cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb1920738-1
title: Effects of Chiral Components on the Structure of Deep Eutectic Solvents

description: Deep eutectic solvents (DES) are novel liquids composed of inexpensive components, and are non-flammable, with a low volatility. One problem with DES is frequently their relatively high viscosity so selecting components which make a tractable liquid with low enough melting point and viscosity to be useful in applications is challenging. Here we wish to probe the structure of DES which have similar components but very different viscosities & melting points, based on tartaric acid (TA) with either choline chloride or urea, both frequently used in DES formulation. TA-based DES also allow us to study the role of chiral components on DES structure, since the D- and L- forms are both readily availably, and can be mixed to make a racemate. We will compare the structures of choline chloride:TA, urea:TA, and related urea:potassium sodium tartrate which span a range of viscosities & melting points
DOI: 10.5286/isis.e.rb1920112
title: Lithium/ammonia intercalates of Bismuth Selenide

description: This proposal is to explore new lithium/ammonia intercalates of bismuth selenide (Bi2Se3) that we have identified using in situ X-ray powder diffraction experiments. New ammonia-rich phases have been identified and we need to use neutron powder diffraction to locate the light atoms (Li, H/D, N) in the Li/NH3 layer between the bismuth selenide slabs. We will use low temperature measurements to localise the intercalate species, and will use both NH3 and ND3-containing samples to constrain the structure refinements
DOI: 10.5286/isis.e.rb1920112-1
title: Lithium/ammonia intercalates of Bismuth Selenide

description: This proposal is to explore new lithium/ammonia intercalates of bismuth selenide (Bi2Se3) that we have identified using in situ X-ray powder diffraction experiments. New ammonia-rich phases have been identified and we need to use neutron powder diffraction to locate the light atoms (Li, H/D, N) in the Li/NH3 layer between the bismuth selenide slabs. We will use low temperature measurements to localise the intercalate species, and will use both NH3 and ND3-containing samples to constrain the structure refinements
DOI: 10.5286/isis.e.rb1920599
title: Excited/Ground State of Kekulé di-radical Material Bisphenalenyl

description: Kekulé di-radical (KDR) with two radical centers of independent spins has a low-spin ground state (singlet S0 with antiparallel spins), and interestingly high-spin triplets (T1) can be thermally activated and populated at high temperature to advance the room-temperature spin-active properties of KDR materials. Hence, it is important to microscopically study the electronic structures of S0 and T1 of KDRs. We plan to use photo-pump muon-probe muSR to learn photo induced effect on muSR spectra at 10K, where the ground states are mostly populated before photo excitation, to demonstrate that muon can the study the differences in electronic structures of T1 and S0 in KDR materials, while other methods may not resolve signals due to broadening effects in solids. Sample was chosen due to its symmetry and simplicity. Relevant muSR spectra in ground state has been done. This is a follow-up work.
DOI: 10.5286/isis.e.rb1920599-1
title: Excited/Ground State of Kekulé di-radical Material Bisphenalenyl

description: Kekulé di-radical (KDR) with two radical centers of independent spins has a low-spin ground state (singlet S0 with antiparallel spins), and interestingly high-spin triplets (T1) can be thermally activated and populated at high temperature to advance the room-temperature spin-active properties of KDR materials. Hence, it is important to microscopically study the electronic structures of S0 and T1 of KDRs. We plan to use photo-pump muon-probe muSR to learn photo induced effect on muSR spectra at 10K, where the ground states are mostly populated before photo excitation, to demonstrate that muon can the study the differences in electronic structures of T1 and S0 in KDR materials, while other methods may not resolve signals due to broadening effects in solids. Sample was chosen due to its symmetry and simplicity. Relevant muSR spectra in ground state has been done. This is a follow-up work.
DOI: 10.5286/isis.e.rb1920678
title: Hydrocarbon Fluid Structures in Nanoconfinement

description: Shale or tight oil is trapped in nano-porous rocks and is expected to play a key role in the energy supply in the future. Due to confinement, trapped fluids exhibit changes in their properties (i.e., bubble point & transport/flow). Presently, there are no accurate and well-accepted models for the properties of nano-confined fluids. Our target is to explore the structure of hydrocarbon fluids in confinement with wide-angle neutron scattering. Comparing the deviation in bulk vs. confined structure will unveil novel molecular-scale mechanisms for these property changes, and will benchmark molecular simulations. Accurate thermodynamic and transport models for confined fluids will help to estimate oil reserves, improve oil recovery, and aid in understanding the fundamental chemical physical influences that dictate confined fluid properties.
DOI: 10.5286/isis.e.rb1920678-1
title: Hydrocarbon Fluid Structures in Nanoconfinement

description: Shale or tight oil is trapped in nano-porous rocks and is expected to play a key role in the energy supply in the future. Due to confinement, trapped fluids exhibit changes in their properties (i.e., bubble point & transport/flow). Presently, there are no accurate and well-accepted models for the properties of nano-confined fluids. Our target is to explore the structure of hydrocarbon fluids in confinement with wide-angle neutron scattering. Comparing the deviation in bulk vs. confined structure will unveil novel molecular-scale mechanisms for these property changes, and will benchmark molecular simulations. Accurate thermodynamic and transport models for confined fluids will help to estimate oil reserves, improve oil recovery, and aid in understanding the fundamental chemical physical influences that dictate confined fluid properties.
DOI: 10.5286/isis.e.rb1970126
title: Measurement of muonic X-rays using a segmented calorimeter towards an observation of parity violation in muonic atoms

description: The proposed experiment aims to establish a detector system for a measurement of parity-violating effect in muonic atoms. A measurement of parity violation in atoms is a precision test of the standard model of particle physics via the determination of the Weinberg angle at low-energy scale. Furthermore, atomic parity violation in muonic atoms provides a unique opportunity to search for an unknown particle coupling to the muon. Parity violation in muonic atoms can be observed by a detection of x-ray emission associated with a parity-odd transition. In order to observe the process with small branching-ratio, a dedicated x-ray detector is necessary. The detector consists of inorganic scintillator crystal, silicon photomultiplier, and fast readout electronics. In the proposed experiment, energy and timing resolution and high-rate capability of the detector are evaluated.
DOI: 10.5286/isis.e.rb1970126-1
title: Measurement of muonic X-rays using a segmented calorimeter towards an observation of parity violation in muonic atoms

description: The proposed experiment aims to establish a detector system for a measurement of parity-violating effect in muonic atoms. A measurement of parity violation in atoms is a precision test of the standard model of particle physics via the determination of the Weinberg angle at low-energy scale. Furthermore, atomic parity violation in muonic atoms provides a unique opportunity to search for an unknown particle coupling to the muon. Parity violation in muonic atoms can be observed by a detection of x-ray emission associated with a parity-odd transition. In order to observe the process with small branching-ratio, a dedicated x-ray detector is necessary. The detector consists of inorganic scintillator crystal, silicon photomultiplier, and fast readout electronics. In the proposed experiment, energy and timing resolution and high-rate capability of the detector are evaluated.
DOI: 10.5286/isis.e.rb1910632
title: High resolution study of structural distortions in BaIrO3

description: BaIrO3 displays complex electronic and magnetic behaviour which has been linked to possible charge density wave formation around the magnetic ordering temperature of 180 K. Despite detailed physical property measurements by a wide range of techniques which have identified three phase transitions in this material (at 30 K, 80 K and 180 K), the changes in the crystal structure as a function of temperature remain unresolved. This study aims to rectify the situation by performing high resolution neutron diffraction measurements as a function of temperature on a 193Ir-enriched sample. This will allow us to explore the structural distortions and phase transitions in BaIrO3 in detail, aiding our understanding of the relation of the crystal structure to the ferromagnetism and the nature of the electronic structure changes which occur at the three reported transitions.
DOI: 10.5286/isis.e.rb1920033
title: The NCS study of the hydrogen sublattice in the Pd-doped HxWO3 tungsten bronze

description: The hydrogen tungsten bronzes HxWO3 are promising materials because of their potential applications in hydrogen technology. Their potential applications are related to the collective behaviour of the hydrogen sub-lattice within the bronze crystal structure. From the neutron Compton (NCS) scattering point of view, it is the ability to track the emergence of an ordered behaviour out of individual interactions that seems to be intriguing. For the NCS study, we propose to use a Pd-decorated cubic polymorph of WO3 (c-WO3) as staring material for the bronze formation, rather than the monoclinic WO3 polymorph typically used for the purpose.
DOI: 10.5286/isis.e.rb1920033-1
title: The NCS study of the hydrogen sublattice in the Pd-doped HxWO3 tungsten bronze

description: The hydrogen tungsten bronzes HxWO3 are promising materials because of their potential applications in hydrogen technology. Their potential applications are related to the collective behaviour of the hydrogen sub-lattice within the bronze crystal structure. From the neutron Compton (NCS) scattering point of view, it is the ability to track the emergence of an ordered behaviour out of individual interactions that seems to be intriguing. For the NCS study, we propose to use a Pd-decorated cubic polymorph of WO3 (c-WO3) as staring material for the bronze formation, rather than the monoclinic WO3 polymorph typically used for the purpose.
DOI: 10.5286/isis.e.rb1920347
title: INS Study of Molybdenum Clay Hydrodeoxygenation Catalyst: Effect of Promoter - TOSCA

description: The Indonesian government has pledged to ensure that all gas stations in Indonesia switch from diesel fuel to a biofuel blend produced from palm oil by 2025, as part of its drive to reduce the reliance on fossil fuels. Bio-oil is a promising non-food source of biofuel but further upgrading processes is necessary to reach a fuel grade quality. We have attempted to upgrade bio-oil via a hydrodeoxygenation process using our bentonite based catalyst, NiMo/PILC, and INS results show that the bio-oil compounds were selectivity adsorbed on the catalyst giving superior activity compared to the conventional NiMo/Al2O3 catalyst. In order to further optimise the catalytic process, it is essential to investigate the effect of promoter (Ni, Co) on the catalyst. To this end, we wish to use INS to study the details of the interaction between a CoMo/PILC catalyst and the compounds contained in bio-oil.
DOI: 10.5286/isis.e.rb1920347-1
title: INS Study of Molybdenum Clay Hydrodeoxygenation Catalyst: Effect of Promoter - TOSCA

description: The Indonesian government has pledged to ensure that all gas stations in Indonesia switch from diesel fuel to a biofuel blend produced from palm oil by 2025, as part of its drive to reduce the reliance on fossil fuels. Bio-oil is a promising non-food source of biofuel but further upgrading processes is necessary to reach a fuel grade quality. We have attempted to upgrade bio-oil via a hydrodeoxygenation process using our bentonite based catalyst, NiMo/PILC, and INS results show that the bio-oil compounds were selectivity adsorbed on the catalyst giving superior activity compared to the conventional NiMo/Al2O3 catalyst. In order to further optimise the catalytic process, it is essential to investigate the effect of promoter (Ni, Co) on the catalyst. To this end, we wish to use INS to study the details of the interaction between a CoMo/PILC catalyst and the compounds contained in bio-oil.
DOI: 10.5286/isis.e.rb2000031
title: Self-assembly in multifunctional electrolytes for structural supercapacitors

description: Multifunctional materials and devices offer significant weight and/or volume savings and this is important in mobile products such as portable electronics, electrical/hybrid vehicles, etc. One example of multifunctional device is one which possesses a combination of structural performance and energy storage ability, i.e. a structural energy storage device. This proposal aims to improve our understanding of multifunctional electrolytes which are essential components of structural storage devices, specifically structural supercapacitors. Preparation of a multifunctional electrolyte is a complex issue. Previous studies carried out by the proposers have shown that electrolytes with a bicontinuous structure have a promising set of properties. The proposed SANS experiment will help us understanding how the bicontinuous phases form and this is essential to be able to develop existing systems.
DOI: 10.5286/isis.e.rb2000031-1
title: Self-assembly in multifunctional electrolytes for structural supercapacitors

description: Multifunctional materials and devices offer significant weight and/or volume savings and this is important in mobile products such as portable electronics, electrical/hybrid vehicles, etc. One example of multifunctional device is one which possesses a combination of structural performance and energy storage ability, i.e. a structural energy storage device. This proposal aims to improve our understanding of multifunctional electrolytes which are essential components of structural storage devices, specifically structural supercapacitors. Preparation of a multifunctional electrolyte is a complex issue. Previous studies carried out by the proposers have shown that electrolytes with a bicontinuous structure have a promising set of properties. The proposed SANS experiment will help us understanding how the bicontinuous phases form and this is essential to be able to develop existing systems.
DOI: 10.5281/zenodo.3542251
title: IO Islamic 747. Persian Translation of Abû Ja'far Muhammad bin Jarir bin Yazid al Ṭabari's General History

description: IO Islamic 747. Persian Translation of Abû Ja’far Muhammad bin Jarir bin Yazid al Ṭabari’s General History
DOI: 10.5281/zenodo.3542252
title: IO Islamic 747. Persian Translation of Abû Ja'far Muhammad bin Jarir bin Yazid al Ṭabari's General History

description: IO Islamic 747. Persian Translation of Abû Ja’far Muhammad bin Jarir bin Yazid al Ṭabari’s General History
DOI: 10.5286/isis.e.rb1910103
title: Morphological characterization through neutron imaging of Japanese sword microstructure

description: We intend to obtain morphological information about the composite structure of three Japanese swords (welding, multilayered structures, defects, quenched areas, utsuri). We plan to perform white beam tomography to analyse the morphological features on the whole volume of the blades, and time of flight radiography wavelength scan to study the microstructure (strain, defect density, texture) of ferrite and martensite phases.
DOI: 10.5286/isis.e.rb1910103-1
title: Morphological characterization through neutron imaging of Japanese sword microstructure

description: We intend to obtain morphological information about the composite structure of three Japanese swords (welding, multilayered structures, defects, quenched areas, utsuri). We plan to perform white beam tomography to analyse the morphological features on the whole volume of the blades, and time of flight radiography wavelength scan to study the microstructure (strain, defect density, texture) of ferrite and martensite phases.
DOI: 10.5286/isis.e.rb1910632-1
title: High resolution study of structural distortions in BaIrO3

description: BaIrO3 displays complex electronic and magnetic behaviour which has been linked to possible charge density wave formation around the magnetic ordering temperature of 180 K. Despite detailed physical property measurements by a wide range of techniques which have identified three phase transitions in this material (at 30 K, 80 K and 180 K), the changes in the crystal structure as a function of temperature remain unresolved. This study aims to rectify the situation by performing high resolution neutron diffraction measurements as a function of temperature on a 193Ir-enriched sample. This will allow us to explore the structural distortions and phase transitions in BaIrO3 in detail, aiding our understanding of the relation of the crystal structure to the ferromagnetism and the nature of the electronic structure changes which occur at the three reported transitions.
DOI: 10.5286/isis.e.rb1920513
title: Strain mapping of laser welded EUROFER97 using Bragg edge neutron imaging

description: Eurofer97 is the main structural material targeted for the in-vessel components of demonstration (DEMO) fusion reactors. To facilitate Remote Maintenance (RM) of a demonstration fusion plant, the RM teams at Culham Centre for Fusion Energy (CCFE) propose to utilise lasers to join and cut in-vessel components. Understanding the residual stress inherited from the rapid welding process, and how this stress evolves at elevated temperature, are both essential information to avoiding actastropic failure of key components in DEMO fusion reactors. The current proposed study aims to characterise the residual stress in as-welded and post heat treated Eurofer97 steels using Bragg edge neutron imaging technique for improving the structural integrity assessment of welded components. This project is funded by Surrey Doctoral College Studentship in collaboration with CCFE.
DOI: 10.5286/isis.e.rb1920513-1
title: Strain mapping of laser welded EUROFER97 using Bragg edge neutron imaging

description: Eurofer97 is the main structural material targeted for the in-vessel components of demonstration (DEMO) fusion reactors. To facilitate Remote Maintenance (RM) of a demonstration fusion plant, the RM teams at Culham Centre for Fusion Energy (CCFE) propose to utilise lasers to join and cut in-vessel components. Understanding the residual stress inherited from the rapid welding process, and how this stress evolves at elevated temperature, are both essential information to avoiding actastropic failure of key components in DEMO fusion reactors. The current proposed study aims to characterise the residual stress in as-welded and post heat treated Eurofer97 steels using Bragg edge neutron imaging technique for improving the structural integrity assessment of welded components. This project is funded by Surrey Doctoral College Studentship in collaboration with CCFE.
DOI: 10.5286/isis.e.rb1920632
title: Investigation of magnetic structures and ion diffusion in layered honeycomb alkali-ion battery materials

description: The layered ternary oxide system has been intensively studied in the past as it exhibits various remarkable properties, such as its electrochemical behavior as positive electrode of alkali-ion batteries, interesting thermoelectric properties for high sodium content, or even superconductivity for hydrated compositions. The lamellar structure is one of the key points to explain all these wide range of physical properties. Moreover transition metal octahedra forms honeycomb which the interplay between nearest-neighbor antiferromagnetic (AFM) and next-nearest neighbor AFM is expected to produce rich magnetic properties with exotic magnetic ground states. The general context of this study is the investigation of new honeycomb transition metal oxides, in connection with their potential exotic magnetic states and battery cathode properties.
DOI: 10.5286/isis.e.rb1920632-1
title: Investigation of magnetic structures and ion diffusion in layered honeycomb alkali-ion battery materials

description: The layered ternary oxide system has been intensively studied in the past as it exhibits various remarkable properties, such as its electrochemical behavior as positive electrode of alkali-ion batteries, interesting thermoelectric properties for high sodium content, or even superconductivity for hydrated compositions. The lamellar structure is one of the key points to explain all these wide range of physical properties. Moreover transition metal octahedra forms honeycomb which the interplay between nearest-neighbor antiferromagnetic (AFM) and next-nearest neighbor AFM is expected to produce rich magnetic properties with exotic magnetic ground states. The general context of this study is the investigation of new honeycomb transition metal oxides, in connection with their potential exotic magnetic states and battery cathode properties.
DOI: 10.25810/fj1y-8c74.10
title: International Wire Services Coverage of Climate Change or Global Warming, 2004-2019 - October 2019

description: The Media and Climate Change Observatory Data monitors 79 sources (across newspapers, radio and TV) in 38 countries in seven different regions around the world. Data is assembled by accessing archives through the Lexis Nexis, Proquest and Factiva databases via the University of Colorado libraries. More information may be found at: http://sciencepolicy.colorado.edu/icecaps/research/media_coverage/index.html. These data include Excel (.xlsx), CSV (.csv), and plain-text README files (.txt).
DOI: 10.5286/isis.e.rb1920194
title: Multiple Coulomb phase in CsNiCrF6

description: The compound CsNiCrF6 hosts multiple Coulomb phases. A Coulomb phase is a material in which a relationship can be identified between some part of the material's structure and a field in which all the lines make closed loops (i.e. it is non-divergent). Magnetic Coulomb phases, in which the arrangements of magnetic moments are described by a non-divergent field are known, e.g. spin ice, but structural Coulomb phases are also possible. CsNiCrF6 is proposed to host Coulomb phase correlations in two elements of its crystal structure and in its magnetic moments. Here we propose to use SXD to measure Bragg and diffuse scattering that can be used to better control our modelling of the structural Coulomb phases, essential to understand the microscopic interactions that produce the magnetic Coulomb phase, and thermodynamic properties such as anomalous glass-like thermal conductivity.
DOI: 10.5286/isis.e.rb1920194-1
title: Multiple Coulomb phase in CsNiCrF6

description: The compound CsNiCrF6 hosts multiple Coulomb phases. A Coulomb phase is a material in which a relationship can be identified between some part of the material's structure and a field in which all the lines make closed loops (i.e. it is non-divergent). Magnetic Coulomb phases, in which the arrangements of magnetic moments are described by a non-divergent field are known, e.g. spin ice, but structural Coulomb phases are also possible. CsNiCrF6 is proposed to host Coulomb phase correlations in two elements of its crystal structure and in its magnetic moments. Here we propose to use SXD to measure Bragg and diffuse scattering that can be used to better control our modelling of the structural Coulomb phases, essential to understand the microscopic interactions that produce the magnetic Coulomb phase, and thermodynamic properties such as anomalous glass-like thermal conductivity.