cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb1920238-2
title: Identifying fractionalized magnetic excitations in the triangular spin-liquid candidate Na2BaCo(PO4)2

description: The experimental identification of quantum spin liquids (QSL) in real materials has been one of the challenging and fundamental goals in condensed matter physics. The newly discovered QSL candidate material Na2BaCo(PO4)2 forms triangular layers of Co2+ (jeff = 1/2) ions stacked along c-axis. Our preliminary experimental results give no hint for magnetic and structural phase transitions down to 50 mK. In addition, the large magnetic entropy points towards the presence of abundant low-lying magnetic excitations at low temperatures. Putting these together, Na2BaCo(PO4)2 is an attracting platform to explore the QSL in the triangular lattice. The proposed inelastic neutron scattering studies will critically test a QSL scenario by probing low-lying magnetic excitations as a function of temperature and magnetic field and thus determining spin-spin correlations.
DOI: 10.5286/isis.e.rb1920540-2
title: Phase transitions in Sr-doped multiferroic bismuth ferrite

description: Bismuth ferrite, BiFeO3, is a much-studied ceramic showing both dielectric and magnetic ordering at relatively high temperatures. In order to improve its properties there has been much interest in doping BiFeO3, but rarely has there been structural characterisation of these materials. We have shown that it is possible to replace bismuth ions by strontium together with oxygen vacancies. Increasing composition of strontium lowers the transition temperatures so that the high-symmetry cubic phase becomes stable at room temperature, but with remaining antiferromagnet and ferromagnetic order. We will use high-resolution powder diffraction to study the ferroelectric phase transitions as a function of temperature in samples of different Sr-content.
DOI: 10.5286/isis.e.rb2000039
title: Using Neutron Resonance Imaging to Spatially Resolve the Strontium Distribution in LSCO Superconductor

description: Superconducting LSCO samples have shown broad transition temperature ranges, which is suspected to be caused by inhomogeneous strontium doping of the sample. Through the use of neutron resonance imaging we can spatially resolve the strontium and lanthanum concentrations in the sample, and directly see how it correlates with the spatial distribution of transition temperature. The information obtained will aid in the characterisation and production of high quality superconductors, such that the effect of inhomogeneous doping can be separated from other effects that need to be investigated.
DOI: 10.5286/isis.e.rb2000039-1
title: Using Neutron Resonance Imaging to Spatially Resolve the Strontium Distribution in LSCO Superconductor

description: Superconducting LSCO samples have shown broad transition temperature ranges, which is suspected to be caused by inhomogeneous strontium doping of the sample. Through the use of neutron resonance imaging we can spatially resolve the strontium and lanthanum concentrations in the sample, and directly see how it correlates with the spatial distribution of transition temperature. The information obtained will aid in the characterisation and production of high quality superconductors, such that the effect of inhomogeneous doping can be separated from other effects that need to be investigated.
DOI: 10.5286/isis.e.rb2000106
title: EASii IC - Neutrons tests en electronic devices

description: Request for neutrons tests on electronic devices during W50
DOI: 10.21421/d2/tccvs7
title: Phenotypic evaluation data of International Chickpea Varietal Trials (ICVTs) – Desi for Year 2016-17

description: This dataset contains the phenotypic data on chickpea - Desi improvement at ICRISAT. Chickpea breeding program of ICRISAT supplied samples of breeding materials, which included advanced breeding lines, varieties, segregating populations, marker-assisted backcross lines, near-isogenic lines and other genotypes for evaluation by partners during 2016-17. Twenty entries with a local check were evaluated in two replication following RCBD design, the entries evaluated were uniform across the location except for local checks. The phenotypic evaluation data was received from all locations and were analyzed individually. Scientists can select entries for further evaluation and use them in the breeding programs based on the phenotypic performance at respective locations.
DOI: 10.5281/zenodo.3570976
title: Crystal structure of the coild-coil oligomerisation domain of the transcription factor PHOSPHATE STARVATION RESPONSE 1 (PHR1) from Arabidopsis - native dataset form 2

description: the gzipped tar archive contains the raw diffraction images (Swiss Light Source beamline PXIII, Pilatus 2M-F detector), the data processing directory (xds_nat1) and the scaled and converted structure factors (xdsconv_nat1)
DOI: 10.5281/zenodo.3570977
title: Crystal structure of the coild-coil oligomerisation domain of the transcription factor PHOSPHATE STARVATION RESPONSE 1 (PHR1) from Arabidopsis - native dataset form 2

description: the gzipped tar archive contains the raw diffraction images (Swiss Light Source beamline PXIII, Pilatus 2M-F detector), the data processing directory (xds_nat1) and the scaled and converted structure factors (xdsconv_nat1)
DOI: 10.5286/isis.e.rb1910631-2
title: Inelastic neutron scattering study on the one dimensional spin-chains

description: One-dimensional (1D) spin chain is interesting to understand the low dimensional magnetism. For a 1D spin chain, long rang magnetic order cannot exists at finite temperature. On the other hand, the coupling between spin chains may govern the magnetic order although it is in general much weaker than intra-chain couplings. We had been given two days of beam time on MERLIN (RB1820213) to investigate magnetic excitations in Ba3CrS5 and Ba3CrSe5. Due to interesting dispersive excitations observed between 5 K and 300 K in Ba3CrS5 we spent two days of time on MERLIN for measuring temperature dependence of the excitations in Ba3CrS5. Here we propose to investigate magnetic excitations in Ba3CrSe5 using MERLIN and low energy excitations on OSIRIS to estimate the spin gap in Ba3CrS5 and Ba3CrSe5 to complete the study and obtain full understanding of the low-D magnetism of these compounds.
DOI: 10.5286/isis.e.rb1920596
title: The chemisorption of hydrogen over a Raney cobalt catalyst: An INS investigation

description: Building on a successful programme investigating aspects of iron based Fischer-Tropsch synthesis (FTS) catalysts, it is opportune to extend that work to include Co FTS catalysts; the latter finding wide application in modern FTS unit operations. Surprisingly there is a paucity of vibrational studies focusing on hydrogen chemisorption over Co surfaces; a scenario that is frustrating catalyst development strategies for Co based catalysts. A recent MAPS study (RB1820373) revealed complications in activating a Raney Co reference catalyst. Following that study, this proposal seeks to exploit that awareness to use MAPS to obtain the vibrational spectrum of hydrogen over a commercial grade Raney Co catalyst. This will provide fundamental knowledge of considerable impact to sections of the heterogeneous catalysis community.
DOI: 10.5286/isis.e.rb1920596-1
title: The chemisorption of hydrogen over a Raney cobalt catalyst: An INS investigation

description: Building on a successful programme investigating aspects of iron based Fischer-Tropsch synthesis (FTS) catalysts, it is opportune to extend that work to include Co FTS catalysts; the latter finding wide application in modern FTS unit operations. Surprisingly there is a paucity of vibrational studies focusing on hydrogen chemisorption over Co surfaces; a scenario that is frustrating catalyst development strategies for Co based catalysts. A recent MAPS study (RB1820373) revealed complications in activating a Raney Co reference catalyst. Following that study, this proposal seeks to exploit that awareness to use MAPS to obtain the vibrational spectrum of hydrogen over a commercial grade Raney Co catalyst. This will provide fundamental knowledge of considerable impact to sections of the heterogeneous catalysis community.
DOI: 10.5286/isis.e.rb2000105
title: Amorphous content of alpha alumina

description: Powder diffraction offers an accessible and accurate method to determine the phase abundance in crystalline mixtures. Unfortunately, only the crystalline components of the mixture are directly assessed. In any finely divided solid, due to relaxation and unsatisfied bonds there will exist at least a disordered surface layer that can amount to several percent of the total mass; additional amorphous material may be present. The improved accuracy of the Rietveld method for data analysis has allowed the determination of the non-crystalline component via "spiking" methods using a reference material with known amorphous content. Thus, the US National Institute for Standards and Technology (NIST) seeks to certify the alumina Standard Reference Material (SRM 676b) specific to quantitative analysis with respect to amorphous content and this is the aim of the proposed experiment.
DOI: 10.5286/isis.e.rb2000105-1
title: Amorphous content of alpha alumina

description: Powder diffraction offers an accessible and accurate method to determine the phase abundance in crystalline mixtures. Unfortunately, only the crystalline components of the mixture are directly assessed. In any finely divided solid, due to relaxation and unsatisfied bonds there will exist at least a disordered surface layer that can amount to several percent of the total mass; additional amorphous material may be present. The improved accuracy of the Rietveld method for data analysis has allowed the determination of the non-crystalline component via "spiking" methods using a reference material with known amorphous content. Thus, the US National Institute for Standards and Technology (NIST) seeks to certify the alumina Standard Reference Material (SRM 676b) specific to quantitative analysis with respect to amorphous content and this is the aim of the proposed experiment.
DOI: 10.5286/isis.e.rb2000106-1
title: EASii IC - Neutrons tests en electronic devices

description: Request for neutrons tests on electronic devices during W50
DOI: 10.17632/htg4vdkmvv.4
title: Tetrahydrobenzimidazole TMQ0153 triggers apoptosis, autophagy and necroptosis crosstalk in chronic myeloid leukemia- Part 2 (Figure2, 3, 4, Supple 7,8))

description: Abstract Chronic myeloid leukemia (CML) results from a t(9;22) (q34; q11) translocation, also called Philadelphia chromosome (Ph). This reciprocal translocation causes a constitutively-activated tyrosine kinase BCR-ABL fusion gene. By comparing imatinib-sensitive and -resistant CML cell models, we investigated the molecular mechanisms by which tetrahydrobenzimidazole derivative TMQ0153 triggered caspase-dependent apoptosis at low concentrations accompanied by loss of mitochondrial membrane potential (MMP) and increase of cytosolic free Ca2+ levels. Interestingly, at higher concentrations, TMQ0153 induced necroptotic cell death with accumulation of ROS, both preventable by N-acetyl-L-cysteine (NAC) pretreatment. At necroptosis-inducing concentrations, we observed increased ROS and decreased ATP and GSH levels, concomitant with protective autophagy induction. Inhibitors such as bafilomycin A1 (baf-A1) and siRNA against beclin 1 abrogated autophagy, sensitized CML cells against TMQ0153 and enhanced necroptotic cell death. Importantly, TMQ153-induced necrosis led to cell surface exposure of calreticulin (CRT) and ERp57 as well as the release of extracellular ATP and high mobility group box (HMGB1) demonstrating the immunological cell death markers by TMQ0153. We validated the anti-cancer potential of TMQ0153 by in vivo inhibition of K562 microtumor formation in zebrafish. Taken together, our findings provide evidence that cellular stress and redox modulation by TMQ0153 concentration-dependently leads to different cell death modalities including controlled necrosis in CML cell models. Conclusion: Our findings indicate that TMQ0153-induced ROS act as a rheostat determining the onset of apoptotic- or autophagy-related controlled necrotic cell death in CML.
DOI: 10.5286/isis.e.rb1910504-3
title: The full spin-wave dispersion of CaFe2O4 in the A and B phases:

description: CaFe2O4 shows an interplay between magnetic structures termed the A and B phases. In this proposal, we request time to measure the spin wave dispersion using MERLIN. Previous measurements did not obtain adequate data around the zone boundary to resolve further neighbour interactions. We propose to perform a complete reciprocal space mapping in both the A and B phases and compare them with theory developed by our group.
DOI: 10.5286/isis.e.rb1920629-2
title: Neutron diffraction study of A-site deficient hydrated Perovskites

description: Transition metal ions can be easily introduced in the B-site of perovskites with general formula ABO3 and exsolved on their surfaces upon reduction, to enhance the catalytic properties in energy applications such as solid oxide cells. Based on the stoichiometries we explored so far, we have good experimental evidence to believe that Ni2+ ions could also be substituted on the A-site of hydrated CaTiO3 and then exsolved upon reduction. Formation of unusual non-stoichiometries with a large proportion of A-site deficiency would be associated with the incorporation of hydroxyl ions in the perovskite structure, and the hydration enhanced proton conductivity. Neutron diffraction study will deepen our understanding of the substitution mechanisms and indeed the indications of protonic conduction allowing for a better design and tailoring of new catalysts and energy materials.
DOI: 10.5286/isis.e.rb1920752
title: Ca-ions at PS-containing biomimetic lipid layers: Interfacial water

description: Lipid membranes provide a sensitive platform for a variety of biological functions, and membrane lipid distributions are carefully regulated. In this project we plan to study the interaction of Ca2+- ions with model lipid monolayers that contain a mixture of zwitterionic phosphatidylcholine (PC) and anionic phosphatidylserine (PS) such that basic Ca2+-based processes as e.g. relevant in cell signalling as during apoptosis can be accessed. The conjecture of an accumulation of Ca2+-ions into the headgroup interface of a PS-containing monolayer and the resulting changes in the headgroup hydration / interfacially associated water shall be confirmed by use of neutron reflectometry.
DOI: 10.5286/isis.e.rb1920752-1
title: Ca-ions at PS-containing biomimetic lipid layers: Interfacial water

description: Lipid membranes provide a sensitive platform for a variety of biological functions, and membrane lipid distributions are carefully regulated. In this project we plan to study the interaction of Ca2+- ions with model lipid monolayers that contain a mixture of zwitterionic phosphatidylcholine (PC) and anionic phosphatidylserine (PS) such that basic Ca2+-based processes as e.g. relevant in cell signalling as during apoptosis can be accessed. The conjecture of an accumulation of Ca2+-ions into the headgroup interface of a PS-containing monolayer and the resulting changes in the headgroup hydration / interfacially associated water shall be confirmed by use of neutron reflectometry.
DOI: 10.5286/isis.e.rb2000111
title: When like-charged ions attract: How OH-defects influence the size and distribution of cationic clusters in ionic liquids

description: This study will probe the liquid nanostructures of mixtures of two ionic liquids, 4-(hydroxybutyl)pyridinium-bis(trifluorosulfonyl)-imide ([HOC4Py]NTf2) and pentylpyridinium-bis(trifluorosulfonyl)imide ([C5Py]NTf2), which are identical except that the alkyl chain of the former is terminated by OH and the latter by CH3. Hence, ion clustering is expected in [HOC4Py]NTf2 but not in [C5Py]NTf2, which will reveal the effect of the alcohol H-bonding unambiguously. We will determine how the defects of OH groups in the H-bond network will influence the cluster distribution and the most probable cluster structures. Furthermore, we will figure out how big the anion excess has to be to break down the bigger cation-cation-based aggregates into cation-anion monomers.
DOI: 10.5286/isis.e.rb2000111-1
title: When like-charged ions attract: How OH-defects influence the size and distribution of cationic clusters in ionic liquids

description: This study will probe the liquid nanostructures of mixtures of two ionic liquids, 4-(hydroxybutyl)pyridinium-bis(trifluorosulfonyl)-imide ([HOC4Py]NTf2) and pentylpyridinium-bis(trifluorosulfonyl)imide ([C5Py]NTf2), which are identical except that the alkyl chain of the former is terminated by OH and the latter by CH3. Hence, ion clustering is expected in [HOC4Py]NTf2 but not in [C5Py]NTf2, which will reveal the effect of the alcohol H-bonding unambiguously. We will determine how the defects of OH groups in the H-bond network will influence the cluster distribution and the most probable cluster structures. Furthermore, we will figure out how big the anion excess has to be to break down the bigger cation-cation-based aggregates into cation-anion monomers.
DOI: 10.5286/isis.e.rb2000113
title: Understanding Radiation-induced Effects in State-of-the-Art Embedded Processors

description: The susceptibility of electronic devices to atmospheric radiation is no longer just of concern to the aerospace industry. At sea level, a 100,000-device deployment can expect to experience a radiation-induced failure once every few hours. System reliability is thus of ever-increasing concern, particularly in safety-critical scenarios including in the automotive and health sectors, wherein the use of performance-demanding machine learning applications is increasingly desired. We wish to increase our knowledge of radiation-induced effects in modern electronic devices, particularly embedded CPUs, and gauge the effectiveness of techniques designed to increase their reliability.
DOI: 10.5286/isis.e.rb2000113-1
title: Understanding Radiation-induced Effects in State-of-the-Art Embedded Processors

description: The susceptibility of electronic devices to atmospheric radiation is no longer just of concern to the aerospace industry. At sea level, a 100,000-device deployment can expect to experience a radiation-induced failure once every few hours. System reliability is thus of ever-increasing concern, particularly in safety-critical scenarios including in the automotive and health sectors, wherein the use of performance-demanding machine learning applications is increasingly desired. We wish to increase our knowledge of radiation-induced effects in modern electronic devices, particularly embedded CPUs, and gauge the effectiveness of techniques designed to increase their reliability.
DOI: 10.17632/7thk5fhysn.6
title: Tetrahydrobenzimidazole TMQ0153 triggers apoptosis, autophagy and necroptosis crosstalk in chronic myeloid leukemia (Part 3 Figure 5-9, Supple 1-12))

description: Abstract Chronic myeloid leukemia (CML) results from a t(9;22) (q34; q11) translocation, also called Philadelphia chromosome (Ph). This reciprocal translocation causes a constitutively-activated tyrosine kinase BCR-ABL fusion gene. By comparing imatinib-sensitive and -resistant CML cell models, we investigated the molecular mechanisms by which tetrahydrobenzimidazole derivative TMQ0153 triggered caspase-dependent apoptosis at low concentrations accompanied by loss of mitochondrial membrane potential (MMP) and increase of cytosolic free Ca2+ levels. Interestingly, at higher concentrations, TMQ0153 induced necroptotic cell death with accumulation of ROS, both preventable by N-acetyl-L-cysteine (NAC) pretreatment. At necroptosis-inducing concentrations, we observed increased ROS and decreased ATP and GSH levels, concomitant with protective autophagy induction. Inhibitors such as bafilomycin A1 (baf-A1) and siRNA against beclin 1 abrogated autophagy, sensitized CML cells against TMQ0153 and enhanced necroptotic cell death. Importantly, TMQ153-induced necrosis led to cell surface exposure of calreticulin (CRT) and ERp57 as well as the release of extracellular ATP and high mobility group box (HMGB1) demonstrating the immunological cell death markers by TMQ0153. We validated the anti-cancer potential of TMQ0153 by in vivo inhibition of K562 microtumor formation in zebrafish. Taken together, our findings provide evidence that cellular stress and redox modulation by TMQ0153 concentration-dependently leads to different cell death modalities including controlled necrosis in CML cell models.
DOI: 10.24378/exe.2144
title: Data supporting Bailey et al. (2020) Data in Brief

description: Complete set of data supporting the paper by Bailey et al. (2020) "Brillouin microspectroscopy data of tissue-mimicking gelatin hydrogels acquired with a dual-stage VIPA spectrometer", Data in Brief.
description: The article associated with this dataset is located in ORE at: http://hdl.handle.net/10871/40796
DOI: 10.5281/zenodo.3570712
title: Gene Ontology Data Reference

description: Referential manifest of GO data releases.
description: {"references": ["Ashburner et al. Gene ontology: tool for the unification of biology (2000) Nat Genet 25(1):25-9. Online at Nature Genetics.", "GO Consortium, Nucleic Acids Res., 2017"]}
DOI: 10.5286/isis.e.rb1920139
title: Structure of lipid monolayers following oxidative damage

description: Lipids form the major component of cell membranes, which separate the contents of the cell from the external environment. The oxidation of lipids within biological membranes is implicated in a range of diseases and health effects including cancer and ageing. In this proposal we wish to examine how oxidation of specific lipids changes the structure of lipid membranes. Specifically we prepare lipid monolayers at the air-water interface containing different amounts of deuterium labeled oxidized lipids. Neutron reflection, combined with different contrasts, will be used to interrogate the lipid layers and determine the orientation and positioning of the oxidized lipids within the layer. The results will provide an enhanced understanding of how oxidative damages changes the properties of cell membranes.
DOI: 10.5286/isis.e.rb1920139-1
title: Structure of lipid monolayers following oxidative damage

description: Lipids form the major component of cell membranes, which separate the contents of the cell from the external environment. The oxidation of lipids within biological membranes is implicated in a range of diseases and health effects including cancer and ageing. In this proposal we wish to examine how oxidation of specific lipids changes the structure of lipid membranes. Specifically we prepare lipid monolayers at the air-water interface containing different amounts of deuterium labeled oxidized lipids. Neutron reflection, combined with different contrasts, will be used to interrogate the lipid layers and determine the orientation and positioning of the oxidized lipids within the layer. The results will provide an enhanced understanding of how oxidative damages changes the properties of cell membranes.
DOI: 10.5286/isis.e.rb1920511
title: Magnetic proximity in Semiconductor- Superconductor -Ferromagnetic epitaxial tri-crystals

description: Topological materials hold promise in quantum information processing as a fault tolerant basis for operations and manipulations of quasiparticles that exist at the material boundaries.An important class of topological states are the so-called Majorana bound states (MBS), which are predicted to exist at the ends of one-dimensional p-wave superconductors.To reach the topological phase, an external magnetic field is used to lift the spin degeneracy in these SE-SU systems, which brings even a larger challenge for realizing scalable quantum-computing platforms. Therefore, it is of interest to integrate materials that are intrinsically topological, ideally without the need for external applied fields. Polarized neutron reflectometry (PNR) is a powerful technique able to provide structural information which will open a new field in the pursue for topological superconducting materials.