cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15151/esrf-es-1550905332
title: RIXS/HERFD Study of Covalency in Pr4+ metal-ligand bonds as a function of symmetry and donor type

description: The electronic structure of lanthanide materials inherits on-site correlations and unquenched orbital degrees of freedom from atomic f-electron states. In the most stable trivalent oxidation state (Ln3+), the core-like 4f orbitals are usually only weakly perturbed by the crystal field (CF) yielding anisotropic magnetic moments. Although covalent metal-ligand interactions involving the 4f shell are generally weak in Ln3+ systems, this paradigm breaks down for Ln4+ ions as 4f orbitals hybridize with the valence orbitals of the ligands analogous to transition metals. The unusual nature of Ln4+ ions have significant effects on the electronic structure of bulk materials as evidenced in PrBa2Cu3O7 where in superconductivity is suppressed and has been attributed to 4f-2p hybridization in the Pr-O bond. Therefore, to understand the electronic structure of tetravalent lanthanides, we propose to use soft x-ray RIXS and HERFD at L3 edges to probe covalency in Pr-O bond.
DOI: 10.15151/esrf-es-1550905471
title: Increasing catalytic activity of the Solid Oxide Electrolysers for electrosplitting of CO2/H2O by addition of affordable and eco-friendly ca

description: Recently, Solid Oxide Electrolysis Cells (SOECs) can be considered a solution for the elimination of atmospheric CO2 and limiting its negative environmental impact. In this study a series of novel alterations were introduced into the structure of conventional SOEC based on standard Ni-YSZ steam electrode. Single cells were enriched with transition metals (Cu, Mn, Co, Fe, Zn) as well as non-toxic and affordable alkaline metal oxide promoters, namely K, Na, Rb, and Mg. A series of preliminary catalytic tests revealed great increase in the activity towards CO2 reduction while performing co-electrolysis of the CO2/H2O mixture despite of relatively small amount of the additives. This proposal involves XAFS (ESRF), that was selected to find the causes of the sudden catalytic enhancement. The technique will involve in-situ or quasi in-situ measurements of chemical surroundings of the transition metals and alkaline promoters under reactants atmosphere and elevated temperature.
DOI: 10.15151/esrf-es-1550905711
title: Design of nano-carbide heterogeneous catalysts as substitute for noble metals

description: The project wishes to develop catalysts based on Transition Metal Carbides (TMC) (mainly Mo or W) which are attractive alternatives to noble metals due to the coexistence of metallic and acidic/oxophilic functionalities from abundant and cost-effective available metals. One of the main difficulties with carbide catalysts is to control their activation (carburization) in order to precisely control the carbide/oxide balance needed for selective hydrogenation and hydrogenolysis. We propose the thorough characterization of the Tungsten catalysts supported on TiO2 and carbon using High-Energy Resolution Fluorescence detected XAS (HERFDXAS) at the W L3 edge during the carburization process for probing the full carbide speciation in severe conditions (high temperature, 700-800°C, and in Methane/hydrogen atmosphere). The High-Temperature in-situ cell available on FAME-UHD beamline will allow us to fully reproduce lab-scale experiments in a broad range of temperatures and atmospheres.
DOI: 10.15468/dl.8wqhsu
title: Occurrence Download

description: A dataset containing 2085 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Entelurus aequoreus (Linnaeus, 1758)"
 ]
}

 The dataset includes 2085 records from 113 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0012279-231120084113126/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-1550905720
title: In situ investigation of photo-induced hydrogen production by cobalt (III) radicals

description: In our experiment we want to elucidate the working principle of a set of Co-based cyclometallated complexes, which form under irradiation a radical enabling the production of hydrogen from chemicals with weak hydride bonds and even mild reducing sugars.
DOI: 10.15468/dl.3dtxbs
title: Occurrence Download

description: A dataset containing 21 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Adelophryne adiastola Hoogmoed & Lescure, 1984"
 ]
}

 The dataset includes 21 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0306301-210914110416597/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-1550907768
title: Understanding the drastic solvent resistance change in semi-crystalline polymer semiconductors upon thermal annealing

description: Thermal annealing is widely known to improve the performance of organic semiconductor devices due to effects such as defect healing, side-chain reorientation/ crystallization etc. However, its effect on thin film dissolution has not yet been investigated. In our study of several polymer semiconductors, we find that most materials exhibit a change in solvent after heating above a certain temperature. The location and width of the temperature window where this solvent resistance change occurs is different for different polymer semiconductors. With this experiment, we aim to investigate technologically relevant polymers in this material-specific temperature range and obtain important information on the changes in the crystalline phase. This data will complement other experimental data and help to draw a comprehensive picture of the changes in the semi-crystalline thin film morphology that leads to the drastic changes in the dissolution behavior upon thermal post-treatments.
DOI: 10.15468/dl.ac2b5x
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Thismia chrysops Ridl."
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013279-230810091245214/datasets/export for details.
DOI: 10.15151/esrf-es-1550907915
title: Establishing the Role of Hydrogen in Metal Plasticity

description: Hydrogen (H) is essential to decarbonize industry, but its use today is limited because it embrittles the metals and alloys required to store/distribute it. Despite 150 years of research, the fundamental mechanisms of H-embrittlement are still poorly understood. H atoms form a solid solution of interstitials in structural metals that affect the behavior of dislocations. While dislocations are essential to understand plasticity and deformations, it is still unclear whether H enhances or reduces their mobility. This matter is hotly debated, as no technique can measure dislocations and their motion deep inside bulk crystals during stress. We developed time-resolved and 3D dark-field X-ray microscopy (DFXM) and use it to study the interactions of deep subsurface dislocations. We now seek to use DFXM to directly measure how H alters the structure and interactions forces between dislocations, offering the first direct measurements to reconcile conflicting H-altered mobility models.
DOI: 10.15151/esrf-es-1550907943
title: Genetic Algorithm preditions validation by in-situ synchrotron X-ray diffraction

description: A genetic algorithm was developed to optimize High Entropy Alloys compositions. The focus was on achieving a single-phase face-centered cubic (FCC) structure and maximizing the Hall-Petch constant and Critical Resolved Shear Stress for grain refinement and solid solution effects. The range of compositions was chosen to induce Transformation-Induced Plasticity (TRIP) and Twinning-Induced Plasticity (TWIP) mechanisms. Synchrotron data from the ESRF ID11 beamline is crucial for validating the genetic algorithm's predictions. This beamline enables high-energy diffraction studies that could confirm the alloy single-phase FCC structure. It also enables pair distribution function (PDF) analysis to assess solid solution quality based on peak width. Additionally, ESRF ID11 can be equipped with ADMET mini load frame and Cryostream for in-situ synchrotron X-ray diffraction (SXRD) at 90K to 300K, essential for studying TRIP/TWIP effects at various strain rates in room and cryogenic temperatures.
DOI: 10.15151/esrf-es-1550908247
title: Molecular bases of regulation of cardiac muscle contractility

description: Regulation of heart contractility is operated by both thin, actin containing filaments, and thick, myosin containing filaments. Ca2+-induced structural changes in the regulatory proteins of the thin filament release the actin sites for interaction with myosin motors. Thick filament mechanosensing adapts to the load the number of motors recruited from the OFF state in which they lie tilted back on their tails unable to interact with actin. In the heartbeat both thin and thick filament activations are under the control of modulatory mechanisms by accessory proteins. Mutations in these proteins cause dysregulation and cardiomyopathy. We use sarcomere-level mechanics and X-ray diffraction on intact and demembranated myocytes of the ventricle of wild type, mutant and transgenic animal models to investigate the mechanisms that control thick filament regulation/dysregulation and test small molecules candidate as therapeutic tools.
DOI: 10.15151/esrf-es-1550909033
title: Single-cristal X-ray diffraction study of the Pressure - Temperature phase diagram of the structure of nickel ferrite

description: The Nickel ferrite, which is known to belong to the inverse spinel family (cubic F-3m space group) exhibits ferromagnetism below 870 K. Recently it has been reported that this system also exhibits ferroelectricity below 98K, concomitant to a structural distortion from Fd\bar{3}m to the P4122 space group. While our attempt to confirm this structural distortion at low temperature failed so far, our recent X-ray absorption spectroscopy measurements under pressure and at room temperature surprisingly revealed the presence of a wide transition occurring between 30 and 55 GPa, which nature remain puzzling. This proposal aims at characterizing, in detail, the crystallographic structure of the spinel NiFe2O4 at low and room temperature, ambient pressure and above 55 GPa to have a complete overview of the (Pressure - Temperature) structural phase diagram of this system.
DOI: 10.15468/dl.5k4mm5
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Microhyla fusca Andersson, 1942"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0306338-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.895f4c
title: Occurrence Download

description: A dataset containing 11 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Thismia clavarioides K.R.Thiele"
 ]
}

 The dataset includes 11 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013284-230810091245214/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-1550909093
title: X-ray magnetic circular dichroism in altermagnetic RuO2 thin films

description: We propose to employ element-specific x-ray magnetic dichroism to investigate the local spin configuration in thin films of RuO2, a prime member of a new class of compensated magnets: altermagnets. While the existence of linear dichroism in compensated magnets is well established, we aim to experimentally demonstrate that, apart from the ferromagnetic or non-collinear order, circular dichroism can also originate from the collinear altermagnetic order resulting in a spin split band structure. The proposed experiment will exploit the unique capabilities of beamline ID12, offering large magnetic fields required to manipulate compensated magnetic materials, and full X-ray polarization control.
DOI: 10.15468/dl.66fnn5
title: Occurrence Download

description: A dataset containing 5 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Magnolia decidua (Q.Y.Zheng) V.S.Kumar"
 ]
}

 The dataset includes 5 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013953-240425142415019/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-1550909536
title: Ca-modified Fe oxides for CO2-mediated propane dehydrogenation: probing the restructuring around the active sites by in-situ XRS, XES & XRD

description: In view of on-purpose propylene production, novel catalysts for CO2-mediated propane dehydrogenation (CO2-PDH) were developed in the form of hydrotalcite-derived mixed oxides, containing Fe, Mg and Al. In addition, incorporation of Ca was found to improve the materials’ redox properties, which positively affects the CO2-PDH activity. To further design these non-noble and earth-abundant catalysts, structure-activity-selectivity relations need to be developed. A detailed understanding is required of how the different elements in the catalyst interact under mixed oxidizing and reducing conditions - representative for CO2-PDH - and how this affects the sites selective to CO2-PDH. To this end, a combined study of X-ray Raman Spectroscopy (XRS), Emission Spectroscopy (XES) and Diffraction (XRD) for in-situ characterization of the MgFe(Ca)AlO catalysts is proposed.
DOI: 10.15151/esrf-es-1550913042
title: Synthesis of Ternary M-C-N Nitrides of Alkaline Earth Metals

description: The aim of this project is the synthesis and investigation of a novel nitridocarbonates of alkaline earth metals. In particular, we aim to synthesis dimers, oligomers or polymerized networks of the complex anions guanidinate [CN3]5- and ortho-nitridocarbonate [CN4]8-. The justification for high pressure experiments with carbonitrides relies in the recently found SbCN3, which proofs that pressures above ~30 GPa lead to complex C-N anions with higher dimensionality and open a new class of materials potential for optoelectronic applications [1].
DOI: 10.15468/dl.kej5s6
title: Occurrence Download

description: A dataset containing 290 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Acer laurinum Hassk.)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 290 records from 25 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013952-240425142415019/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-1550913341
title: Effect of temperature and phase transition on intrinsic seismic wave attenuation derived from cyclic loading of neighborite (NaMgF3)

description: To evaluate whether the observed seismic attenuation in the lower mantle is due to small-scale lamination (extrinsic attenuation) or by intrinsic dissipation in bridgmanite and ferropericlase, we plan to conduct cyclic loading experiments on neighborite (NaMgF3) in conjunction with synchrotron radiation. NaMgF3 is a ferroelastic perovskite isostructural to bridgmanite, both belong to the sub-space-group Pbnm of the cubic perovskite structure and exhibit extensive twinning. When the direction of the stress is reversed, the perovskites will de-twin or form new twin domains. Thus, a cycling stress field causes twin domain switching and produces stress-strain hysteresis loops whose enclosed area is a measure of dissipated elastic energy. With increasing temperature, the Pbnm lattice distortion decreases, making it easier for twin domains to switch. A similar process may influence intrinsic attenuation of seismic waves travelling through bridgmanite.
DOI: 10.15468/dl.74rcj4
title: Occurrence Download

description: A dataset containing 2672 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Ditrichum zonatum (Brid.) Kindb., Dolichopoda geniculata (Costa, 1860), Dolichosoma lineare (Rossi))",
 "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 2672 records from 131 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0239474-210914110416597/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-1550914451
title: Multi-contrast tensor tomography on biological tissue

description: Biological structures are made of smaller building blocks whose specific arrangement defines their properties. Understanding the nano, micro and macrostructure is critical to understanding the tissue, however, imaging methods classically rely on isolating the tissue from its native environment to study its morphology. A different approach is using dark-field imaging and a multi-contrast strategy to study the contribution of the different components to the signal. We propose to use a high-energy small- and wide-angle X-ray scattering tensor tomography on a mouse limb. In this experiment, the direction of alignment and degree of orientation of the collagen fibrils and mineral platelets in the bone, collagen in tendons and ligaments, and keratin in nails and fur can be extracted in the 3D volume from their scattering/diffraction signal. We believe the experiment will pave the way for understanding tissue organization in a more complete and multi length scale manner.
DOI: 10.15468/dl.eja85n
title: Occurrence Download

description: A dataset containing 37 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Telipogon venustus Schltr."
 ]
}

 The dataset includes 37 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010573-230810091245214/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-1550915263
title: Investigation on the Dynamic Oxidation States of Fe in Novel Sustainable Cathodes: LiNi0.8Fe0.1Mn0.1O2 for Lithium Ion Battery

description: A newly developed and more environmentally friendly cathode material (LiNi0.8Fe0.1Mn0.1O2, NFM811) has been successfully synthesized. The proposed experiment is dedicated to elucidating the dynamic alterations in the oxidation state of the Fe element during the cycling process, utilizing synchrotron Mössbauer Spectroscopy. We aspire to deepen our understanding of the charge compensation mechanism within this material.
DOI: 10.15151/esrf-es-1550921429
title: Observation of a new degradation mechanism involving electrocatalyst nanoparticle growth in hydrogen PEM fuel cells associated to reduction

description: We aim to elucidate the relationship between oxidation state and stability of electrocatalyst for automotive proton exchange membrane fuel cells (PEMFCs) by operando and in situ characterization. The structural evolution of Pt nanoparticles will be tracked in a representative device under accelerated protocols able to capture the effect of low potential excursions, which occur in the application during the stops and were recently recognized as critical for Pt nanoparticles growth and dissolution. The mechanisms (oxidation/reduction, morphological reconstruction, dissolution) rising under the cathodic scan to low potential (&lt;0.4 V) will be elucidated by W/SAXS techniques. The study of different catalyst coated membranes and operating PEMFC conditions can clarify the electrochemical drivers that lead the degradation in this process. The work helps to improve aging mitigation strategies and Pt degradation model, and define PEMFC operational boundaries in dependence on material properties.
DOI: 10.15468/dl.9gdhs7
title: Occurrence Download

description: A dataset containing 393 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Eleutherodactylus eneidae Rivero, 1959"
 ]
}

 The dataset includes 393 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0296530-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.11083461
title: SPSS Responses of German Energy Commons to Questionnaire
DOI: 10.5281/zenodo.11083462
title: SPSS Responses of German Energy Commons to Questionnaire
DOI: 10.15151/esrf-es-1550922209
title: Resolving the momentum dependence of the spin waves in the kagome ferromagnet Fe3Sn2

description: The kagome lattice geometry can give rise to dispersionless spin or electron manifold states, which can develop emergent quantum phases such as the fractional quantum Hall state or unconventional superconductivity. In the metallic kagome ferromagnet Fe3Sn2, we observed a flat spin wave band showing unconventional amplitude in the long wavelength limit. While the energy of the flat band and the dispersion of the acoustic mode follows a simple nearest-neighbor Heisenberg model, another dispersive optic mode, which is also predicted in the model, is not resolved due to the limitation of the resolution. This mode and its amplitude is very important for the comprehensive understanding of the unconventional behavior of the spin waves. Thus, we propose to study the momentum dependence of the spin waves in Fe3Sn2 with high-resolution RIXS. The results will determine the spin Hamiltonian of this material and develop our understanding of the exotic spin and electron states in kagome magnets.
DOI: 10.15151/esrf-es-1550923205
title: In-Situ X-ray Absorption Spectroscopy of Ti-Modified NaNiO2 Cathodes for Sodium-Ion Batteries

description: Sodium-ion batteries are attracting much attention for electrochemical energy-storage applications due to the higher abundance and lower cost of sodium
compared with lithium. Layered transition-metal oxides, in particular NaNiO2 (NNO), hold promise as high-capacity cathode active materials. However, they
typically suffer from capacity degradation during battery operation. To address this issue, NaNi0.9Ti0.1O2 (NNTO) has been successfully synthesized and found to exhibit significantly improved cycling performance and stability over NNO. This is due in part to benefits of having two active redox couples, namely Ni2+/Ni3+ and Ni3+/Ni4+, in NNTO. To correlate the redox chemistry with the electrochemical behavior and to gain insights into the electronic and local structural environments of nickel and titanium, we plan to perform in-situ XAS measurements at the Ni and Ti K-edges.