cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.rzbhyy
title: Occurrence Download

description: A dataset containing 61667 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Galinsoga parviflora Cav."
 ]
}

 The dataset includes 61667 records from 736 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077228-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.jej8kf
title: Occurrence Download

description: A dataset containing 530 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Acanthogorgiidae"
 ]
}

 The dataset includes 530 records from 29 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077235-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.nbrm26
title: Occurrence Download

description: A dataset containing 322 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Ficus palmata Forssk.)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 322 records from 41 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077236-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.rj96jq
title: Occurrence Download

description: A dataset listing the 3 species recorded in GBIF matching the query:
{
 "and" : [
 "Continent is Africa",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Salix fragilis L."
 ]
}

 The dataset's 3 records were derived from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077229-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.njd2yh
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Arthrocnemum macrostachyum Torr.)",
 "Country is one of (Spain)",
 "BasisOfRecord is one of (Specimen, Literature Occurrence)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077237-240506114902167/datasets/export for details.
DOI: 10.15468/dl.frd4fb
title: Occurrence Download

description: A dataset containing 1559 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Ficus benghalensis L.)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 1559 records from 90 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077238-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.buevjr
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Peru",
 "TaxonKey is Zeiformes",
 "Year 1980-2024"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077239-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.6084/m9.figshare.26013523.v1
title: 3D S-wave Velocity model and sediments thickness in XANA.

description: 3D S-wave Velocity model and sediments thickness in XANA.
DOI: 10.15468/dl.xxe3ss
title: Occurrence Download

description: A dataset containing 2719 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Ficus sycomorus L.)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 2719 records from 136 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077240-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.w3wxkq
title: Occurrence Download

description: A dataset containing 8792 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Ficus americana Aubl.)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 8792 records from 236 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077241-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.besczr
title: Occurrence Download

description: A dataset containing 53 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Acrossotidae"
 ]
}

 The dataset includes 53 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077244-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.95a49f
title: Occurrence Download

description: A dataset containing 147 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Acrophytidae"
 ]
}

 The dataset includes 147 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077243-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.xyusm2
title: Occurrence Download

description: A dataset containing 5038 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Ficus rubiginosa Desf. ex Vent.)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 5038 records from 68 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077246-240506114902167/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-1581844247
title: Universities of St Andrews, Dundee, Glasgow, and Aberdeen

description: The Dundee/St Andrews/Glasgow/Aberdeen BAG research interests fall into two broad areas. Firstly, we use structural information to understand mechanisms of fundamental biological processes, protein engineering, enzymes, and biological chemistry. Secondly, we utilize structural insights to guide target selection and development of lead compounds for drug development. Fundamental insights obtained into biological processes are often closely coupled to target identification and development of tools, reagents, or inhibitors, which feed into a range of biomedical applications. Our research relies heavily on high quality and reliable synchrotron radiation, along with state-of-the-art optics, detectors, sample changers, and computation, to support determination of new structures, as well as collect high resolution diffraction data to provide the level of accuracy important in structure-guided drug design.
DOI: 10.15151/esrf-es-1655375746
title: The Israeli BAG

description: The Israeli BAG plans to increase its usage of ESRF in the coming year. We are having more projects that utilize the ESRF single crystal capabilities as well as the continuous increase in SAXS time. As mentioned last year It is not trivial to provide a summary that covers all research topics encompassed by the BAG. We expect some BAG members to resume using ESRF after utilizing other facilities. As much as we appreciate the immense capacities of ESRF, the majority of BAG members are discontent (to say the least) regarding the post-shutdown/Covid-19 travel regulations imposed by the management. It seems that bureaucracy rather than common sense is prevailing and an accompanying letter will be submitted adjoined to the proposal/report. I have not included any requests for ID29 as the BAG members have to become more familiarized with the facility. As for some of the BAG projects, a detailed description is provided in the Global Summary below.
DOI: 10.15151/esrf-es-1671354655
title: In-situ characterization of 2D hybrid perovskite under illumination

description: Layered hybrid metal halide perovskites are of increasing relevance for various optoelectronic applications, particularly for modern photovoltaics. The aim of this proposal is to gain detailed structural insight into the series of new layered hybrid metal halide perovskite materials incorporating photoactive organic components upon irradiation. We will determine their structural properties, the contribution of different phases, as well as the corresponding orientation relative to the conductive substrate, which is relevant to their application in optoelectronics. In addition, we will study the changes of their structural properties in response to UV light. The combined results from X-ray scattering and current-voltage measurements will reveal critical factors for their operation in functional devices for renewable energy conversion in photovoltaics.
DOI: 10.15151/esrf-es-1671355592
title: Study of zirconium-uranium bearing silicates and oxides as phases of interest for corium

description: This proposal aims to investigate Zr1-xUxSiO4 and Zr1-xUxO2 solid solutions prepared by wet chemistry routes (hydroxide precipitation or hydrothermal conversion) then potentially purified by selective dissolution of secondary phases. Solid solutions of Zr1-xUxSiO4 with U contents higher than 70 mol.% have been selected to precise the maximum solubility of U in the zircon phase. HR-PXRD measurement would be necessary to determine the unit cell variation and the potential formation of secondary phases at the very low level.
The whole solid solutions of Zr1-xUxO2 will be examined to precise the relation between monoclinic and cubic forms for U low contents, to follow the incorporation of U4+ in ZrO2 through the establishment of a precise Vegard’s rule between ZrO2 and UO2 and to evidence potential fluctuations in the chemical composition at the micro-domain’s scale. By this way, it will be possible to validate the wet chemistry route developed for this king of solid solutions.
DOI: 10.15151/esrf-es-1671357443
title: Molecular and supra-molecular control of the dynamics of muscle relaxation following action potential stimulation

description: We will exploit the unique capability of ID02 to measure µm- to nm- scale X-ray reflections with millisecond time resolution to determine both the molecular and supra-molecular mechanisms that control the dynamics of relaxation of intact skeletal muscles following single action potential stimulation in near-physiological conditions that mimic the performance of the muscle-tendon complex in vivo. On the molecular scale, we will measure structural changes in both the thick (myosin-containing) and thin (actin-containing) filaments. On the supra-molecular scale, we will characterize the inter-sarcomere dynamics that limit the rate of relaxation in vivo, and relate those changes in sarcomere length to simultaneous conformational changes in the thick and thin filaments. The results will underpin the development of new therapeutics for muscle weakness.
DOI: 10.15151/esrf-es-1671359888
title: Fast Synchrotron X-ray Computed Tomography of Zinc Dendrite Growth

description: The zinc-ion battery (ZIB) is one of the promising candidates for next-generation energy storage devices beyond lithium-ion technology owing to the earth’s abundance of Zn materials, low cost, moderate toxicity, and high volumetric energy density (5855 mAh cm-3). However, to date, technical challenges remain to hinder the practical application of ZIBs. One of the most notorious issues is dendritic formation during the battery operations. The over-growth of Zn dendrites may pierce the separator, and cause battery short-circuiting and failure. Herein, we propose to use the specially designed Swagelok-type Zn cells with various electrolyte for X-ray imaging observations. We aim to dynamically characterise the Zn deposition and dissolution by fast synchrotron X-ray computed tomography (SXCT), thus providing crucial information for battery optimisation. The results will contribute to developing the next-generation ZIBs with longer life and higher performance.
DOI: 10.15151/esrf-es-1669442480
title: Evaluation of novel neuroprotective strategies in the treatment of retinal ganglion cell degeneration by multiscale 3D neuroimaging

description: The project aims at studying the potential therapeutic effects of Idebenone and the mGlu1 receptor antagonist JNJ16259685 in an experimental model of glaucoma by using a high-sensitivity microscopic approach based on X-ray phase-contrast micro-CT (X-PCI-CT) for multiscale, post-mortem 3D virtual-histology. Neuroprotection is demanded in eye disorders such as glaucoma, where death of retinal ganglion cells (RGC) and neurodegeneration along the nuclei of the visual pathway take place through different mechanisms. Mitochondria are involved in cellular processes ranging from metabolic functions to calcium homeostasis and the regulation of cell death. Activation of mGlu1 metabotropic glutamate receptors has an important role in excitotoxic degeneration of RGCs. Targeting mitochondria and mGlu1 receptors could be a potential disease modifying treatment for optic neuropathies where no treatment is currently available.
DOI: 10.15151/esrf-es-1669464133
title: Revisiting the P/T phase diagram of niobium, a key element for modern high-tech industry

description: Niobium (Nb) exhibits a remarkable high thermal stability and electronic properties. Despite its multiple applications in our modern industry, large uncertainties remain on its phase diagram including its high-pressure melting temperature and solid-solid phase transitions. To better understand the structural and electronic changes in Nb at relevant P/T conditions, we propose in this project to use time-resolved pulsed laser heating nano-XAS/XRD studies at the new ID24-DCM and ID27 beamlines of the ESRF-EBS, which may allow overcoming previous reported experimental limitations. The yet poorly explored electronic properties of pure Nb at extreme conditions could be of critical importance for potential new applications and industrial uses.
DOI: 10.15151/esrf-es-1674276228
title: Untangling the knots of the arthropod tree of life: three-dimensional insights from the Early Devonian Hunsrück Slate fauna

description: The relationships among arthropods (e.g. scorpions, millipedes, shrimps, insects) have long been debated, but refinements in molecular phylogenetics and the inclusion of fossil data facilitated by X-ray computed tomography (XCT) have led to an emerging consensus. Nevertheless, there are still big knots in the arthropod tree of life, namely (i) the position of pycnogonids (‘sea spiders’) and relationships among Chelicerata (e.g. horseshoe crabs, scorpions, spiders, mites), and (ii) the origin of insects and relationships among Pancrustacea (e.g. branchiopods, malacostracans, remipedes). Here we propose to apply hierarchical phase-contrast XCT to Devonian (400-myr-old) fossils from Germany, whose level of preservation including soft-tissues is unique for that critical period of arthropod evolution. Anatomical features revealed by XCT (part. the recognition of ancestral morphologies and transitional forms) will provide new phylogenetic insights into the arthropod tree of life.
DOI: 10.15151/esrf-es-1669448297
title: Unravelling hydrophobic interactions allowing Cu-based nanoparticles to cross tomato leaf cuticle.

description: Foliar application of nanoparticles (NPs) on plants leaves has the potential to improve plant nutrition and protection. There are major gaps in our understanding of how hydrophobic interactions drive NPs foliar uptake, translocation, and transformation in plant leaves. Our preliminary data indicates that these hydrophobic interactions are a key driver to NPs association with plant cuticle. In this project we propose to study how hydrophobicity and cuticle composition influence NPs transfers and transformations on and in tomato leaves. To do this, we aim at studying the interactions between (i) tomato mutants (cuticle composition and thickness variation) and (ii) Cu-based NPs of various hydrophobicities. Cu-based NP distribution and chemical speciation changes on the surface and inside leaves will be studied. Unravelling the role of cuticle composition and thickness on hydrophobic nanoparticle uptake will be an important step towards developing safe and sustainable agrochemicals.
DOI: 10.15151/esrf-es-1668004697
title: Selenate reduction in environmental geomedia

description: Due to its long half-life and high activity, 79Se is an important radionuclide to monitor for a correct assessment of the safety of nuclear waste repositories. Selenate [Se(VI)], the most oxidized form of Se, is an anion with high mobility in the pore waters of the clayey formations that will host the French repository for high-activity and long-life nuclear waste. It is known that magnetite, a Fe(II)-bearing phase present as a result of the corrosion of the steel canisters, can reduce selenate to elemental Se, a non-mobile solid species. Here, we aim at studying how carbonate –an ion present in the pore waters of the repository- and Fe(II) –an ion present due to the corrosion of the steel canisters- can affect the reduction kinetics of selenate by interactions at the magnetite-water interface. The presence of these ions could pose kinetic barriers for the reduction. Assessing this risk is essential for reliable assessments of the safety of an underground repository.
DOI: 10.15151/esrf-es-1668005723
title: Redox reactivity of iron nano-minerals for natural production of radical species

description: ￼Heterogeneous Fenton-like reactions using airborne O2 as sole oxidant are gaining a fast-growing interest to eliminate organic contaminant in soils and groundwaters. At BM23 beamline, we will quantify the redox states of iron using Fe K-edge XANES spectroscopy in reactive Fe(II)-nanominerals previously subjected to reduction/oxidation experiments mimicking redox fluctuations at natural redox boundaries (water-table in soils and floodplains). We will also determine the evolution of the local structure around iron after redox cycling steps, using Fe K-edge EXAFS spectroscopy. Redox and structural information gained on the reactive Fe mineral substrates will be directly compared with the amount of radical species measured by EPR-spin trapping (see Figure) and to degradation rates of priority pollutants (HAP, pesticides) measured by ECOSYS/INRAE in similar redox cycling experiments. This study is supported by ANR project DEPOLECO (2022–2025) and is a main part of two PhDs.
DOI: 10.15151/esrf-es-1668006657
title: Direct Imaging of All-In-All-Out magnetic domains in the pyrochlore iridate compound Ho2Ir2O7

description: We propose to image antiferromagnetic domains in pyrochlore iridates (RE2Ir2O7, RE = Rare Earth) by scanning X-ray diffraction microscopy, using resonant X-ray scattering as magnetic contrast. At low temperature, both the Ir4+ and RE3+ sublattices host so-called “All-In-All-Out” magnetic orders with antiphase domains. These antiphase domains have been evidenced by various techniques, but their coincidence on both sublattices remains to be studied. Only X-rays, using absorption edges of both sublattices, are able to provide distinct pictures of the domain structures in both sublattices. This missing information is crucial to understand how such domains can be manipulated. Indeed, it has been suggested that magnetic monopoles in the RE sublattice could be used to manipulate the domains of the Ir4+ sublattice. If this first experiment is successful, it could lead to further studies under magnetic field, possibly with the full-field diffraction microscope of the beamline.
DOI: 10.15151/esrf-es-1668008308
title: Investigation of the role of strontium in the morphogenesis of anisotropic biogenic crystals

description: We will study Ca/Sr heterogeneities in coccoliths to understand their role in the formation of complex biogenic crystals. We aim to acquire high-resolution 3D X-ray fluorescence (3D-XRF) data from two types of coccoliths (holococcoliths and heterococcoliths) that represent two morphologies: expected calcite habit and asymmetrically grown crystals. We will use the acquired data to correlate Ca/Sr distribution with our previously obtained 3D nanoscale strain maps. We expect that the results of this proposal will allow us to elucidate the role of elemental heterogeneities in the biological control of strain and crystal morphogenesis.
DOI: 10.15151/esrf-es-1668025959
title: Kinetics of Pt oxidation and reduction in CO2 hydrogenation reaction

description: CO2 hydrogenation is an important reaction to convert green H2 to chemicals. We have recently developed at Pt loaded MoOx/Mo2N catalysts that achieved a catalytic activity of 2.43 × 10‒4 mol gcat‒1 s‒1 at 350 C, which is much higher than other reported catalysts. In situ XAFS at Pt L3 edge suggests a mixed Pt metallic and PtOx species under steady state, with the Pt-Pt coordination numbers (C.N.) around 2.0 and Pt-O around 2.5. In situ Raman spectroscopy shows abundant surface oxygen vacancies (VO), suggesting a M-K mechanism that involves in the oxidation of Pt by CO2 and reduction of Pt with H2. Here we apply for the Pt L3 edge QXAFS study with modulation excitation of CO2 and H2 pulses. This study will measure the rate of Pt oxidation and reduction at different temperatures, achieving kinetic data of the half reaction. Comparing the data with full reaction will determine the rate limiting step, providing methods to further improving the rate of the reaction at low temperatures.
DOI: 10.15151/esrf-es-1665508875
title: Study of a potential anisotropic dopant diffusion induced by annealing in HgCdTe

description: The ternary CdHgTe is the reference material for high-end applications like the next generation of state-of-the-art high-performance cooled infrared detectors for
astrophysical applications. Current development focuses on mastering extrinsic p-type doping. Antimony is a good candidate to obtain the desired p-type behaviour, with ionic implantation used to ensure the precise and localized incorporation of the doping element. A previous study of the evolution of implantation-induced
damages after annealing treatment revealed an anisotropic diffraction intensity loss in the depth of the material with a range matching typical diffusion length. The
goal of this proposal is to understand all underlying physical mechanisms and driving forces that lead to this unexpected anisotropic phenomenon. And to assess its
eventual correlation to an anisotropic dopant diffusion, a phenomenon that could lead to massive applicative interests.
DOI: 10.15151/esrf-es-1665508958
title: High Resolution 3D Strain and Orientation Mapping within a Single Grain on Various Forms (Additive Manufacturing vs Wrought vs Welded) of 31

description: The current programme aims to improve the lifespan and operational efficiency of energy generation plants by studying the degradation mechanisms of 316 austenitic stainless steel, a common material used for structural components. The overall project uses a multi-scale experimental approach that merges computational modelling with state-of-the-art experimental techniques to create an unprecedented comprehensive characterisation of structural materials behaviour. Dark Field X-ray Microscopy (DFXM) experiments, correlated to on-going HR-EBSD and DIC work, will enable 3D mapping at nanoscale to improve our models by obtaining strain distribution within a grain of interest. The results will help understand the effect of localised strain fields on crack growth rate in demanding environments.