta, Th, Tl, U, V, W, Y, Zn, Zr, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu). The resulting database, named NEIGRA (North-East Iberian GRAnitoids), represents the first Open-Access compilation of granite and orthogneiss geochemical data in the Pyrenees and the Catalan Coastal Ranges., This work was funded by DGICYT Projects PID2021-122467NB-C22 and PID2021-125585NB-I00 (MCIN/AEI/FEDER-UE/10.13039/501100011033) and PID2020-118999GB-I00 (MCIN/AEI/10.13039/501100011033), and by the Sedimentary Geology Research Group (2021 SGR 00349). EGE acknowledges the funding provided by the Geological Society of London (GSL) Student Research Grants and the PhD grants funded by Generalitat de Catalunya and the European Social Fund (2021 FI_B 00165 and 2022 FI_B1 00043). CPT acknowledges the PhD grant 2021 FISDU 00347 funded by Generalitat de Catalunya. EGR acknowledges funding provided by the Spanish Ministry of Science, Innovation and Universities (“Ramón y Cajal” fellowship RYC2018-026335-I). CA is grateful to the GEOXis Reseach Group (2021 SGR 00262) and the projects PID2020-117332GB-C21 (USAL) and PID2020-117332GB-C22 (UCM) funded by MCIN/AEI/10.13039/501100011033., 00_NEIGRA_Readme; NEIGRA_North-East Iberian GRAnitoids Database, Peer reviewed
DOI: http://hdl.handle.net/10261/354912, https://doi.org/10.20350/digitalCSIC/16236
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354912
HANDLE: http://hdl.handle.net/10261/354912, https://doi.org/10.20350/digitalCSIC/16236
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354912
PMID: http://hdl.handle.net/10261/354912, https://doi.org/10.20350/digitalCSIC/16236
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354912
Ver en: http://hdl.handle.net/10261/354912, https://doi.org/10.20350/digitalCSIC/16236
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354912
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354926
Dataset. 2024
EXPERIMENTAL DATA FILES OF MANUSCRIPT A COMPARATIVE STUDY OF VEGETABLE FLOURS AS ALTERNATIVE PROTEIN SOURCES OF INTEREST FOR FOOD INDUSTRY
- Badia Olmos, Celia
- Sentandreu, Miguel Ángel
- Laguna, Laura
- Tárrega, Amparo
- Sentandreu, Enrique
LC-MS data files in .mgf format of bands listed in Table S1 and Table S2 of manuscript., IATA-CSIC (DESPEGA IATA-4 internal project); Spanish government MCIN/AEI for projects RTI2018-096162-R-C22 and PID2019-107723RB-C21 and Center of Excellence Accreditation Severo Ochoa (CEX2021-001189-S/MCIN/AEI/10.13039/501100011033), A-MGF_TableS1: LC-MS data files in .mgf format of bands (from 1 to 50) listed in Table S1; B-MGF_TableS2: LC-MS data files in .mgf format of bands (from 1 to 15) listed in Table S2, Peer reviewed
DOI: http://hdl.handle.net/10261/354926, https://doi.org/10.20350/digitalCSIC/16237
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354926
HANDLE: http://hdl.handle.net/10261/354926, https://doi.org/10.20350/digitalCSIC/16237
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354926
PMID: http://hdl.handle.net/10261/354926, https://doi.org/10.20350/digitalCSIC/16237
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354926
Ver en: http://hdl.handle.net/10261/354926, https://doi.org/10.20350/digitalCSIC/16237
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354926
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354930
Dataset. 2024
SUPPORTING INFORMATION FOR SELECTIVE DETECTION OF ACTIVE EXTRACELLULAR GRANZYME A BY USING A NOVEL FLUORESCENT IMMUNOPROBE WITH APPLICATION TO INFLAMMATORY DISEASES [DATASET]
- Senán Salinas, Ana
- Comas, Laura
- Esteban, Patricia
- Garzón, Marcela
- Santiago, Llipsy
- Domingo, María Pilar
- Ramírez-Labrada, Ariel
- Paño, José Ramón
- Vendrell, Marc
- Pardo, Julián
- Arias, Maykel
- Gálvez Buerba, Eva Mª
Under a Creative Commons license CC BY 4.0., Supplementary table 1. Concentration of trypsin-like proteases presenting similar enzyme activity using a common substrate.-- The substrate Nɑ-CBZ-L-Lysine thiobenzyl ester hydrochloride was incubated with hGzmA (66.7 nM), hGzmK (2.4 nM), mGzmA (4 nm), Kallikrein (3.7 nM), Plasmin (4.3 nM) and Trypsin (0.4 nM) for 30 min as described in methods. The absorbance was measured. The values obtained at each time were subtracted from the substrate signal in the absence of enzymes. Data represent the mean of three independent replicates., Peer reviewed
Proyecto: //
DOI: http://hdl.handle.net/10261/354930
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354930
HANDLE: http://hdl.handle.net/10261/354930
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354930
PMID: http://hdl.handle.net/10261/354930
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354930
Ver en: http://hdl.handle.net/10261/354930
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354930
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354968
Dataset. 2024
SUPPLEMENTARY MATERIAL FOR USE OF A HIGH-ENTROPY OXIDE AS AN OXYGEN CARRIER FOR CHEMICAL LOOPING [DATASET]
- Adánez-Rubio, Iñaki
- Izquierdo Pantoja, María Teresa
- Brorsson, Joakim
- Mei, Daofeng
- Mattisson, Tobias
- Adánez Elorza, Juan
1. Batch fluidized bed methodology: The following methodology was used during the fluidized bed testing:
i. The reactor was heated up in an N2 stream of 850 ml/min at a rate of 20 °C /min until the OC started to release O2, then the gas was switched to 11 vol% of O2 with N2 for balance. Note that the same mixture of air and N2 was used to regenerate the oxygen carrier (OC) after the Chemical Looping Oxygen Uncoupling (CLOU) and syngas reactions. Once the temperature and O2 concentration had stabilized, the redox cycle was initiated.
ii. Oxygen release and regeneration (CLOU) was tested in an N2 atmosphere for 300 s, or until the concentration of oxygen released dropped to 0. Specifically, the oxygen concentration was recorded together with the total amount of oxygen released and the conversion of the high entropy oxygen carrier (HEOC). During regeneration, it was determined whether the HEOC was able to capture all of the previously released oxygen and how much time this required at each temperature.
iii. After the oxygen release and regeneration cycles, redox reactivity experiments were performed at 950 °C using syngas (50 vol% H2 and 50 vol% CO) as the reactant. During the redox cycles the stream initially consisted of inert gas (120 s) followed by syngas (10-20 s) and inert gas (120 s) before finally being oxidized in an air and N2 mixture (until complete regeneration). The regeneration and oxidation was carried out in the same way as in the CLOU cycles. During these experiments, the reactivity of the OC in the presence of syngas and its capacity for converting syngas to CO2 and H2O were analyzed.
iv. The ability of the HEOC to release oxygen and regenerate was retested after the syngas experiments. For this purpose, the experiments shown in point i were performed again and the results obtained before and after syngas combustion were compared.
To a achieve fast cooling of the bed the furnace was opened at the end of the last cycle, which led to a cool down from 950 °C to 500 °C at a rate of 90 °C/min. The gas used to fluidize the bed during the cooling period is the same as in the previous oxidation step.-- 2. HEOC Reactivity in TGA and Batch Fluidized Bed Reactor: 2.1 TGA reactivity. As can be seen from Figure S1, the oxidation, after reduction with either H2 or CLOU, shows a two step behavior in the reactivity, with one very fast initial step followed by a slower step, that cannot be attributed to different redox reactions. Even so, the OC conversion was complete for both redox reactions and the reactivity was maintained during the redox cycles. The CH4 reactivity was measured at 800 °C by reduction with a gas mixture containing 15 % CH4 and 20 % H2O. The reduction reactivity (Figure S2a) increased in a single step and reached the same value independent of the calcination temperature. The oxidation was complete and fast (see Figure S2b) and the OC conversion was maintained over the redox cycles. Still, the reactivities with CH4 were not remarkable compared to other OCs 18.-- 3. HEOC characterization:
3.1 SEM-EDX
Figure S7 shows SEM images and EDX mappings of the fresh HEOC_1100 (Figure 13a,b,c) as well as oxidized particles from the batch fluidized bed after 30h of operation and a cool down from 950 °C, at a rate of 90 °C/min (Figure S7d,e,f). It is apparent that the particles do not show any shape modifications after use in the batch fluidized bed reactor. In addition, a homogeneous distribution of the five elements can, in general, be observed inside the particles. However, there are subdomains enriched in Mg (red zones in Figure S7c,f), which are more frequent in the fresh particles.-- Under a Creative Commons license CC BY NC ND 4.0., 1. Batch fluidized bed methodology. 2. HEOC Reactivity in TGA and Batch Fluidized Bed Reactor: 2.1 TGA reactivity. 2.2 Batch fluidized bed reactivity. Syngas combustion cycles. 3. HEOC characterization: 3.1 SEM-EDX. Mg-enriched subdomains, This work was partiatially funded by the Swedish Research Council (2020–03487) and the Gobierno de Aragón – Dpto. de Ciencia, Universidad y Sociedad del Conocimiento - Project LMP166_21. I. Adánez-Rubio acknowledges for “Juan de la Cierva” Program (Grant IJC2019-038987-I funded by MCIN/AEI/10.13039/501100011033) and for the “José Castillejo” international mobility program for young researchers (CAS21/00200)., Peer reviewed
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DOI: http://hdl.handle.net/10261/354968
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354968
HANDLE: http://hdl.handle.net/10261/354968
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354968
PMID: http://hdl.handle.net/10261/354968
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354968
Ver en: http://hdl.handle.net/10261/354968
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/354968
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