cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15151/esrf-es-1096389007
title: Continuation of ch6388

description: continuation of user experiment as inhouse time
DOI: 10.15151/esrf-es-1098376467
title: In situ monitoring of Sn microstructure during compression by Laue microdiffraction

description: Sn whiskers grown on polycrystalline Sn will be monitored by Laue microdiffraction. Pre compressed and in situ compressed Sn microstructures will be measured every 8 hours. e expect to determine the evolution of strain level around whisker as a function of time and distance from whiskers root.
DOI: 10.15151/esrf-es-1040723610
title: Dynamics of tubulin nucleation and assembly

description: Tubulin nucleation and microtubule (MT) assembly are frequent events in cells. To understand the fundamental mechanisms of MT assembly it is critical to resolve the early stages of the reaction, dictating the assembly pathway. Despite years of research, tubulin nucleation is still one of the least understood steps of MT dynamics, owing to the size of tubulin and its highly dynamic character. To determine the fundamental molecular-level mechanisms directing tubulin nucleation and the early assembly states, we will reconstitute in vitro a minimal model system that mimics the key elements of cytoskeleton MT assembly. We will use time-resolved solution small angle-X-ray scattering (TR-SAXS) and our advanced analysis tools to follow in real-time, the active self-organization, dynamic structures, and bioenergetics of tubulin proteins and their regulation by fluxes of chemical energy, associated with nucleotide hydrolysis reactions.
DOI: 10.15151/esrf-es-1040727135
title: The chemistry of Nannoconus: a key to understand the success story of this biocarbonate producer in Cretaceous oceans

description: Nannoconus are a group of calcareous nannofossils (um size) produced by marine planktonic organisms that were important calcifiers during the Cretaceous. They represent an important group due to their successful development and the high calcification rate, which contributed to buffer the acidification of the oceans in the Early Cretaceous. Despite their abundance for a long time, nothing is known about both the mode of calcification and the chemical composition of Nannoconus exoskeleton. These informations are needed to explain their success as marine calcifiers in changing lower Cretaceous climate and oceans, and to decipher the paleochemistry of the oceans. In particular, determining metal (Sr, Mg) contents in their calcite plates can help solving these questions. Here, we propose to reconstruct the chemical composition of three families of nannofossils abundant in the Early Cretaceous by using X-ray micro-fluorescence spectroscopy (µ-XRF) with synchrotron radiation at ESRF (ID21).
DOI: 10.15151/esrf-es-1040729042
title: Identification of Nitrogen doping sites by Valence to Core X-ray Emission Spectroscopy of Niobium and Titanium in (Nb,N) co-doped TiO2 p

description: In the field of photocatalysis, balanced co-doping of TiO2 with transition metal cations and nitrogen emerged as a promising approach to modify the optoelectronic properties of TiO2 in order to reduce its bandgap while limiting the density of defects. Our work on (Nb,N) codoped materials confirmed the improved photocatalytic activity depending on the synthesis conditions. The presence of Nb5+ in substitution of Ti4+ in the anatase TiO2 lattice was confirmed by XPS and XRD. But for the N doping atoms, while they seem to play a key role in the structure/efficiency relationship, the nature of doping sites remains largely unknown. This is due to the lack of characterization methods allowing to distinguish N from O in this type of structure. Valence to Core (VTC) X-ray Emission Spectroscopy (XES) at Nb and Ti K edge could then be a useful method to probe the coordination sphere of these cations and identify the presence of nitrogen in their environment.
DOI: 10.15151/esrf-es-1041355085
title: Substrate effects on the magnetic properties of an epitaxial CrI2 monolayer

description: Thanks to the progress in 2D materials technology, van der Waals (vdW) materials with outstanding magnetic properties can be synthesised nowadays by epitaxial methods down to the mono/few layers. However, substrate choice might lead to unwanted issues compromising the achievement of the desired properties. On the other hand, substrate engineering represents an ideal playground for understanding low-dimensional magnetism. Our preliminary XAS/XMCD studies on the epitaxial Chromium diiodide, CrI2, monolayers (ML) grown by MBE on a metallic (gold) and an insulating (mica) substrate suggest respectively paramagnetic and ferromagnetic ground states at 4K, sometimes in contrast with early theoretical results. These dissimilar behaviours might be explained in terms of charge doping from the metallic substrate and/or lattice distortion affecting Cr local symmetry and the material ground state.
DOI: 10.15151/esrf-es-1043609936
title: Diagenesis and burial of hydrothermal iron in the deep sea

description: Iron (Fe) is an essential micronutrient for marine phytoplankton that take up CO2 during photosynthesis. Therefore, Fe bioavailability and the pathways of supply to and removal from the ocean are of great scientific interest. Iron supply by hydrothermal vents is a potentially important but poorly constrained source of Fe to the deep sea. In order to understand the role of hydrothermal vents in the global marine iron (Fe) cycle, we need to determine the mechanisms of Fe precipitation, settling and burial around hydrothermal vents. We will apply Fe K-edge EXAFS to nanoscale Fe-rich aggregates in the water column and sedimentary Fe around a mid-Atlantic hydrothermal vent field ('Rainbow') and thus track the precipitation and diagenesis of hydrothermal Fe. XAS results from this unique dataset will provide, for the first time, insight into the long-term fate of hydrothermal nanoparticulate Fe aggregates beyond what have so far obtained from microscopic and chemical analyses.
DOI: 10.15151/esrf-es-1060911964
title: Humidity modulated microfocus small- and wide-angle X-ray scattering on man-made cellulose fibers

description: Man-made cellulose fibre is drawing increasing attention from the industry due to its sustainability and high performance. There are two main types of regenerated cellulose fibres, wet–spun (Viscose) and dry–wet–spun (Ioncell). Ioncell exhibits better mechanical properties in dry and wet conditions than Viscose. The cellulose crystal structure within fibre significantly impacts its mechanical properties. Thus, it is essential to understand the ultrastructures of different regenerated cellulose fibres. We propose using scanning X–ray microdiffraction to study three cellulose fibres, Viscose, Ioncell, and High Toughness Ioncell under different humidity conditions. This experiment will allow us to obtain a complete field of view of fibre structure from molecular to meso to micron scale and the mechanical effects under different humidity conditions. The results will provide invaluable information for generating high-performance Man-made cellulose fibres.
DOI: 10.15151/esrf-es-1040436607
title: Tracking the interplay between strain and the antiferromagnetic domain structure through the metal-insulator phase transition in NaOsO3 usin

description: This experiment aims to determine the mechanism triggering the concomitant metal-insulator and antiferromagnet (AF)-paramagnet phase transition taking place in NaOsO3 via three-dimensional (3D) imaging. We will perform Bragg Coherent Diffraction Imaging (BCDI) measurements on both the structural and magnetic peaks to monitor the evolution of both strain and magnetic domains as a function of temperature through the phase transition. By combining BCDI with the dependence of resonant magnetic scattering on the polarization of the incident X-rays, we aim to reconstruct the AF domain structure through the bulk of the sample for the first time. By performing these measurements as a function of temperature through the phase transition, we hope to clarify the role played by magnetostriction in the metal-insulator transition, providing valuable insight into the nature of the phase transition currently under debate.
DOI: 10.15151/esrf-es-1049552426
title: A synchrotron-based multidisciplinary approach to investigate the origin and early evolution of fossoriality

description: The early Permian Bromacker locality is central for studying the origin and evolution of tetrapod fossoriality. This site not only holds body fossils of plants, invertebrates and diverse tetrapods, but also a wealth of associated trace fossils, offering unprecedented insights into the ecology and behaviors of animals that died about 290 Ma. Of particular interest are among the oldest tetrapod burrows and associated scratch marks yet discovered. However, the identity of the burrow-makers remains uncertain. Similarly, the life history traits of Bromacker tetrapods have yet to be documented. The current project thus aims at better understanding the physiology of these species by means of virtual bone palaeohistology. In order to pinpoint the architects of these burrow structures, we will also investigate, using Synchrotron X-ray radiation imaging data, the morphological, biomechanical and microanatomical features that could be associated to a degree of fossoriality in these animals.
DOI: 10.15151/esrf-es-1057010072
title: New insights into the growth of the Neanderthal lineage

description: The last decade has seen an intense scientific debate on Neanderthal lineage growth pattern. The pioneering use of synchrotron imaging on fossils teeth allowed for the first time to record neanderthal dental growth in a non-destructive way. However, relatively few samples have been analyzed and variability in the growth pattern and associated evolutionary mechanisms are still largely unknown. To answer these questions, we collected a large sample of unpublished and invaluable fossil teeth of the Neanderthal lineage in Europe. We have also selected modern human deciduous teeth with the specific focus of investigating their family relationships based on the heritability of dental growth biorhythms which are under strong genetic control. ID19 is the only hard X-ray beamline in Europe enabling to image dental hard tissues microstructure for paleoanthropology with high coherence, low dose, high energy photons, a large field-of-view, and using phase contrast µCT.
DOI: 10.15151/esrf-es-1096005043
title: Multimodal characterization (DCT, 3DXRD, TT, PCT) of structural materials

description: * repeat Topotomo on AlLi sample * test alternative TT acquisition strategy * in-situ deformation of In718 alloy
DOI: 10.15151/esrf-es-1018442176
title: Multi-scale Multi-techniques investigations of Li-ion batteries: towards a European Battery Hub

description: In this science-driven Long-Term proposal, we propose a 3-years multi-beamline program tackling grand challenges for actual, emerging and future battery technologies. We will deploy advanced methodologies for accelerating research by setting new cooperation modes for multi-techniques multi-scale studies. Three chemistry-neutral scientific cases have been identified to fulfil this LTP: bulk-to-surface mechanisms, high energy system and smart sensing. Multiple, time-coordinated, interoperable spectroscopic, imaging & scattering techniques will be implemented. This proposal is the Pilot Phase towards a European Battery Hub aiming at accelerating workflows in battery research by optimizing the exceptional diversity of means available at ESRF. We expect to demonstrate the added value of a new “proposal” mechanism, e.g. science-driven beamtime allocation group, serving the fast growing, highly competitive and rapidly evolving European battery community.
DOI: 10.15151/esrf-es-1038847889
title: Controlled thin film growth through machine-learning based closed-loop feedback with online X-ray scattering analysis

description: In recent years, X-ray scattering has received a significant boost due to the increased use of machine learning strategies in the analysis of data acquired at synchrotron sources. With this proposal we intend to leverage ML based real-time data analysis integrated into modern beamline environments and thereby provide low-barrier access to ML based techniques for many user groups visiting photon sources. As a proof-of-concept, we aim at growing organic molecular thin films of two distinct molecular components, monitor the growth with X-ray reflectivity and establish a closed loop between real-time, ML-based online data analysis and the sample environment to tailor the deposition process of organic thin films on molecular monolayer level. We propose to grow multilayers of the two organic molecules PTCDI-C8 (N,N′-dioctyl-3,4,9,10-perylene tetracarboxylic diimide) and the N-alkane (TTC, C44H90) which are known for their high degree of structural order and layer-by-layer growth modes.
DOI: 10.15151/esrf-es-1038848186
title: Combining XPCT and immunohistochemistry-type approach for identifying disease relevant cells in 3D brain environment:nanoXRF imaging for the

description: X-ray phase contrast tomography (XPCT) allows 3D visualization of disease-relevant vascular and neuronal networks within central nervous system tissue, but the technique has limitations in the univocal identification of disease-relevant cells. We intend to boost XPCT to a higher level equipping it with nanotechnology solutions by combining two nanocomponents, metal nanoparticles (NPs) and cell marker-specific nanobodies (single-chain antibodies) so providing detailed image of the whole organ, with imaging at the cellular level, identifying the relevant cells via an immunohistochemistry-type approach. We propose to perform Holo-tomography and Xray Fluorescence experiment to validate this new imaging approach. The data will be correlated with planned and performed above and below K-edge measurements.
DOI: 10.15151/esrf-es-1053989768
title: Study of the macromolecular dynamics as a function of stretching in bio-based polymers

description: The objective of this study is consequently to measure in situ the evolution of the macromolecular dynamics as a function of both stretching conditions and strain. To achieve this goal X-ray Photon Correlation Spectroscopy (XPCS) measurements will be carried out as this technique is one of the few allowing such in situ measurements of relaxation times from milliseconds to tens of seconds, i.e. in the timescale of the polymer macromolecular dynamics. Another objective of this work is to develop the XCPS measurement technique on the D2AM beamline (now possible due to the enhancement of the beam coherence thanks to the EBS upgrade).
DOI: 10.34740/kaggle/dsv/5113627
title: Elon Musk Tweets
DOI: 10.6084/m9.figshare.22219093
title: Ruminant.phage

description: The Unified Ruminant Phage Catalogue (URPC) consisting of 64,922 non-redundant phage genomes, assembled using 2,333 metagenomic samples from ten gastrointestinal sites of eight ruminant species.
DOI: 10.6084/m9.figshare.22219093.v1
title: Ruminant.phage.zip

description: The Unified Ruminant Phage Catalogue (URPC) consisting of 64,922 non-redundant phage genomes, assembled using 2,333 metagenomic samples from ten gastrointestinal sites of eight ruminant species.
DOI: 10.6084/m9.figshare.22219135
title: Supplementary Material for: Three Dimensional Assessment of Radiographic Changes after Indirect Pulp Capping using Silver Diamine Fluoride with or without Potassium Iodide in Young Permanent Teeth (12-month RCT)

description: The aim was to have a three-dimensional evaluation of radiographic changes after indirect pulp capping (IPC) with silver diamine fluoride (SDF) with or without potassium iodide (KI) and resin modified glass ionomer cement (RMGIC) in deep carious young permanent molars using cone beam computed tomography (CBCT). 108 first permanent molars with deep occlusal cavitated caries lesions, in forty-nine 6–9-year-old children, were randomly allocated to one of 3 groups (n=36) and treated with SDF+KI, SDF and RMGIC as IPC materials. CBCT scans were taken at 0 and at 12-months to assess tertiary dentin formation (volume and grey level intensity), increase in root length, and pathological changes as secondary caries, periapical radiolucency, internal resorption and obliteration of the pulp. The three-dimensional image analysis procedures were performed using ITK-SNAP and 3D Slicer CMF. Comparisons were made using analysis of variance with a fixed effect for treatment and random effects for patient, and patient-by-treatment to account for within-patient correlations. A two-sided 5% significance level was used. There were no significant differences among the three groups regarding tertiary dentin volume (p=0.712) and grey level intensity (p=0.660), increase in root length (p=0.365), prevention of secondary caries (p=0.63) and periapical radiolucency (p=0.80) in the analysed 69 CBCT scans. The study did not find differences among the groups regarding quality and quantity of tertiary dentin formed, increase in root length, absence of secondary caries and other signs of failure as shown by CBCT. Clinical Significance: The results show no significant differences in radiographic outcomes (quality and quantity of tertiary dentin formed, increase in root length, absence of secondary caries and other signs of failure) when using SDF+KI, SDF and RMGIC in IPC. The results of this study can help guide treatment decision making regarding use of SDF and SDF+KI as IPC materials in deep cavitated lesions.
DOI: 10.6084/m9.figshare.22219135.v1
title: Supplementary Material for: Three Dimensional Assessment of Radiographic Changes after Indirect Pulp Capping using Silver Diamine Fluoride with or without Potassium Iodide in Young Permanent Teeth (12-month RCT)

description: The aim was to have a three-dimensional evaluation of radiographic changes after indirect pulp capping (IPC) with silver diamine fluoride (SDF) with or without potassium iodide (KI) and resin modified glass ionomer cement (RMGIC) in deep carious young permanent molars using cone beam computed tomography (CBCT). 108 first permanent molars with deep occlusal cavitated caries lesions, in forty-nine 6–9-year-old children, were randomly allocated to one of 3 groups (n=36) and treated with SDF+KI, SDF and RMGIC as IPC materials. CBCT scans were taken at 0 and at 12-months to assess tertiary dentin formation (volume and grey level intensity), increase in root length, and pathological changes as secondary caries, periapical radiolucency, internal resorption and obliteration of the pulp. The three-dimensional image analysis procedures were performed using ITK-SNAP and 3D Slicer CMF. Comparisons were made using analysis of variance with a fixed effect for treatment and random effects for patient, and patient-by-treatment to account for within-patient correlations. A two-sided 5% significance level was used. There were no significant differences among the three groups regarding tertiary dentin volume (p=0.712) and grey level intensity (p=0.660), increase in root length (p=0.365), prevention of secondary caries (p=0.63) and periapical radiolucency (p=0.80) in the analysed 69 CBCT scans. The study did not find differences among the groups regarding quality and quantity of tertiary dentin formed, increase in root length, absence of secondary caries and other signs of failure as shown by CBCT. Clinical Significance: The results show no significant differences in radiographic outcomes (quality and quantity of tertiary dentin formed, increase in root length, absence of secondary caries and other signs of failure) when using SDF+KI, SDF and RMGIC in IPC. The results of this study can help guide treatment decision making regarding use of SDF and SDF+KI as IPC materials in deep cavitated lesions.
DOI: 10.6084/m9.figshare.22219141
title: Supplementary Material for: Three Dimensional Assessment of Radiographic Changes after Indirect Pulp Capping using Silver Diamine Fluoride with or without Potassium Iodide in Young Permanent Teeth (12-month RCT)

description: The aim was to have a three-dimensional evaluation of radiographic changes after indirect pulp capping (IPC) with silver diamine fluoride (SDF) with or without potassium iodide (KI) and resin modified glass ionomer cement (RMGIC) in deep carious young permanent molars using cone beam computed tomography (CBCT). 108 first permanent molars with deep occlusal cavitated caries lesions, in forty-nine 6–9-year-old children, were randomly allocated to one of 3 groups (n=36) and treated with SDF+KI, SDF and RMGIC as IPC materials. CBCT scans were taken at 0 and at 12-months to assess tertiary dentin formation (volume and grey level intensity), increase in root length, and pathological changes as secondary caries, periapical radiolucency, internal resorption and obliteration of the pulp. The three-dimensional image analysis procedures were performed using ITK-SNAP and 3D Slicer CMF. Comparisons were made using analysis of variance with a fixed effect for treatment and random effects for patient, and patient-by-treatment to account for within-patient correlations. A two-sided 5% significance level was used. There were no significant differences among the three groups regarding tertiary dentin volume (p=0.712) and grey level intensity (p=0.660), increase in root length (p=0.365), prevention of secondary caries (p=0.63) and periapical radiolucency (p=0.80) in the analysed 69 CBCT scans. The study did not find differences among the groups regarding quality and quantity of tertiary dentin formed, increase in root length, absence of secondary caries and other signs of failure as shown by CBCT. Clinical Significance: The results show no significant differences in radiographic outcomes (quality and quantity of tertiary dentin formed, increase in root length, absence of secondary caries and other signs of failure) when using SDF+KI, SDF and RMGIC in IPC. The results of this study can help guide treatment decision making regarding use of SDF and SDF+KI as IPC materials in deep cavitated lesions.