cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.3535/6gk-45g-xd1
title: Pilea elegans Gay

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/93m-1e1-aew
title: Chloraea Lindl.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220694-1
title: Novel ground state in a triangular lattice antiferromagnet MnSnB2O6
DOI: 10.5286/isis.e.rb2320187
title: Pumping lipids across the gram-negative envelope

description: The PqiABC complex has been implicated in phospholipid (PL) transport between the inner and outer membrane of gram-negative bacteria. This one complex spans the periplasm with components in both membranes, tethering them together. In a recent experiment, RB2220703, we proposed utilising this trans-envelope complex as a scaffold to create a planar double membrane architecture, providing a unique gram-negative envelope mimetic to probe envelope biology. Our Preliminary Neutron Reflectometry (NR) experiments confirmed its successful creation. Furthermore, we predicted PqiABC to be a proton motive force (PMF) driven PL pump based on structural homology. By altering the buffer pH, we were able to emulate the PMF leading to a time dependent drop in the Scattering Length Density of the bilayer attached to the solid support. Suggestive of influx of hydrogenous material into the membrane, consistent with PMF driven PL transport. We have known for 40 years that PLs are transported to the outer membrane via a PMF mediated process. However, to date, no process has been identified. Our results provide tentative clues that PqiABC may be responsible. In this proposal we want to probe the system further and understand phospholipid selectivity.
DOI: 10.5286/isis.e.rb2320187-1
title: Pumping lipids across the gram-negative envelope

description: The PqiABC complex has been implicated in phospholipid (PL) transport between the inner and outer membrane of gram-negative bacteria. This one complex spans the periplasm with components in both membranes, tethering them together. In a recent experiment, RB2220703, we proposed utilising this trans-envelope complex as a scaffold to create a planar double membrane architecture, providing a unique gram-negative envelope mimetic to probe envelope biology. Our Preliminary Neutron Reflectometry (NR) experiments confirmed its successful creation. Furthermore, we predicted PqiABC to be a proton motive force (PMF) driven PL pump based on structural homology. By altering the buffer pH, we were able to emulate the PMF leading to a time dependent drop in the Scattering Length Density of the bilayer attached to the solid support. Suggestive of influx of hydrogenous material into the membrane, consistent with PMF driven PL transport. We have known for 40 years that PLs are transported to the outer membrane via a PMF mediated process. However, to date, no process has been identified. Our results provide tentative clues that PqiABC may be responsible. In this proposal we want to probe the system further and understand phospholipid selectivity.
DOI: 10.3535/46y-n66-l4e
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220694
title: Novel ground state in a triangular lattice antiferromagnet MnSnB2O6
DOI: 10.5286/isis.e.rb2310334-1
title: CANADIAN: Shining a light on “NMR-invisible” biocidal borate glasses

description: Dissolvable copper-sodium-borate glass has found an industrial application as a wood preservative, where the biocidal copper and borate ions in solution slowly infiltrate and bind to wood’s chemical components, leading to an inhospitable environment for most microorganisms, tripling lifetimes of wood products (approx. ten years). The unique dissolution behaviour, which is paramount to the successful application of these glasses, is dependent on the copper-borate bonding in the glassy state: one cannot simply add the starting reagents to water and expect the same infiltration behaviour. The main goal is to understand the chemical bonding within the glass that results in the strong infiltration of the aqueous copper-borate complexes into the wood. Discernment of the different bonding environments in the glass is more reliable than in the solution state, and would aid future investigations of aqueous coordination complexes, likely by X-ray absorption. We will extract accurate information about the boron and copper bonding environments from neutron total scattering and x-ray total scattering, respectively (including dependence on independently measured oxidation state). In addition to fundamental understanding about copper in borates glass, we wish to quantitatively relate molecular structure to the macroscopic properties, such as dissolution behaviour, physical and mechanical properties.
DOI: 10.3535/d0f-kc3-ghc
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/p95-3b5-f7j
title: Senecio fistulosus Poepp. ex DC.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310334
title: CANADIAN: Shining a light on “NMR-invisible” biocidal borate glasses

description: Dissolvable copper-sodium-borate glass has found an industrial application as a wood preservative, where the biocidal copper and borate ions in solution slowly infiltrate and bind to wood’s chemical components, leading to an inhospitable environment for most microorganisms, tripling lifetimes of wood products (approx. ten years). The unique dissolution behaviour, which is paramount to the successful application of these glasses, is dependent on the copper-borate bonding in the glassy state: one cannot simply add the starting reagents to water and expect the same infiltration behaviour. The main goal is to understand the chemical bonding within the glass that results in the strong infiltration of the aqueous copper-borate complexes into the wood. Discernment of the different bonding environments in the glass is more reliable than in the solution state, and would aid future investigations of aqueous coordination complexes, likely by X-ray absorption. We will extract accurate information about the boron and copper bonding environments from neutron total scattering and x-ray total scattering, respectively (including dependence on independently measured oxidation state). In addition to fundamental understanding about copper in borates glass, we wish to quantitatively relate molecular structure to the macroscopic properties, such as dissolution behaviour, physical and mechanical properties.
DOI: 10.5286/isis.e.rb2320152-2
title: Enhancing the high-Tc spiral multiferroic phase by pressure in single-crystal YBaCuFeO5

description: YBaCuFeO5 (YBCFO) displays magnetism-driven ferroelectricity (FE) at unexpectedly high temperatures. The exceptional stability of the spiral magnetic order in YBCFO involves a non-conventional mechanism known as “spiral order by disorder”. Electrical polarization develops associated to the spiral (cycloidal) magnetic order, whose ordering temperature can be increased by more than 180 K (far beyond RT) by manipulating the Cu/Fe chemical disorder in powder samples (A. Romaguera et al., Phys. Rev. Research (2022)). However, single crystals present too much Cu/Fe order and lower spiral transition temperatures due to its fabrication method (floating-zone). Chemical pressure results in powders and the theoretical models (Science Adv. 4, eaau6386 (2018)) indicate that compressing the thickness (dt) of the bipyramidal a-b layer in YBaCuFeO5 has a strong influence on the strength of the frustrated magnetic interactions and the stabilization of the spiral phase. We will apply this strategy and will study the influence of pressure on the spiral magnetic order of an YBaCuFeO5 single crystal with Tspi=195 K (previously characterized by polarized&unpolarized neutrons). This is the highest spiral temperature reported so far in single crystals. Our SXRD and Raman characterization under pressure also suggest a possible enhancement of the thermal stability of the spiral phase.
DOI: 10.5286/isis.e.rb2320214
title: The structure of Li and Na Phosphate oxynitride glassy electrolytes

description: In this proposal we will evaluate the structure of Li and Na phosphate glasses where oxygen has been partly substituted by nitrogen. This work is developed form a rapid access proposal, undertaken and GEM and work completed at the SNS (NOMAD) and forms part of a large-scale project that is focussed on developing these materials as solid electrolytes. Nitrogen can be Incorporated into phosphate glasses when exposed to ammonia (ammonolysis) and after nitridation the glasses show enhanced properties including improved mechanical performance. Importantly from a glass structure perspective these glasses have “invert” structures with isolated coordination polyhedra and extensive intermediate range order in. In this proposal, we will study two base compositions, a metaphosphate (MPO3) and M4P2O7 (M=Li or Na) to compare and contrast the medium range ordering. Molecular dynamics simulations of these systems is show development of ordering at the intermediate length scale and development (in the simulations) of small angle features, not accessed in the study completed at GEM. Therefore we will evaluate the development of intermediate range ordering and small angle features using the full Q range available at NIMROD. We will study 12 samples and evaluate structures as a function of nitrogen and also as a function of the two alkali cations, lithium and sodium.
DOI: 10.5286/isis.e.rb2320214-1
title: The structure of Li and Na Phosphate oxynitride glassy electrolytes

description: In this proposal we will evaluate the structure of Li and Na phosphate glasses where oxygen has been partly substituted by nitrogen. This work is developed form a rapid access proposal, undertaken and GEM and work completed at the SNS (NOMAD) and forms part of a large-scale project that is focussed on developing these materials as solid electrolytes. Nitrogen can be Incorporated into phosphate glasses when exposed to ammonia (ammonolysis) and after nitridation the glasses show enhanced properties including improved mechanical performance. Importantly from a glass structure perspective these glasses have “invert” structures with isolated coordination polyhedra and extensive intermediate range order in. In this proposal, we will study two base compositions, a metaphosphate (MPO3) and M4P2O7 (M=Li or Na) to compare and contrast the medium range ordering. Molecular dynamics simulations of these systems is show development of ordering at the intermediate length scale and development (in the simulations) of small angle features, not accessed in the study completed at GEM. Therefore we will evaluate the development of intermediate range ordering and small angle features using the full Q range available at NIMROD. We will study 12 samples and evaluate structures as a function of nitrogen and also as a function of the two alkali cations, lithium and sodium.
DOI: 10.3535/la8-cmn-m3v
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/tty-fb2-g4n
title: Nothofagus betuloides (Mirb.) Oerst.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2300069
title: DM Xpress – Mesoscale Assembly in Porous Liquids

description: Porous liquids are a class of materials that combine fluidity with some of the properties of microporous solids, such as high and selective uptake of other molecules. Porosity in a liquid can be achieved by the dissolution of porous organic cages at high concentrations in solvents whose molecular constituents are too large to occupy their pores. Typically, these systems are reported and studied as isotropic, unordered liquids, but in an attempt to understand the structure of these cage-based porous liquids by combining neutron diffraction experiments with molecular dynamics simulations, we have found evidence of cage aggregation and the subsequent formation of a branched 3-dimensional network consistent with a mass fractal. Subsequent studies of the birefringence in these liquids using polarising optical microscopy to investigate the formation of ordered phases, has led us to now further understand that their formation is highly sensitive with birefringence indicative of longer range ordering typically observed after 4-14 days. Therefore, to finalise a drafted manuscript for publication, we propose to repeat the neutron scattering experiment on a freshly prepared sample of the previously studied porous liquid to definitively confirm the presence of the mass fractal in the studied porous liquid.
DOI: 10.5286/isis.e.rb2300069-1
title: DM Xpress – Mesoscale Assembly in Porous Liquids

description: Porous liquids are a class of materials that combine fluidity with some of the properties of microporous solids, such as high and selective uptake of other molecules. Porosity in a liquid can be achieved by the dissolution of porous organic cages at high concentrations in solvents whose molecular constituents are too large to occupy their pores. Typically, these systems are reported and studied as isotropic, unordered liquids, but in an attempt to understand the structure of these cage-based porous liquids by combining neutron diffraction experiments with molecular dynamics simulations, we have found evidence of cage aggregation and the subsequent formation of a branched 3-dimensional network consistent with a mass fractal. Subsequent studies of the birefringence in these liquids using polarising optical microscopy to investigate the formation of ordered phases, has led us to now further understand that their formation is highly sensitive with birefringence indicative of longer range ordering typically observed after 4-14 days. Therefore, to finalise a drafted manuscript for publication, we propose to repeat the neutron scattering experiment on a freshly prepared sample of the previously studied porous liquid to definitively confirm the presence of the mass fractal in the studied porous liquid.
DOI: 10.5286/isis.e.rb2390127-1
title: Neutron Reflectivity meausments of NiFe/Tb thin films
DOI: 10.3535/knt-vs0-hy0
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2390121-1
title: Diffusion in the prototype Na-conducting electrolyte material Na1+xZr2SixP3−xO12
DOI: 10.5286/isis.e.rb2390127
title: Neutron Reflectivity meausments of NiFe/Tb thin films
DOI: 10.21233/n31z2r
title: Baker Lake Site 3 pollen surface sample dataset

description: Raw data for the Baker Lake Site 3 pollen surface sample dataset submitted to the Neotoma Paleoecology Database. Data is available through the landing page in JSON format. The landing page referenced by the DOI also contains links to publications and a map-based viewer for the dataset. The Neotoma Paleoecology Database maintains a homepage at https://www.neotomadb.org.
DOI: 10.3535/9qz-3x5-yy6
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/td0-sq6-vmw
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220251-2
title: Temperature dependent flexible proton transfer systems
DOI: 10.5286/isis.e.rb2220604-2
title: Full-tensor measurement of grain-orientation-dependent residual stresses in cyclically deformed Eurofer97 (ENGIN-X)
DOI: 10.5286/isis.e.rb2390121
title: Diffusion in the prototype Na-conducting electrolyte material Na1+xZr2SixP3−xO12
DOI: 10.3535/pv5-yqt-sqv
title: Astelia samoense (Skottsb.) Birch

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/qvw-z2s-ksv
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310339
title: SANS study of the nanosized features in oxide dispersion strengthened alloys

description: The development of new materials with improved performance is necessary to achieve the worldwide aim of sustainable growth. Nuclear fusion is one of the most promising options to cope with the increase in global energy demand from non-fossil energy sources. The energy, i.e. the electricity, is generated under extreme conditions inside of these reactors. Thus, the structural materials that sustain the reactor play a major role in the viability of fusion energy power. ODS RAF steels are among the most advanced materials for structural systems and in nuclear devices. They are currently investigated as improved structural material candidates for nuclear fusion reactors. These materials exhibit high resistance to deformation and to neutron radiation at very elevated temperatures. Thus, the aim of my work is to investigate two ODS RAF steels with nominal composition Fe–14Cr–2W–0.4Ti-0.3Y2O3 and Fe–14Cr–2W–0.3Zr-0.24Y (wt. %). We will obtain a multidisciplinary analysis of the steel under study by means of different characterization techniques. First, we focus on the microstructure characterization by electron microscopy techniques; second, we link the mechanical response of the material to the microstructure characterization; and third, we use advance techniques of characterization for a more detailed analysis as X-Ray Absorption Spectroscopy and Small-Angle Neutron Scattering.
DOI: 10.5286/isis.e.rb2310339-1
title: SANS study of the nanosized features in oxide dispersion strengthened alloys

description: The development of new materials with improved performance is necessary to achieve the worldwide aim of sustainable growth. Nuclear fusion is one of the most promising options to cope with the increase in global energy demand from non-fossil energy sources. The energy, i.e. the electricity, is generated under extreme conditions inside of these reactors. Thus, the structural materials that sustain the reactor play a major role in the viability of fusion energy power. ODS RAF steels are among the most advanced materials for structural systems and in nuclear devices. They are currently investigated as improved structural material candidates for nuclear fusion reactors. These materials exhibit high resistance to deformation and to neutron radiation at very elevated temperatures. Thus, the aim of my work is to investigate two ODS RAF steels with nominal composition Fe–14Cr–2W–0.4Ti-0.3Y2O3 and Fe–14Cr–2W–0.3Zr-0.24Y (wt. %). We will obtain a multidisciplinary analysis of the steel under study by means of different characterization techniques. First, we focus on the microstructure characterization by electron microscopy techniques; second, we link the mechanical response of the material to the microstructure characterization; and third, we use advance techniques of characterization for a more detailed analysis as X-Ray Absorption Spectroscopy and Small-Angle Neutron Scattering.
DOI: 10.5286/isis.e.rb2310449-1
title: Symmetric or Asymmetric? Self-assembly of bola-formed nonionic surfactants EnC12Em

description: Symmetric and asymmetric bola-form nonionic surfactants offer interesting self-assembled nanostructures and solubilisation features. We propose a set of SANS studies to help understand how symmetricity affects the self-assembly of these bola-formed nonionic surfactants. We have synthesised several symmetric and asymmetric bola-formed nonionic surfactants EnC12Em (n + m = 8) including E2C12E6, E3C12E5, and E4C12E4. Our NMR and MS results indicated that all EnC12Em are monodisperse and pure. The surface tension and micellar size change against temperature for the bola-formed nonionic surfactants EnC12Em varied significantly, indicating the great impact by symmetricity. SANS is about the only technique to determine the size and shape of the nanostructures formed by symmetric and asymmetric bola-formed nonionic surfactants EnC12Em. When combined with deuterium incorporation to surfactants and solvent, it is possible to determine more detailed assembled patterns of these nanoaggregates. We request 2 days of SANS2d or Larmor time.
DOI: 10.3535/y27-kn3-l2w
title: Astelia samoense (Skottsb.) Birch

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/yx5-62q-y1h
title: Thespesia lampas (Cav.) Dalzell & A. Gibson

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220303-3
title: Characterization of nanoparticles diluted in a solvent employed for the development of nanoscintillator detectors
DOI: 10.5286/isis.e.rb2300032
title: Development of negative muon data analysis through measurements of standard samples

description: In the past few years, the interest around the use of negative muons for the characterisation of archaeological material has grown rapidly. With negative muons, users can perform both compositional analysis and depth profiling, thanks to the depth-selective penetration of the muon beam. Many samples have been measured at the ISIS facility, with great interest towards metallic materials. However, given the novelty of the technique (called Muonic atom X-ray Emission spectroscopy - µ-XES) very few benchmark tests - that can be used as a reference for material investigation - have been performed over the last years. Here, we propose the measurement of different kinds of standard: gilded copper and copper alloys. The first will be used for the development of the data analysis coupled with Monte Carlo simulations: the standars sample will be modelled in two different simulation software to evaluate the capabilities of the two software to reproduce negative muon data. The second will be used for reproducing reliable calibration curves and to evaluate the variation of copper content in a multi-layered structure. With this work, we aim to provide an improvement to the data analysis and data interpretation of a negative muon experiment.
DOI: 10.5286/isis.e.rb2300032-1
title: Development of negative muon data analysis through measurements of standard samples

description: In the past few years, the interest around the use of negative muons for the characterisation of archaeological material has grown rapidly. With negative muons, users can perform both compositional analysis and depth profiling, thanks to the depth-selective penetration of the muon beam. Many samples have been measured at the ISIS facility, with great interest towards metallic materials. However, given the novelty of the technique (called Muonic atom X-ray Emission spectroscopy - µ-XES) very few benchmark tests - that can be used as a reference for material investigation - have been performed over the last years. Here, we propose the measurement of different kinds of standard: gilded copper and copper alloys. The first will be used for the development of the data analysis coupled with Monte Carlo simulations: the standars sample will be modelled in two different simulation software to evaluate the capabilities of the two software to reproduce negative muon data. The second will be used for reproducing reliable calibration curves and to evaluate the variation of copper content in a multi-layered structure. With this work, we aim to provide an improvement to the data analysis and data interpretation of a negative muon experiment.
DOI: 10.3535/9c3-lem-gwb
title: Viola portalesia Gay

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/gc9-a4d-2f3
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.