cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15151/esrf-es-1531407309
title: The oxidation state of the Earth's deep mantle

description: During crystallisation, a small proportion of diamonds (no more than 2%), captures tiny inclusions of other minerals. These mineral inclusions sometimes derive from great depths and are our only window into the Earth’s transition zone (410-660 km) and the lower mantle (660-2900 km), regions of our planet, impossible to sample directly. 
Here we propose to implement the Synchrotron Mössbauer Source (beamline ID14) in order to measure Fe3+/Fe2+ in the mineral inclusions (ferropericlase, Ca-perovskite, majoritic garnet) within two large diamonds and also in separate 10 majoritic garnets, all from Juina, Brazil. The second aim of this proposal is to use these data for devising an oxygen barometer for the deep mantle, that currently does not exist.
This will have important implications to the mantle rheology and transport properties as well as to mantle convection and material circulation between the upper and lower mantle.
DOI: 10.15151/esrf-es-1531407670
title: Transient Photo-structural Effects in Amorphous Chalcogenides

description: We propose here to perform a pump and probe X-ray diffraction experiment to study the structural changes induced by laser illumination. Chalcogenide glasses show numerous interesting, and often puzzling, effects when irradiated with a laser (i.e., refractive index and density variations). Although the phenomenology of these effects has been studied and discussed, their microscopic origin is still debated. The majority of the proposed models postulates that the impinging photons trigger atomic rearrangement, but there are not detailed structural studies. With the proposed experiment we aim at understanding the structural variations caused by the photons and their role on the photoinduced phenomena.
DOI: 10.15468/dl.ub4nwc
title: Occurrence Download

description: A dataset containing 1988 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Alestes Müller & Troschel, 1844"
 ]
}

 The dataset includes 1988 records from 60 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0008383-230918134249559/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1531407773
title: Kirkendall porosity in joints of pure Ni/Ni-base superalloy CMSX-4 annealed at high temperature

description: Interdiffusion occurs when materials with different compositions are exposed to high temperatures for extended periods of time. In a diffusion couple of pure Ni and Ni-base superalloy CMSX-4 joined by diffusion welding, there's a flux of elements and vacancies. While CMSX-4's alloying elements diffuse into pure Ni, a reverse flux of Ni and vacancies occurs. This leads to Kirkendall-induced porosity near the joint interface, potentially causing joint failure. The porosity evolution depends on material composition, crystallography, temperature, and stress duration. The study aims to investigate similar conditions as a previous study (ME 1513) but with a Ni/CMSX-4 joint with different crystallographic orientations and annealing times. Combining the experimental µ-tomography data with the phase-field and continuum simulations should provide information into the complicated mechanisms of void formation, evolution and kinetics of the kirkendall-porosity.
DOI: 10.15468/dl.p357g4
title: Occurrence Download

description: A dataset containing 8347 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Roadkill"
 ]
}

 The dataset includes 8347 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0306364-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1447600011
title: Dynamical processes in out-of-equilibrium materials at extreme conditions

description: The principle aim of this project is to perform new ground breaking experiments in glass formers at extreme conditions and in a previously unexplored dynamical range by using X-ray Photon Correlation Spectroscopy (XPCS) at high energy and in combination with in-situ high pressure and high temperature devices. This takes benefits from the current EBS upgrade of ESRF which has revolutionized the XPCS technique thanks to a 100 times higher coherent flux with the extension into hard x-rays up to 25 keV. 
The knowledge of the relaxation processes occurring in glass formers and their evolution under applied constraints like pressure and temperature is important not only from the theoretical point of view, but also for technological applications as it may provide important receipes for improving their stability and properties during processing and operation. The extension of XPCS to studies at extreme conditions will be of interest of many scientist working in different fields.
DOI: 10.15151/esrf-es-1519525638
title: Bridging the gap between cellular and whole body imaging using Hierarchical Phase-Contrast Tomography: HiP-CT

description: Humans and other large organisms are three-dimensional multiscale biological systems where large scale function and structure are dependent on the macrostructure’s interconnectivity down to the cellular and subcellular level. Using the exceptional coherence provided by the ESRF-EBS, we have demonstrated that propagation-based phase-contrast can effectively decouple resolution from specimen size in soft tissue, obtaining 1.4 micron voxel resolution in 150 mm diameter human organs. Through this Long Term Proposal (LTP) we will develop the techniques required to image whole human and animal bodies ex vivo at 25 micron resolution, zooming to sub-micron voxels (0.7micron) locally, resolving sub-cellular structures through hard- and soft-tissue. Resolving how the micro (sub-cellular) interacts with the macro (whole organism) across length scales will provide all new insights into biological and biomedical function. This is true for both healthy and pathological system level behaviour.
DOI: 10.15468/dl.8z72y2
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Spermacoce garuensis (K.Krause) Govaerts"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0138787-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1530268592
title: Studying the role of Si particle size distribution in Si-anode based solid-state batteries by operando X-ray diffraction

description: Silicon is one of the most promising anode materials for next-generation solid-state batteries (SSBs), due to its very high specific capacity. Although SSBs utilizing silicon anodes show broad and attractive application prospects, current results are still in an infant state in terms of electrochemical performance, characterization, and mechanistic understanding. Hence, this study focuses on the role of Si particle size distribution in a composite anode on the electrochemical performance of SSBs, which is of high relevance for future applications in, e.g. EVs. Therefore, we will use an operando set-up, recently developed together with the ESRF beamline stuff, to study how the particle size distribution of Si affects the phase and microstructural evolution and mechanical degradation as a function of capacity utilizations, applied current, and stack pressure.
DOI: 10.15468/dl.km58gm
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Orthotaenia undulana (Denis & Schiffermüller), 1775",
 {
 "not" : {
 "DatasetKey" : [
 "is Global database of alien macrofungi"
 ]
 }
 },
 {
 "or" : [
 "Country is Poland",
 "Country is Poland"
 ]
 }
 ]
}

 The dataset includes 8 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0385564-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1530268774
title: In-situ grazing incidence X-ray diffraction on new polymer blends and multilayers for organic solar cells under uniaxial tensile stretching

description: We aim to investigate the structural properties of new blend active layers with polymer acceptors composing stretchable organic solar cells, as well as the impact of intermediate layers and electrodes on the mechanical behavior of the whole stacks. We will study binary and ternary polymer blend behaviour in multilayers and devices for outdoor applications, and we will focus on the relationship between the evolution of crystallinity, the mechanical and the electrical behavior of semi-conducting polymer thin layers, buffer layers (PEDOT:PSS, ZnO) and solar cell stacks during mechanical loading. The structural properties of the individual materials as well as their properties when incorporated in a device stack will be investigated by in situ grazing incidence X-ray diffraction under applied uniaxial tensile stretching. The structural behavior will be linked to the electronic properties of the layers and the entire cell, in order to figure out more stretch-resilient flexible devices
DOI: 10.15151/esrf-es-1530269393
title: Metal sites in state-of-the-art carbon nitride-based low-Pt electrocatalyst for low temperature fuel cell

description: A XAS experiment is proposed on a new family of Pt-based electrocatalysts for oxygen reduction reaction (ORR) in low-T fuel cell. This family exhibits a hierarchical core−shell support, wherein a carbon nitride shell stabilizes the catalyst sites in unique coordination nests. The catalyst is in form of Pt-Ni alloy clusters (size 1-5 nm), and the specific synthesis procedure ensures exceptional performances, since the strong catalyst-support interactions, likely mediated by N atoms, inhibit the leaching of metal species and particle agglomeration during operation. The aim is to measure the local order around the metal catalyst, characterizing both the nanoalloy and the cluster-matrix interaction, as a function of the Pt fraction and of the synthesis conditions (easily scalable for industrial fabrication), to understand how it is related to the ORRs performance.
DOI: 10.15151/esrf-es-1530269693
title: Direct derivation of oxidation states from single crystal X-ray diffraction experiments

description: Based on the results of our previous ESRF experiments, we were able to provide proof of concept for refining anomalous dispersion parameters against single crystal diffraction data near the K-edge of molybdenum in the most widely used program for small molecule crystallography, Olex2.Reliabililty tests with different crystals with different elements, such as gold and uranium, resulted in good and reproducible values. Surprisingly the refined anomalous dispersion parameters are sometimes far from the tabulated ones and very sensitive for distinct oxidation stated of metal atoms even far away from the absorption edges. This proposal aims to benchmark our newly developed method for a wider range of elements and to evaluate the discrimination of oxidation states in mixed-valent compounds.
DOI: 10.15468/dl.ns6mub
title: Occurrence Download

description: A dataset containing 7 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Telipogon vasquezii Dodson"
 ]
}

 The dataset includes 7 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010570-230810091245214/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1530269960
title: Operando XAS and XRD studies on the stability of Ni-Pt alloys during daily start-up and shut-down operation of small scale CH4 reformers

description: In this study we focus at understanding the impact of conventional versus advanced preparation methods on the structural changes occurring in bimetallic Ni-Pt catalysts during steam reforming of methane. For this purpose, we would like to perform systematic operando XAS and XRD experiments during different reaction conditions simulating daily start-up and shut-down (DSS) operation (variation in temperature and gas atmosphere). We plan to monitor the structural evolution of the active species by XAS measurements at the Ni K and Pt L3 edges, while the overall phase changes due to de-alloying and re-incorporation in the support material will be tracked by X-ray diffraction measurements at selected stages of the experiments. After focusing on the support role in our previous proposal (CH-6791, to be performed in October 2023), we now aim to elucidate the effect of the Ni-Pt alloying degree on catalyst activity and stability.
DOI: 10.15468/dl.898pk9
title: Occurrence Download

description: A dataset containing 7507 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Dolichovespula saxonica (Fabricius, 1793))",
 "Geometry POLYGON((-9.36035 44.71551,-10.59082 42.81152,-11.82129 36.80928,-7.69043 36.17336,-3.38379 35.88905,3.12012 38.13456,9.18457 38.20366,11.7334 37.16032,12.78809 34.74161,17.09473 33.79741, 23.15918 34.23451,30.10254 32.62087,33.2666 32.99024,35.72754 35.03,33.00293 35.53223,28.69629 35.17381,28.34473 36.31513,25.7959 37.50973,24.91699 39.90974,28.78418 40.6473,30.71777 41.17865,36.87012 45.213,38.18848 46.98025,38.71582 47.7541,39.94629 47.93107,40.20996 49.61071,37.0459 50.34546,35.72754 50.40152,33.79395 52.26816,31.68457 51.94426,31.4209 53.27835,32.56348 53.43572,30.98145 54.77535,30.89355 55.52863,28.43262 56.02295,27.20215 57.65716,27.37793 58.30949,27.90527 59.17593,29.66309 59.88894,27.6416 60.58697,31.50879 62.75473,28.78418 69.83962,30.89355 70.28912,29.22363 71.55274,21.75293 71.30079,14.28223 70.14036,11.38184 67.47492,4.87793 63.66576,-5.53711 71.52491,-10.63477 71.69129,-21.5332 67.74276,-28.56445 65.36684,-24.3457 61.35461,-9.36035 44.71551))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1980",
 "Year is less than or equal to 2021"
 ]
}

 The dataset includes 7507 records from 101 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0239484-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1530271901
title: Study of the deformation potential in InGaN nanostructures on porous GaN

description: Our aim in this project is to experimentally determine the deformation potential of the InxGa1-xN alloy (“InGaN”). Until now this task has been elusive due to the convoluted nature of luminescence from InGaN heterostructures. Our approach is to allow for elastic relaxation of InGaN by forming InGaN nanostructures on nanoporous GaN. Making use of wide InGaN quantum wells (QWs) on these compliant pseudo-substrates leads to the absence of quantum confined Stark effect (QCSE)1 compositional pulling effect2. We will use the ESRF light source to map the strain distribution in InGaN nanostructures and correlate it with the observed shifts of the luminescence. This way, we will determine the influence of the deformation potential.
DOI: 10.15151/esrf-es-1530272725
title: Residual stresses in healing bone in skeletally aging mice

description: Previous work using diffraction has shown that the nanocrystal c-lattice parameter in mouse bones can vary due to stresses induced by shrinkage or expansion of collagen in the nanocomposite. Here we propose to use diffraction mapping to examine the effects of dehydration on nanocrystal deformation in different bone tissue types of healing bone, namely callus and cortical bone tissues. The c lattice parameter will be determined in relation to bone healing sites to assess the effects of changes to the levels of mineralization in murine bone samples. By measuring lattice constants before and after exposure to collagen-destroying radiation, residual strain distributions will be determined. Results will help us understand the role and emerence of residual strains in the natural tissue and to asses to what extent, tissue healing modulates these strains.
DOI: 10.15151/esrf-es-1530273177
title: Identification of location and speciation of CeO2 micro and nanoparticles in radish and lettuce.

description: After nuclear accident, non-soluble radioactive particles serve as an additional source for human exposure to radioactivity, when transferred to agricultural
crops. The foliar transfer mechanisms of such source into plants are poorly assessed by risk assessment tools which includes retention, incorporation and
translocation. The transfer is tuned as a function of plant and particles interaction. Thus, properties of particles like size and charge, and those of plants like
stomatal size, leaf hairs and cuticle thickness will determine fluxes distributed on and within plant, that would be able to translocate later.
Therefore, because of the lack of data regarding the transfer of non-soluble particle, CeO2 particle with relevant size range (10 nm- 50 nm and 460 nm) will be
used as proxy to non-reactive particles for plants exposure. This approach will allow us to identify the location and speciation of particles using multi-X-ray techniques like μXRF and μXANES on the ID21 beamline.
DOI: 10.15468/dl.eerp7m
title: Occurrence Download

description: A dataset containing 183 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Trigonella cretica (L.) Boiss."
 ]
}

 The dataset includes 183 records from 32 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010595-230810091245214/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1530273747
title: Study of the orbital moment in van der Waals insulator VBr3

description: The proposal’s target is to measure high magnetic field X-ray magnetic circular dichroism (XMCD) of vanadium (V) at K-edge in two-dimensional van der Waals (vdW) antiferromagnet (AFM) VBr3 to quantitatively probe the orbital occupation in a polarized state. Confirmation of a non-zero orbital moment in VBr3 is crucial for understanding the origin of strong magnetocrystalline anisotropy. The XMCD signal at the V K-edge (not directly involving d-bands) originates from a spin-orbit coupling (SOC) and non-zero OM in the final p-band and possible hybridization between p and d-bands. Therefore, one might expect a robust K-edge XMCD signal if OM in VBr3 is not quenched, making this technique well-suited for our study.
DOI: 10.15151/esrf-es-1530274010
title: In-situ anomalous X-ray diffraction on the working electrode of electric double layer capacitors

description: We propose to use in-situ anomalous X-ray diffraction to study the working electrode of an electric double layer capacitor. Varying the photon energy at the absorption edge of the electrolyte ions will allow us to obtain ion-specific information and extracting the pair distribution functions, specifically ion-ion, ion-water, and ion-carbon interactions.
DOI: 10.15468/dl.c39vxv
title: Occurrence Download

description: A dataset containing 4256 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Osteopilus ocellatus (Linnaeus, 1758)"
 ]
}

 The dataset includes 4256 records from 58 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0296556-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1530274790
title: Synchrotron X-ray Diffraction Microtomography and X-ray Tomography for the Evaluation of Combined Ammonium Oxalate and Ammonium Phosphate Tr

description: This research proposes to employ advanced X-ray diffraction microtomography and x-ray microtomography to investigate the effects induced by combined ammonium oxalate (AmOx) and ammonium phosphate (DAP) treatments in the conservation of carbonate stones in Cultural Heritage. In this research, we will explore the potential of AmOx and DAP treatment on Noto limestone (Val di Noto, UNESCO’s World Heritage List) which is a porous calcareous material composed of calcite in micritic size. By non-destructively studying the distribution of newly formed phases and their interaction with stone microstructures, we aim to enhance our understanding of stone conservation techniques and ensure the long-term durability of cultural artifacts. Results are expected to provide crucial insights into phase identification, crystallinity, voids, and treatment-microstructure interactions, advancing the knowledge in calcite stone conservation and supporting the application of inorganic treatments on worksites.
DOI: 10.15151/esrf-es-1530280100
title: Unravelling the kinetics of active state formation of V,Fe-containing Co3-xMxO4 oxygen evolution electrocatalysts using time-resolved operan

description: The alkaline water splitting and oxygen evolution reaction (OER) using Co-based electrocatalysts is a promising approach to produce green H2 using electricity from renewable energies. Recent studies showed that the Co3O4 active state formation is linked to a reversible deactivation which opens up strategies to apply potentiodynamic reaction conditions rejuvenating the catalyst. But before a detailed operando understanding of the active state formation dynamics is required. In this experiment, we aim to clarify those for highly active V,Fe-containing Co3-xMxO4 electrocatalysts using operando time-resolved high-energy X-ray diffraction (HE-XRD) and link the structural findings to the catalytic deactivation under OER conditions. Thereby, we will reveal how the reversible (near-surface) restructuring as well as the potential-induced lattice strain is linked to the catalytic activity and will contribute to the understanding of decisive interfacial properties to improve electrocatalysts.
DOI: 10.15468/dl.2nhwda
title: Occurrence Download

description: A dataset containing 783 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Taraxacum quadrans H.Øllg."
 ]
}

 The dataset includes 783 records from 33 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0008176-230810091245214/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15151/esrf-es-1530287774
title: Detoxification of methylmecury in dolphins

description: We propose to study how methylmercury is detoxified in the muscles of dolphins from the east coast of Florida. The identity and proportions of the Hg species will be obtained using Hg L3-edge HERFD-XANES spectroscopy, and the metabolic demethylation pathways will be obtained by inverting the Hg speciation and the 202Hg and 198Hg isotopic data. Results will allow us to assess if the animals suffer from Hg toxicity, which typically impair swimming bahavior and their survival.