cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2220248
title: Strange metal behaviour and spin fluctuations in overdoped La2-xSrxCuO4

description: Above their transition temperature Tc, cuprate superconductors are metals. However, the conduction electrons show very anomalous behavior compared to other metals. E.g. the resistivity is proportion to temperature (T). We believe that this "strange" behavior is connected to spin fluctuations with energies comparable to T. These spin fluctuations may scatter the conduction electrons and change (scale) in a special way with T and be connected to strange T-dependence of the resistivity. We have recently identified very low-energy (~4 meV) overdamped spin fluctuations in normal state of La2-xSrxCuO4 (x=0.22) for T close to Tc. Here we propose to measure how these excitations change with T We will compare our results to theories of magnetic quantum criticality. The results will shed light on the nature of electrons which carry charge in the cuprates.
DOI: 10.21233/n3cb8x
title: Yathkyed Lake Site 4 pollen surface sample dataset

description: Raw data for the Yathkyed Lake Site 4 pollen surface sample dataset submitted to the Neotoma Paleoecology Database. Data is available through the landing page in JSON format. The landing page referenced by the DOI also contains links to publications and a map-based viewer for the dataset. The Neotoma Paleoecology Database maintains a homepage at https://www.neotomadb.org.
DOI: 10.3535/v07-z5e-6qz
title: Eruca vesicaria (L.) Cav.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/we0-06z-tgf
title: Polycarpon tetraphyllum subsp. tetraphyllum

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220287
title: Phonon confinement gap in Ln-based nanocrystals

description: The phonon density of states (PDOS), which plays an important role in the mechanisms that determine the unique physical properties of nanocrystals (NCs), strongly depends on the reduced size of the NC. While these confinement effects are often invoked to explain surprising results, the direct study of lattice dynamics in NCs is difficult. Theoretically, it is shown that as the NC size decreases, the gapless and continuous PDOS observed in the bulk becomes discrete and is characterized by a cutoff in the low-frequency part of the spectrum – the so called phonon confinement gap. Here we propose to measure the PDOS of both nanocrystalline and bulklike microcrystalline samples of photon-upconverting NaYb0.98Er0.02F4 with high resolution cold TOF neutron spectrometer LET. The data obtained will allow us to investigate the size effects on PDOS and extract the phonon confinement energy gap.
DOI: 10.5286/isis.e.rb2220287-1
title: Phonon confinement gap in Ln-based nanocrystals

description: The phonon density of states (PDOS), which plays an important role in the mechanisms that determine the unique physical properties of nanocrystals (NCs), strongly depends on the reduced size of the NC. While these confinement effects are often invoked to explain surprising results, the direct study of lattice dynamics in NCs is difficult. Theoretically, it is shown that as the NC size decreases, the gapless and continuous PDOS observed in the bulk becomes discrete and is characterized by a cutoff in the low-frequency part of the spectrum – the so called phonon confinement gap. Here we propose to measure the PDOS of both nanocrystalline and bulklike microcrystalline samples of photon-upconverting NaYb0.98Er0.02F4 with high resolution cold TOF neutron spectrometer LET. The data obtained will allow us to investigate the size effects on PDOS and extract the phonon confinement energy gap.
DOI: 10.15468/dl.ggn5vb
title: Occurrence Download

description: A dataset containing 3 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Galinsoga ciliata (Raf.) S.F.Blake",
 "Country is Latvia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 3 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109217-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.3535/0vg-6q7-hml
title: Eremogone minuartioides Dillenb. & Kadereit

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/hv0-3p3-5mb
title: Silene colorata Poir.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220266-1
title: Understanding the non-uniform Gd distribution in Rare Earth:Transition Metal ferrimagnetic alloys for spintronics applications

description: Energy efficient alternatives to conventional electronic systems are key for a sustainable future. One avenue for this is to develop devices based upon the manipulation of the magnetic spin of the electron, a field known as spintronics. Thin film spintronic systems typically utilise ferromagnetic layers, however these materials are not without problems, due to electron drift from Hall effects and often requiring large current densities to control their state. An alternative gathering interest are ferrimagnetic materials, in which two competing magnetic sublattices cancel each other at a given composition or temperature. Recent work has shown that some thin films exhibit diffusion of their constituent components, which has profound implications for devices requiring a specific compensation point. We aim to use the magnetic depth profiling only achievable with neutrons to investigate this.
DOI: 10.5286/isis.e.rb2220783
title: Investigating lipid and polymer exchange processes in protein-containing polymer-stabilised nanodiscs

description: Poly-Styrene-co-Maleic Acid Lipid Particles (SMALPs) are discoidal self-assembled nanoparticles containing a central lipid bilayer core stabilised by a radial amphipathic polymer belt, used to extract membrane proteins directly from host cell membranes complete with annular lipids. Recent studies from ourselves and others have shown that lipids and polymers within SMALPs rapidly exchange with other SMALPs in bulk solution, phospholipid monolayers, and phospholipid bilayers. Here, we propose to use neutron reflectometry, with selective deuteration and solution isotopic contrast variation to investigate the influence of encapsulated proteins and native lipids on the rates and extents of exchange processes between SMALPs and lipid bilayers at the silicon-water interface. This information will be of great benefit to capitalise on both the biotechnological and therapeutic potential of SMALPs.
DOI: 10.5286/isis.e.rb2220783-1
title: Investigating lipid and polymer exchange processes in protein-containing polymer-stabilised nanodiscs

description: Poly-Styrene-co-Maleic Acid Lipid Particles (SMALPs) are discoidal self-assembled nanoparticles containing a central lipid bilayer core stabilised by a radial amphipathic polymer belt, used to extract membrane proteins directly from host cell membranes complete with annular lipids. Recent studies from ourselves and others have shown that lipids and polymers within SMALPs rapidly exchange with other SMALPs in bulk solution, phospholipid monolayers, and phospholipid bilayers. Here, we propose to use neutron reflectometry, with selective deuteration and solution isotopic contrast variation to investigate the influence of encapsulated proteins and native lipids on the rates and extents of exchange processes between SMALPs and lipid bilayers at the silicon-water interface. This information will be of great benefit to capitalise on both the biotechnological and therapeutic potential of SMALPs.
DOI: 10.3535/c3q-2zz-lhz
title: Trifolium clusii Godr.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220188
title: Magnetic order under pressure in the unconventional superconductor UTe2

description: The discovery of superconductivity below Tsc = 1.6 K in the heavy fermion paramagnet UTe2 has attracted a lot of attention in the past three years due to the possible realization of a triplet superconducting state. Exciting experimental key features of UTe2 are the re-entrance of superconductivity under magnetic field, the presence of multiple superconducting phases as well as a pressure induced magnetically ordered phase. The study of the interplay between magnetism and superconductivity is a key point in such systems where superconductivity is believed to be mediated by magnetic fluctuations. The aim of the present proposal is to determine the nature of the magnetic ordering under pressure in UTe2.
DOI: 10.5286/isis.e.rb2220188-1
title: Magnetic order under pressure in the unconventional superconductor UTe2

description: The discovery of superconductivity below Tsc = 1.6 K in the heavy fermion paramagnet UTe2 has attracted a lot of attention in the past three years due to the possible realization of a triplet superconducting state. Exciting experimental key features of UTe2 are the re-entrance of superconductivity under magnetic field, the presence of multiple superconducting phases as well as a pressure induced magnetically ordered phase. The study of the interplay between magnetism and superconductivity is a key point in such systems where superconductivity is believed to be mediated by magnetic fluctuations. The aim of the present proposal is to determine the nature of the magnetic ordering under pressure in UTe2.
DOI: 10.5286/isis.e.rb2220266
title: Understanding the non-uniform Gd distribution in Rare Earth:Transition Metal ferrimagnetic alloys for spintronics applications

description: Energy efficient alternatives to conventional electronic systems are key for a sustainable future. One avenue for this is to develop devices based upon the manipulation of the magnetic spin of the electron, a field known as spintronics. Thin film spintronic systems typically utilise ferromagnetic layers, however these materials are not without problems, due to electron drift from Hall effects and often requiring large current densities to control their state. An alternative gathering interest are ferrimagnetic materials, in which two competing magnetic sublattices cancel each other at a given composition or temperature. Recent work has shown that some thin films exhibit diffusion of their constituent components, which has profound implications for devices requiring a specific compensation point. We aim to use the magnetic depth profiling only achievable with neutrons to investigate this.
DOI: 10.3535/1mx-zgv-kzc
title: Aposeris foetida (L.) Less.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/s8r-2za-p2k
title: Hypecoum imberbe Sm.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220035
title: Reversed micelles in an "iso-density" solvent landscape: Pressure-Temperature studies

description: For micelles, can the solvent be treated as a benign medium, described by its density, or is it necessary to consider explicitly the solvent chemical identity and structure? The unique aspect of this proposal is the use of specialized sample environment, a temperature-pressure (T-P) cell, loaned from ILL as pre-agreed with ISIS and ILL instrument scientists. Using this cell, it will be uniquely possible to control thermodynamic conditions to achieve “iso-density” solvents (see Figures 1 and 3), and hence explore a previously inaccessible solvent landscape.
DOI: 10.5286/isis.e.rb2220035-1
title: Reversed micelles in an "iso-density" solvent landscape: Pressure-Temperature studies

description: For micelles, can the solvent be treated as a benign medium, described by its density, or is it necessary to consider explicitly the solvent chemical identity and structure? The unique aspect of this proposal is the use of specialized sample environment, a temperature-pressure (T-P) cell, loaned from ILL as pre-agreed with ISIS and ILL instrument scientists. Using this cell, it will be uniquely possible to control thermodynamic conditions to achieve “iso-density” solvents (see Figures 1 and 3), and hence explore a previously inaccessible solvent landscape.
DOI: 10.3535/178-kjb-xem
title: Poterium sanguisorba subsp. sanguisorba

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/vq4-wzf-ger
title: Fumaria vaillantii Loisel.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220352
title: Correlating SANS and SESANS to study membrane and morphology changes in Bacteria

description: Bacteria are a huge problem due to the advent of antibiotic resistance, modern health interventions rely on using antibiotics to enable many everyday hospital operations and even dialysis. In order to kill bacteria with greater efficacy we need to better understand the structures that bacteria have developed to protect them from their environment. To do this requires us to study the bacteria outer cell walls that provide them with such amazing stability. The AFM work shown in this proposal challenges the conventional paradigm and shows how much like a cross linked hydrogel the outer cell wall is. Using SANS and SESANS we plan to study large numbers of genetically identical bacteria cell to quantify how antibiotics affect the size and shape of bacteria, which may open the way to a new way of testing the effectiveness of killing bacterial pathogens.
DOI: 10.5286/isis.e.rb2220352-1
title: Correlating SANS and SESANS to study membrane and morphology changes in Bacteria

description: Bacteria are a huge problem due to the advent of antibiotic resistance, modern health interventions rely on using antibiotics to enable many everyday hospital operations and even dialysis. In order to kill bacteria with greater efficacy we need to better understand the structures that bacteria have developed to protect them from their environment. To do this requires us to study the bacteria outer cell walls that provide them with such amazing stability. The AFM work shown in this proposal challenges the conventional paradigm and shows how much like a cross linked hydrogel the outer cell wall is. Using SANS and SESANS we plan to study large numbers of genetically identical bacteria cell to quantify how antibiotics affect the size and shape of bacteria, which may open the way to a new way of testing the effectiveness of killing bacterial pathogens.
DOI: 10.5286/isis.e.rb2220358-1
title: In-situ simultaneous SANS and diffraction measurements to unravel controlling mechanisms of delayed phase separation in stainless steels

description: Duplex stainless steels, containing approximately equal amounts of two different phases (ferrite and austenite) are used in various demanding industries that require excellent corrosion and mechanical properties such as nuclear or gas industry. However, they are prone to embrittlement when exposed to elevated temperatures for a prolonged time, which limits the applications and the lifetime of components. This is linked with so-called phase separation that occurs in ferrite. It has been observed that this embrittlement can be delayed by different heat treatments, but the mechanisms that lie behind this delay are still unknown. By analysis of the phase separation in-situ (while performing the different heat treatments), we can separate different potential mechanisms for this delay and increase our understanding, which will help us to control phase separation in the future.
DOI: 10.3535/3j8-zpq-wez
title: Erucaria hispanica (L.) Druce

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220206
title: Hydrogen induced magnetic structure changes in NdGaDx

description: Renewable technologies are essential for a sustainable future. Materials with applications in hydrogen storage and/or with magnetic properties are desirable for green energy applications. NdGa is a compound that can both absorb large quantities of hydrogen and has magnetic properties at cryogenic temperatures. The structural impact upon absorbing hydrogen in NdGa is substantial with two hydrogen positions that absorbing in sequence, and there are weak extra features that indicate formation of a superstructure in the full hydride phase. The hydrogen also impacts the magnetism, where the magnetic behavior drastically changes with the hydrogen content. This proposal aims at studying the hydrogen positions in the full hydride and a monohydride to reveal preference in the absorbing properties, as well as their corresponding magnetic structures.
DOI: 10.5286/isis.e.rb2220206-1
title: Hydrogen induced magnetic structure changes in NdGaDx

description: Renewable technologies are essential for a sustainable future. Materials with applications in hydrogen storage and/or with magnetic properties are desirable for green energy applications. NdGa is a compound that can both absorb large quantities of hydrogen and has magnetic properties at cryogenic temperatures. The structural impact upon absorbing hydrogen in NdGa is substantial with two hydrogen positions that absorbing in sequence, and there are weak extra features that indicate formation of a superstructure in the full hydride phase. The hydrogen also impacts the magnetism, where the magnetic behavior drastically changes with the hydrogen content. This proposal aims at studying the hydrogen positions in the full hydride and a monohydride to reveal preference in the absorbing properties, as well as their corresponding magnetic structures.
DOI: 10.5286/isis.e.rb2220358
title: In-situ simultaneous SANS and diffraction measurements to unravel controlling mechanisms of delayed phase separation in stainless steels

description: Duplex stainless steels, containing approximately equal amounts of two different phases (ferrite and austenite) are used in various demanding industries that require excellent corrosion and mechanical properties such as nuclear or gas industry. However, they are prone to embrittlement when exposed to elevated temperatures for a prolonged time, which limits the applications and the lifetime of components. This is linked with so-called phase separation that occurs in ferrite. It has been observed that this embrittlement can be delayed by different heat treatments, but the mechanisms that lie behind this delay are still unknown. By analysis of the phase separation in-situ (while performing the different heat treatments), we can separate different potential mechanisms for this delay and increase our understanding, which will help us to control phase separation in the future.
DOI: 10.3535/7yk-l58-pkh
title: Bifora testiculata (L.) Roth

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/ahm-9h4-9zn
title: Linaria chalepensis (L.) Mill.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220299
title: Structure of induced currents in equilibrium superconducting states.

description: The proposed project is aimed at studying the structure of field-induced currents in the Meissner state (the primary objective) as well as in the mixed and filamentary equilibrium states of a type-II superconductor using a small-angle neutron scattering technique. As follows from a novel so-called micro-whirls model, the Meissner phase is filled with induced microscopic currents, which form a network of hexagonally ordered whirls parallel to the field H. We expect that the project will allow us to detect the structure of the induced currents and to measure the radius of the whirls and the London penetration depth. If successful, the project will open a new page in studies of superconductivity, in particular it will pave a way to measure microscopic parameters of superconductors, which are necessary for understanding of specifics of Cooper pairing in all superconducting materials.
DOI: 10.5286/isis.e.rb2220299-1
title: Structure of induced currents in equilibrium superconducting states.

description: The proposed project is aimed at studying the structure of field-induced currents in the Meissner state (the primary objective) as well as in the mixed and filamentary equilibrium states of a type-II superconductor using a small-angle neutron scattering technique. As follows from a novel so-called micro-whirls model, the Meissner phase is filled with induced microscopic currents, which form a network of hexagonally ordered whirls parallel to the field H. We expect that the project will allow us to detect the structure of the induced currents and to measure the radius of the whirls and the London penetration depth. If successful, the project will open a new page in studies of superconductivity, in particular it will pave a way to measure microscopic parameters of superconductors, which are necessary for understanding of specifics of Cooper pairing in all superconducting materials.
DOI: 10.5286/isis.e.rb2220602-1
title: Bimetalllic weapons of Iron Age northwestern Iran

description: In consequence of a recent trafficking operation stopped by the Border Force in the UK a large number of metal objects from northwestern Iran became available for study, the majority of which can be dated stylistically to Iron Age I and II (ca. 1250-800 BC). Before they are repatriated, a PhD research will be conducted at Cranfield University, jointly funded by ISIS. It will examine the Bronze Age to Iron Age transition in Iran, focusing on the complex metallurgical techniques. Among the objects are multiple examples of bimetallic weapons, cast in bronze with an iron rod that can be seen through the pommel. We propose to investigate how the swords were assembled using neutron imaging, which will allow us to understand the function of the iron element and whether it continues into the blade. Such weapons are an important link between bronze weapons and their later iron counterparts.
DOI: 10.3535/5tl-z2c-xt9
title: Bromus commutatus subsp. decipiens (Bomble & H.Scholz) H.Scholz

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/bae-38s-399
title: Vicia orientalis (Boiss.) Bég. & Diratz.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2200029
title: Associative behaviour of novel polymeric graft copolymers in aqueous solution

description: Amphiphilic graft copolymers (AGCs) have been studied for their complex and fascinating chemical properties. Potential applications have been identified as wetting agents, foaming agents, drug carriers as well as additives for Enhanced Oil Recovery (EOR).The AGCs of interest are shown in Figure 1: the preliminary Small-angle neutron scattering (Figure 2) has been used to characterize the conformation these graft copolymers adopt in selective solvents (e.g. Water) with possible formation of a core-shell structure. Analyses of tensiometric data (Figure 2) indicate that higher grafting numbers promote a surface tension reduction. We propose to investigate the structure of the AGC in a selective solvent for the grafted chains, as well as the effect of altering the ratio of backbone to graft chains by varying the molecular weight of the chains.