cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e/isis.e.rb2310722-2
title: Transmission Neutron Scattering for Bragg Edge Analysis on bronze and Cu-based materials

description: Historical metallurgy, and in particular bronze and other copper alloy metallurgy, represents a research topic of strong importance in the study of artistic and technological evolution of different civilizations. Archaeometallurgy studies are generally carried out by means of destructive analytics, such as metallography and scanning electron microscope analysis on cross sections, while neutron research based activity is usually limited to specific topics or seen as a mysterious still unknown method by the scholars acting in this field. Since heritage science aims at preserving cultural artefacts and neutron methods have the potential of being the best non-destructive option for investigating bronze artefacts non-destructively, we proposed a project aiming to develop and calibrate, in a quantitative way, non-invasive techniques based on neutron absorption and scattering for analysis of historical and archaeological copper alloy artefacts. CHNet_BRONZE will address and combine three powerful bulk analysis methods: ToF-ND, BENT and NRTI measurements on different powders of high-purity copper, lead and calibrated mixtures of them, for optimizing the elemental, phase and microstructural calibration of the parameters obtained by the three measuring techniques, to exploit such refinement for the interpretation of the data collected (at present and in the future) on historical samples. This proposal is relative to BENT.
DOI: 10.5286/isis.e/isis.e.rb2420241-1
title: Titanium off-centre displacement in isotopically substituted SrTiO3

description: Bulk SrTiO3 undergoes a ferroelectric phase transition in ambient conditions only when oxygen atoms have been replaced with a heavier isotope. Depending on the experimental technique chosen, there are both indications of the transition being of the displacive type, or order-disorder type. It is possible that the Ti atoms in SrTiO3 are displaced off-centre even in the tetragonal phase, but due to the randomness of the displacement direction the average structure (as seen in diffraction experiments) remains tetragonal. We propose a pair distribution function measurement on two powder samples of SrTiO3, one isotopically normal, and the other containing 60% oxygen-18 isotope. By using Polaris we will gain access to values of Q large enough to detect displacement of the magnitude of 0.04-0.05 Angstrom, which is the range predicted by modelling and implied by gamma ray diffraction experiments. The experiment will verify if titanium atoms are randomly displaced in SrTiO3 already above the ferroelectric transition temperature, and if the magnitude of the displacement is affected by the change in oxygen mass.
DOI: 10.5286/isis.e/isis.e.rb2455009-2
title: “Damage Tolerance of Ni-Based Aerospace High-Entropy Alloy at Cryogenic Temperatures
DOI: 10.3535/lkz-e9g-x4f
title: Sarcopoterium spinosum (L.) Spach

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/wn8-b1q-aw5
title: Plantago L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2420241
title: Titanium off-centre displacement in isotopically substituted SrTiO3

description: Bulk SrTiO3 undergoes a ferroelectric phase transition in ambient conditions only when oxygen atoms have been replaced with a heavier isotope. Depending on the experimental technique chosen, there are both indications of the transition being of the displacive type, or order-disorder type. It is possible that the Ti atoms in SrTiO3 are displaced off-centre even in the tetragonal phase, but due to the randomness of the displacement direction the average structure (as seen in diffraction experiments) remains tetragonal. We propose a pair distribution function measurement on two powder samples of SrTiO3, one isotopically normal, and the other containing 60% oxygen-18 isotope. By using Polaris we will gain access to values of Q large enough to detect displacement of the magnitude of 0.04-0.05 Angstrom, which is the range predicted by modelling and implied by gamma ray diffraction experiments. The experiment will verify if titanium atoms are randomly displaced in SrTiO3 already above the ferroelectric transition temperature, and if the magnitude of the displacement is affected by the change in oxygen mass.
DOI: 10.5286/isis.e/isis.e.rb2420254
title: The dynamic assembly structure of insulin in oral nanoencapsulations studied by SANS

description: The oral delivery of insulin in diabetes treatment can improve patient compliance and avoidance of peripheral hyperinsulinemia. The mainbarriers faced by oral insulin are degradation by low pH and proteolytic enzymes in the gastrointestinal tract. The construction of oral insulin delivery systems need to be designed to keep insulin in stable hexamer assembly system in physiological environment. This project is focused on understanding the structure and dynamic assembly of insulin in different environments with or without protection of nanoencapsulations. Due to the difference of scattering length densities (SLD) of neutron between insulin and nanoencapsulations, we aim to establish an integrative structural and dynamical in situ characterizing platform by combining various neutron scattering techniques. Small angle neutron scattering (SANS) combined with contrast match strategy was used to characterize the structure of insulin in solution and in nanoencapsulations, and to investigate the dynamic assembly structure of insulin with or without nanoencapsulations in response to different environment.
DOI: 10.5286/isis.e/isis.e.rb2420254-1
title: The dynamic assembly structure of insulin in oral nanoencapsulations studied by SANS

description: The oral delivery of insulin in diabetes treatment can improve patient compliance and avoidance of peripheral hyperinsulinemia. The mainbarriers faced by oral insulin are degradation by low pH and proteolytic enzymes in the gastrointestinal tract. The construction of oral insulin delivery systems need to be designed to keep insulin in stable hexamer assembly system in physiological environment. This project is focused on understanding the structure and dynamic assembly of insulin in different environments with or without protection of nanoencapsulations. Due to the difference of scattering length densities (SLD) of neutron between insulin and nanoencapsulations, we aim to establish an integrative structural and dynamical in situ characterizing platform by combining various neutron scattering techniques. Small angle neutron scattering (SANS) combined with contrast match strategy was used to characterize the structure of insulin in solution and in nanoencapsulations, and to investigate the dynamic assembly structure of insulin with or without nanoencapsulations in response to different environment.
DOI: 10.34816/ifao.archives.232825
title: SAQQARA_nb_1994_03297

description: Référence : nb_1994_03297<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/40v-hpq-6w6
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/c1p-d54-t7h
title: Carex L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb0-17511
title: 0
DOI: 10.5286/isis.e/isis.e.rb2410259-2
title: Structure of the new La3Ni2O7 superconductor under high hydrostatic pressure

description: The very recent report of superconductivity in the bilayer Ruddlesden-Popper (RP) compound La3Ni2O7 has attracted a great deal of attention and raised hopes that this could herald an entirely new family of high-Tc oxides with phenomenology that is unrelated to the cuprates or other known materials. Consequently, there has been a flurry of reports, mostly concerned with theory and modelling, but with relatively little experimental support beyond the initial report (later confirmed by a second group). There is therefore an urgent need to understand the structure/properties relations in this material. In La3Ni2O7, superconductivity appears under applied pressures between 14 GPa and 43.5 GPa with a maximum of ~80 K, and is apparently linked to a structural phase transition at ~10 GPa. However, the crystallographic symmetry of the high-pressure phase is controversial, with conflicting reports that may be related to oxygen non-stoichiometry. Here, we propose to carry out a crystallographic study of La3Ni2O7-x as a function of temperature and pressure. We will study two samples with well-characterised oxygen contents, hence establishing anchor points in the T-P-x phase diagram that will guide future experiments and theory.
DOI: 10.5286/isis.e/isis.e.rb2420386-1
title: Effect of different molecular weights of chitosan stabilized iron oxide nanoparticles for seed germination under abiotic stress conditions
DOI: 10.3535/8ts-mgn-hfh
title: Medicago L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/wk6-lvl-bpa
title: Dactylis glomerata L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2410480
title: Spin dynamics and ground-state of a 3D S=1/2 bcc quantum spin-liquid candidate

description: We have identified a suitable quantum spin liquid (QSL) candidate for the S=1/2 body-centered cubic lattice, where QSL phase have been recently discovered theoretically. We have characterized a polycrystalline sample of NaCa2Cu2(VO4)3 using x-ray diffraction, magnetic measurements, specific heat and polarized neutron diffraction / inelastic scattering. We now wish to confirm the QSL ground-state of NaCa2Cu2(VO4)3 down to mK temperatures and probe the spin dynamics relevant to the QSL regime in the extended region θCW/100 &lt; T &lt; θCW.
DOI: 10.5286/isis.e/isis.e.rb2410480-1
title: Spin dynamics and ground-state of a 3D S=1/2 bcc quantum spin-liquid candidate

description: We have identified a suitable quantum spin liquid (QSL) candidate for the S=1/2 body-centered cubic lattice, where QSL phase have been recently discovered theoretically. We have characterized a polycrystalline sample of NaCa2Cu2(VO4)3 using x-ray diffraction, magnetic measurements, specific heat and polarized neutron diffraction / inelastic scattering. We now wish to confirm the QSL ground-state of NaCa2Cu2(VO4)3 down to mK temperatures and probe the spin dynamics relevant to the QSL regime in the extended region θCW/100 &lt; T &lt; θCW.
DOI: 10.5286/isis.e/isis.e.rb2420386
title: Effect of different molecular weights of chitosan stabilized iron oxide nanoparticles for seed germination under abiotic stress conditions
DOI: 10.34816/ifao.archives.232826
title: SAQQARA_nb_1994_03298

description: Référence : nb_1994_03298<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/5a5-0r8-a2q
title: Cynoglossum creticum Mill.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2310419-3
title: The application of QENS to investigate the isomerization of xylene in zeolites (OSIRIS)

description: The global demand for p-xylene production is significant, totaling 37 Mt in 2014. Following on from a recent initiative to use neutron scattering to investigate a single class of ZSM-5 catalyst for the methanol-to-hydrocarbon reaction, a new academic/industrial project is now looking at the application of different classes of ZSM-5 catalysts for the formation of p-xylene. This proposal seeks to use QENS to characterize the diffusion properties of the catalyst as a function of reaction temperature. The resulting profile will provide information on the deactivation characteristics of a new industrial grade ZSM-5 sample active for p-xylene formation. This QENS application is linked to associated TOSCA and MAPS proposals.
DOI: 10.5286/isis.e/isis.e.rb2410555
title: In Situ Investigation of Deformation Mechanisms of W-Cu Composites for Nuclear Fusion

description: W-Cu composites are candidate materials for heat sink components in nuclear fusion reactors, but there is a paucity of information on the interaction between W and Cu phases, specifically under fusion relevant conditions. Here we propose using in situ neutron diffraction during high temperature tensile loading to elucidate the contribution of the individual phases to the mechanical properties of the composite as a whole.
DOI: 10.5286/isis.e/isis.e.rb2410555-1
title: In Situ Investigation of Deformation Mechanisms of W-Cu Composites for Nuclear Fusion

description: W-Cu composites are candidate materials for heat sink components in nuclear fusion reactors, but there is a paucity of information on the interaction between W and Cu phases, specifically under fusion relevant conditions. Here we propose using in situ neutron diffraction during high temperature tensile loading to elucidate the contribution of the individual phases to the mechanical properties of the composite as a whole.
DOI: 10.3535/vq8-yax-5ap
title: Oxalis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/x90-l7n-6ph
title: Silene L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2410147
title: Efficient production of H2 from water and ethanol through selective reforming

description: It is essential to develop new routes for H2 production with less amount of C1 emission. We created a new route for selective ethanol reforming towards H2 and acetic acid at low temperature, preserving most of the carbon species in value-added liquid products. By precisely tailoring the atomic Pt/Ir species on α-MoC, we successfully preserve the C-C bond in ethanol and promote the reforming of C-H bond in -CH2- with the abundant -OH groups at the metal-support interface with high activity and selectivity. We request 5 days on TOSCA to study the binding dynamics of ethanol and intermediates over the exceptional catalyst (PtIr/MoC). The proposed study will investigate the vibrational spectroscopy of the catalyst, adsorption of guest ethanol and H2O molecules and any possible reaction intermediates on active sites. This study aims to reveal the role of Pt/Ir sites in binding and activation of guest molecules, giving key insights into the efficient H2 production.
DOI: 10.5286/isis.e/isis.e.rb2410147-1
title: Efficient production of H2 from water and ethanol through selective reforming

description: It is essential to develop new routes for H2 production with less amount of C1 emission. We created a new route for selective ethanol reforming towards H2 and acetic acid at low temperature, preserving most of the carbon species in value-added liquid products. By precisely tailoring the atomic Pt/Ir species on α-MoC, we successfully preserve the C-C bond in ethanol and promote the reforming of C-H bond in -CH2- with the abundant -OH groups at the metal-support interface with high activity and selectivity. We request 5 days on TOSCA to study the binding dynamics of ethanol and intermediates over the exceptional catalyst (PtIr/MoC). The proposed study will investigate the vibrational spectroscopy of the catalyst, adsorption of guest ethanol and H2O molecules and any possible reaction intermediates on active sites. This study aims to reveal the role of Pt/Ir sites in binding and activation of guest molecules, giving key insights into the efficient H2 production.
DOI: 10.5286/isis.e/isis.e.rb2420416-1
title: The effect of PCl3 treatment on InP@ZnS quantum dots prepared by an HF free route

description: We propose a time resolved and contrast matching SANS experiment to establish the effect of PCl3 treatment on oleylamine/myristate-capped Indium Phosphide quantum dots (InP QDs) and to characterise the resulting shelled oleylamine-capped InP@ZnS QDs. PCl3 treatment leads to a clear enhancement in the quantum yield of these materials, but its role is unclear – it may be altering the InP core, the alkyl shell or both. Contrast-matching SANS measurements are well suited to this system, being able to separately visualise changes in the InP core and the alkyl shell. In--situ SANS is required as the treated InP QDs are unstable prior to shelling. While the experiment could run on any TS2 beamline, SANS2D is preferred for its high flux and low background crucial to the resolution of the mid-high Q region where more subtle changes in the alkyl shell structure may be observed.
DOI: 10.3535/1cb-nwl-cf8
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/8mj-el4-b4r
title: Lysimachia Tourn. ex L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2420347
title: Solvent-assisted deposition of supported lipid bilayers

description: Supported lipid bilayers (SLBs) are essential in modeling cell membranes for neutron reflection (NR) studies, critical across various scientific fields of science. Traditional SLB formation methods, like vesicle fusion (VF), have limitations concerning the complexity of lipid mixtures and the types of solid supports used. To overcome these challenges, the solvent-assisted lipid bilayer (SALB) method has been introduced, utilizing water-miscible organic solvents like isopropanol or ethanol for lipid deposition on solid supports. This innovative approach allows for broader lipid composition, enhancing the analysis of membrane models.
In previous NR experiments, we found that 10.6 % of Isopropanol remains within the SLB tails. We aim to further optimize the SALB method for NR studies using Isopropanol and EtOH to reduce the amount of solvent retained in the SLB. Additionally, we seek to incubate SALBs with the antimicrobial peptide Melittin, which has previously been studied by NR with SLBs formed by VF, to assess differences in binding due to the SALBs' altered composition (alcohol containing SLB). This work is essential to confirm whether the SALB method can be used to investigate interactions between lipid membranes and proteins and will be supported by QCM-D experiments. Our findings will assess the SALB method's potential in biological research and pharmaceutical applications, potentially revolutionizing drug delivery systems through enhanced membrane model fidelity.
DOI: 10.5286/isis.e/isis.e.rb2420347-1
title: Solvent-assisted deposition of supported lipid bilayers

description: Supported lipid bilayers (SLBs) are essential in modeling cell membranes for neutron reflection (NR) studies, critical across various scientific fields of science. Traditional SLB formation methods, like vesicle fusion (VF), have limitations concerning the complexity of lipid mixtures and the types of solid supports used. To overcome these challenges, the solvent-assisted lipid bilayer (SALB) method has been introduced, utilizing water-miscible organic solvents like isopropanol or ethanol for lipid deposition on solid supports. This innovative approach allows for broader lipid composition, enhancing the analysis of membrane models.
In previous NR experiments, we found that 10.6 % of Isopropanol remains within the SLB tails. We aim to further optimize the SALB method for NR studies using Isopropanol and EtOH to reduce the amount of solvent retained in the SLB. Additionally, we seek to incubate SALBs with the antimicrobial peptide Melittin, which has previously been studied by NR with SLBs formed by VF, to assess differences in binding due to the SALBs' altered composition (alcohol containing SLB). This work is essential to confirm whether the SALB method can be used to investigate interactions between lipid membranes and proteins and will be supported by QCM-D experiments. Our findings will assess the SALB method's potential in biological research and pharmaceutical applications, potentially revolutionizing drug delivery systems through enhanced membrane model fidelity.
DOI: 10.5286/isis.e/isis.e.rb2420416
title: The effect of PCl3 treatment on InP@ZnS quantum dots prepared by an HF free route

description: We propose a time resolved and contrast matching SANS experiment to establish the effect of PCl3 treatment on oleylamine/myristate-capped Indium Phosphide quantum dots (InP QDs) and to characterise the resulting shelled oleylamine-capped InP@ZnS QDs. PCl3 treatment leads to a clear enhancement in the quantum yield of these materials, but its role is unclear – it may be altering the InP core, the alkyl shell or both. Contrast-matching SANS measurements are well suited to this system, being able to separately visualise changes in the InP core and the alkyl shell. In--situ SANS is required as the treated InP QDs are unstable prior to shelling. While the experiment could run on any TS2 beamline, SANS2D is preferred for its high flux and low background crucial to the resolution of the mid-high Q region where more subtle changes in the alkyl shell structure may be observed.
DOI: 10.3535/8zx-vs0-mee
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/fde-6r2-69b
title: Brassicaceae Burnett

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2410380
title: AgI doped lithium borate glass structure

description: The borate glass containing lithium atom has strong plasticity, high mechanical stability and fast ion migration characteristics. Therefore, it has great application potential in the field of solid electrolyte and battery cathode materials. Increasing AgI concentration improves room-temperature ionic conductivity but decreases the structural stability of the glass. 0.40Li2O·0.6B2O3 glass has better network structure connectivity and higher density, which can make up for the influence of AgI on the stability of the glass structure. Ag+ can form large ion vacancies in the network structure, which is more conducive to the transfer of Li+. It provides reference for the design and preparation of amorphous materials with better electrical conductivity. Neutron diffraction is an important method to analyze the structure of borate glass. By directly measuring the local structure of borate glass, it can give the interaction and coordination number information of M-O (M stands for metal ion), B-O, O-O, B-B and other atomic pairs in the short and medium range of borate glass microstructure.
DOI: 10.5286/isis.e/isis.e.rb2410380-1
title: AgI doped lithium borate glass structure

description: The borate glass containing lithium atom has strong plasticity, high mechanical stability and fast ion migration characteristics. Therefore, it has great application potential in the field of solid electrolyte and battery cathode materials. Increasing AgI concentration improves room-temperature ionic conductivity but decreases the structural stability of the glass. 0.40Li2O·0.6B2O3 glass has better network structure connectivity and higher density, which can make up for the influence of AgI on the stability of the glass structure. Ag+ can form large ion vacancies in the network structure, which is more conducive to the transfer of Li+. It provides reference for the design and preparation of amorphous materials with better electrical conductivity. Neutron diffraction is an important method to analyze the structure of borate glass. By directly measuring the local structure of borate glass, it can give the interaction and coordination number information of M-O (M stands for metal ion), B-O, O-O, B-B and other atomic pairs in the short and medium range of borate glass microstructure.