cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb1820270
title: Rheo-SANS studies of aqueous creams

description: Aqueous creams are widely used in the treatment of skin conditions like rosacea, dermatitis and psoriasis. They are highly complex chemical mixtures, and our knowledge of their molecular structure, and the relationship between this and their long term stability and clinical benefit to patients is sadly lacking. The investigations to be performed in this study (using the technique of small angle neutron scattering) aim to determine the effect of chemical composition on the internal structure and properties of simple creams prepared according to a British Pharmacopoeial formulation, Through the proposed studies, we hope to gain a better understanding of the molecular structural changes that underlie the observed changes in the viscosity and consistency of the creams that occur on ageing and as the result of including additives like (antimicrobial) preservatives.
DOI: 10.5286/isis.e.rb1820532
title: Quantum Spin Liquid in a triangular rare-earth based magnet

description: The rise of quantum materials observed in the past decades has been a source of great excitement for condensed matter scientists, with the flourishing of new concepts and electronic phases of matter. In quantum magnetism significant efforts have been devoted to the search for new quantum states in condensed matter. In particular the Quantum Spin Liquid (QSL) state has attracted a lot of attention as it shows intriguing collective phenomena such as fractionalized excitations or emergent gauge fields. Here, we propose to use µSR spectroscopy to establish the spin liquid behaviour of a recently synthesized quantum triangular antiferromagnet.
DOI: 10.5281/zenodo.2611684
title: Microsatellite genotypes of South African Cape vulture (Gyps coprotheres)

description: Multilocus microsatellite genotypes of 605 <em>Gyps coprotheres</em> individuals. This first column contains the individual sample identity as provided in Supplementary Data 1 and subsequent columns are allele scores in single row format. Alleles are scored according to their molecular size (in base pairs); missing data is encoded as "0".
DOI: 10.5281/zenodo.2611685
title: Microsatellite genotypes of South African  Cape vulture (Gyps coprotheres)

description: Multilocus microsatellite genotypes of 605 <em>Gyps coprotheres</em> individuals. This first column contains the individual sample identity as provided in Supplementary Data 1 and subsequent columns are allele scores in single row format. Alleles are scored according to their molecular size (in base pairs); missing data is encoded as "0".
DOI: 10.5286/isis.e.rb1810033
title: Neutron Compton Scattering - augmented Muon Spin Rotation: from proton momentum distribution to muonium hyperfine coupling

description: This proposal seeks to pave the way towards establishing a reliable benchmarking protocol for the PIMD-based predictions of magnetic muSR observables. Inspired by the PIMD study of the acetone radical, we propose to measure isopropyl alcohol as a bulk material with a similar local environment around the OH. In order to achieve site specific measurement in an otherwise mass-selective neutron Compton scattering (NCS) technique, we propose to selectively deuterate the sample and obtain D momentum distribution in the deuterated OD bond. Following this, a simple harmonic mass-scaling by the ratio will be applied to obtain the predicted width of the Mu momentum distribution. Finally, the position distribution of Mu will be predicted from the inverse Fourier transform.
DOI: 10.5286/isis.e.rb1810045
title: Spin correlations of a triangular-lattice quantum-spin-liquid candidate

description: A quantum spin liquid (QSL) shows no magnetic order down to zero temperature but the spins are highly entangled. More and more interests are attracted to 2D spin-1/2 triangular-lattice QSL systems with strong spin-orbital coupling including YbMgGaO4, in which our neutron scattering measurements have revealed dispersive spinon excitations with a clear upper excitation edge. Here, we propose to carry out µSR measurements on its isostructural compound TmMgGaO4 single crystals, which shows stronger exchange coupling and non-Kramers doublet ground state, resulting in a different magnetic picture. We will try to figure out its ground state at low temperature and try to evaluate the spin-spin correlation time from the field dependence of λ. Such measurement will help further understanding the QSL ground state, and the results will be compared with that of YbMgGaO4.
DOI: 10.5286/isis.e.rb1810101
title: Investigation of rhombic and other novel ices in graphene oxide membranes

description: Graphene oxide membranes (GOMs) have shown significant promise as filtration devices, since they are impermeable to many substances but not to water. To explain the rapid transport of water through these membranes, it is thought that water forms a two dimensional rhombic crystal at room temperature which glides through nano-scale channels. Inelastic neutron scattering, with its high sensitivity to hydrogen-containing substances, is a very effective method to investigate new water structures and their dynamics. The vibrational modes of water are extremely sensitive to nano-confinement conditions. In our study we hope to confirm the existence of rhombic ice and investigate how it forms inside GOMs by investigating samples with different levels of hydration. We will also confirm that the intercalation of water in bulk graphite oxide produces different water structures to those in GOMs.
DOI: 10.5286/isis.e.rb1810105
title: Quantum critical points in relaxor-type ferroelectric tetragonal tungsten bronzes

description: Quantum Critical Points in ferroelectrics, where the transition temperature is very near absolute zero, are of significant current interest, with publications in Nature-family journals, Physical Review Letters, and other high-impact journals.  However, only a few crystal structures, emphasizing perovskites, have been measured via most techniques.  Potassium lithium tantalate (KLT) has a reported transition at T=7K, but it remains controversial and its cryogenic structure would be clarified by neutron spectroscopy.  KLT is very unusual in other ways: Of several hundred tetragonal tungsten bronzes, only two have the small c-axis triangular sites occupied.  This makes it a Li-ion conductor, and we have already established that it is a relaxor ferroelectric, meaning that its apparent transition temperature depends strongly upon probe frequency.
DOI: 10.5286/isis.e.rb1810167
title: Neutron reflectivity investigation of hydrogen content in Aluminium/Duplex steel coated with hydrogen barrier oxide films

description: The need for structural materials that can resist hydrogen assisted degradation becomes critical for the continuation of the development of the hydrogen economy.  A new neutron reflectivity (NR) approach is exploited to characterise crystallographic changes due to the presence of hydrogen in Al/Al2O3-coated Duplex steel. The degree of hydration after exposure to high pressure hydrogen will be obtained for each layer component. Also hydrogen-induced macroscopic film swelling as well as the increase in crystal lattice plane distances of the films will be determined by NR in order to obtain new measures for the assessment of quality of hydrogen permeation barriers.
DOI: 10.5286/isis.e.rb1810170
title: Non invasive characterization through neutron imaging of ancient Indonesian Keris from the Wallace Collection

description: The keris is the distinctive weapon of Malaysia and Indonesia. It is found in a variety of forms but, typically, it is an elongated dagger or short sword of slender proportions with a blade of rough pattern-welded texture sharpened on both edges [1].All good Southeast Asian keris are made of two sorts of metal, iron (or steel) and pamor welded together in intricate patterns and subsequently brought out on the polished surface of the blade by etching.Pamor, is the etch-resistant component traditionally used in the blades, and includes a variety of metals.In order to obtain metallurgical information about the composite structure of three keris, we plan to perform a combined analysis of neutron diffraction and neutron imaging which will provide the best combination of morphological and structural details.
DOI: 10.5286/isis.e.rb1810191
title: On the behavior of light water cross section with temperature

description: Water is the most widely used moderator in neutron sources and nuclear reactors. Despite this fact, thermalization in water is still computed with models that are based on and validated with experimental data measured decades ago. A new model predicts a reduction of the total cross section around 25 meV when the temperature is increased from room temperature. This reduction is not predicted by the existing models, and affects the calculation of temperature reactivity coefficients in nuclear reactors. This reduction has been traced to a shift in the frequency spectrum in liquid water.To test the models, a very delicate measurement of the total cross section is needed, with high statistics in the thermal and epithermal range. VESUVIO has the thermal flux intensity and a neutron spectrum that peaks at the required energy to provide high statistics for the proposed measurements.
DOI: 10.5286/isis.e.rb1810572
title: Resolving mixing.demixing effects in hydrocarbon/fluorocarbon micelles

description: Surfactants ability to lower surface tension and act as solubilising agents is critical for their wide use in everyday products. An oily hydrocarbon (HC) "tail group" attached to highly water compatible "head group", gives a molecule that forms nanoscale assemblies in solution. With fluorine atoms in the tail, the surfactants are much more effective, and for some applications these fluorocarbon (FC) surfactants are the only option.  They are, however, much more expensive, and can be more environmentally damaging, so a mixture of HC and FC surfactants could provide the best of both worlds.  Unfortunately, the behaviour of HC/FC mixtures is far from predictable.  SANS is unique in ability to highlight HC and FC surfactants individually, allowing us to work out how each contributes to the structures formed, and in future design mixed systems with minimum FC content and maximum performance
DOI: 10.5286/isis.e.rb1810580
title: Structure of oxidised phospholipid bilayers

description: Biological membranes protect cells and are essential for their survival and damaged membranes may cause serious harm to the cell.  A primary cause of damage to membranes is oxidation by radicals present in the body.  The lipids which comprise the membrane are changed by oxidation and as a result so is the membrane structure.  Insight into how lipid oxidation relates to structural changes in the membrane is an essential step to understand how membrane oxidation is related to diseases.  By creating mixed bilayers of a phospholipid and varying amounts of an oxidised lipid and determining the structure with neutron reflectivity, we aim to understand how the structure of the bilayer is changed when oxidised lipids are introduced to the bilayer.
DOI: 10.5286/isis.e.rb1810628
title: Lattice and proton vibrational dynamics in Sc-doped BaTiO3 proton conductors

description: Proton conducting BaTi1-xScxO3Hx (BTS) perovskites are promising materials for proton conducting fuel cells in the intermediate temperature regime (200-600 °C). Compared to BaZrO3-based materials, BTS undergo a phase transition between the cubic perovskite structure at high doping level, and a 6H hexagonal perovskite phase a low doping level, associated with a drop in proton conductivity. In order to link the macroscopic conductivity behavior to the proton diffusion mechanisms, we aim to characterize the lattice and proton vibrational dynamics and, subsequently, the proton local environments for both the hexagonal and cubic phases. The results will be valuable not only to understand the change in behavior with the phase transition, but in a larger view, will provide insights on the effects of acceptor-doping in proton conducting perovskites over a large composition series.
DOI: 10.5286/isis.e.rb1820004
title: The effect of heating on Gelator Solutions

description: Low molecular weight gels are formed by the self-assembly of small molecules into fibres that entangle to form a matrix. Hydrogels are an important class, as these are typically biocompatible for example. One class of gelator that can be used to form hydrogels is functionalised dipeptides. Typically, gels are formed by initially forming a solution at high pH, and then decreasing the pH. An overlooking key step is the nature of the solution at high pH. Here, a range of surfactant-like structures are formed. Critically, we have recently found that some of these solutions have an extremely unusual behaviour. If they are heated and cooled, the solutions have a vastly different viscosity and become very stringy. Not all gelators do this however, so a key question is what is the underlying reason for this. We address this in this proposal.
DOI: 10.5286/isis.e.rb1820225
title: Investigation of magnetic excitations of spin-chain oxides Sr4-xCaxMn2CoO9

description: The Sr(4-x)Ca(x)Mn2CoO9 compounds are geometrically frustrated transition metal (TM) oxide, which present a variety of interrelated magnetic behavior. The (Mn,Co) TM form a triangular lattice of spin-chain with one CoO6 trigonal prism alternating with two MnO6 octahedra along the chain . The magnetic, specific heat and powder neutron diffraction measurements show that these compounds evolve from single ion magnetism (SIM) behavior to a long range magnetic order (LRO) with Ca doping, with a persistent single chain magnetic (SCM) behavior. In addition we observed a magnetoelectric coupling (ME). The proposed INS investigation will enable us to understand the nature of magnetic ground state and details spin dynamics, which in turns will help us to understand the mechanism of ME coupling and the significant role of non-magnetic ions (Ca/Sr) on this complex magnetism.
DOI: 10.5286/isis.e.rb1820586
title: The underwater Montefortino Helmet from Capo San Vito: neutron diffraction analysis at INES beamline to determine composition and manufactur

description: The two Helmets subject of this proposal are kept in the Museo Archeologico Regionale Lilibeo - Baglio Anselmi of Marsala (Trapani, Italy). They were found in the seabed of Capo San Vito (Trapani, Italy) in an area where a Spanish galleon, guns and other finds were discovered. For this reason, the two Helmets were initially dated to the same period of the other findings (1500).The dating has been revised by some archaeologists which recognised the helmets as Montefortino type and thus dated as VI - III sec. B.C.The features of the Helmets are unusual with respect the other ancient Helmets covered by thin patinas.We propose neutron diffraction measurements on the INES beamline aiming to characterize the helmets in terms of crystalline phases quantification and copper alloy composition and microstructure.
DOI: 10.5286/isis.e.rb1870003
title: Hydrogen trapped sites in aluminum alloys studied by muon spin relaxation method

description: Hydrogen can be a main energy resource in near future.  Al-Mg-Si-Cu alloys have been used as an inner materials for a high-pressure hydrogen container. There are plenty of studies investigating hydrogen trapping sites in Al alloys, but hydrogen behavior has been still unknown, especially their kinetic properties of atomic states. For safer use of aluminum alloys in hydrogen gas/liquid tanks and other hydrogen atmosphere, we are interested in hydrogen trapped sites in aluminum alloys. For this purpose, we would like to investigate the trapping sites of hydrogen/deuterium atoms in a pure aluminum by the zero-field muon spin relaxation method to enable a study of complex commercial aluminum alloys at the next stage.
DOI: 10.15156/bio/sh1359400.08fu
title: SH1359400.08FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh1359401.08fu
title: SH1359401.08FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh2039645.08fu
title: SH2039645.08FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh2039646.08fu
title: SH2039646.08FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh1359402.08fu
title: SH1359402.08FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh1359403.08fu
title: SH1359403.08FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh2039647.08fu
title: SH2039647.08FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.