cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2310706
title: Segmental relaxation in linear vs circular polymers

description: Cyclic polymers lack free end groups and generally possess lower viscosities, higher glass transition temperatures (Tg’s), greater thermal stability and faster crystallization rates than comparable linear polymers. Until the early 2010’s, there was limited interest in this field because of difficulties in making cyclic polymers with negligible linear impurities. However, synthetic approaches have evolved drastically with the introduction of new techniques, catalysts and methods. This has led to an uptake of interest in cyclic polymer properties and potential applications. This experiment focused on characterising the segmental relaxation of high and low molecular weight linear and cyclic polymers via quasielastic neutron scattering.
DOI: 10.5286/isis.e.rb2310706-1
title: Segmental relaxation in linear vs circular polymers

description: Cyclic polymers lack free end groups and generally possess lower viscosities, higher glass transition temperatures (Tg’s), greater thermal stability and faster crystallization rates than comparable linear polymers. Until the early 2010’s, there was limited interest in this field because of difficulties in making cyclic polymers with negligible linear impurities. However, synthetic approaches have evolved drastically with the introduction of new techniques, catalysts and methods. This has led to an uptake of interest in cyclic polymer properties and potential applications. This experiment focused on characterising the segmental relaxation of high and low molecular weight linear and cyclic polymers via quasielastic neutron scattering.
DOI: 10.5286/isis.e.rb2320159-1
title: Probing the liquid-liquid transition in tellurium under pressure

description: Liquid tellurium (Te) exhibits several thermodynamic anomalies which closely resemble those of water. These anomalies point to the possible existence of a liquid-liquid critical point (LLCP) in Te, which is similar to the one purported in water. Compared with water, however, the ability of Te to reach deep supercooling without crystallisation makes it possible to explore its phase diagram close to the LLCP. Therefore, we propose to study the thermodynamics and structure of supercooled liquid Te under pressure using the NIMROD instrument, aiming at revealing details of the phase diagram associated with the LLCP.
DOI: 10.3535/rzr-nlw-0gf
title: Ulmus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/y2z-11f-h6p
title: Festuca heterophylla Lam.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2320159
title: Probing the liquid-liquid transition in tellurium under pressure

description: Liquid tellurium (Te) exhibits several thermodynamic anomalies which closely resemble those of water. These anomalies point to the possible existence of a liquid-liquid critical point (LLCP) in Te, which is similar to the one purported in water. Compared with water, however, the ability of Te to reach deep supercooling without crystallisation makes it possible to explore its phase diagram close to the LLCP. Therefore, we propose to study the thermodynamics and structure of supercooled liquid Te under pressure using the NIMROD instrument, aiming at revealing details of the phase diagram associated with the LLCP.
DOI: 10.5286/isis.e.rb2490046
title: Residual Stress measurements in Laser Shock Peened Additive Manufactured Inconel Alloy by Neutron Diffraction
DOI: 10.5286/isis.e.rb2490046-1
title: Residual Stress measurements in Laser Shock Peened Additive Manufactured Inconel Alloy by Neutron Diffraction
DOI: 10.34816/ifao.archives.232686
title: SAQQARA_pv_2004_00725

description: Référence : pv_2004_00725<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/6wc-wa1-15e
title: Ranunculus cassubicus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/a2g-cdj-9mr
title: Orchidaceae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220548
title: Residual Stress Characterisation of Laser Shock Peening Process for Improved Material Performance in Space Applications
DOI: 10.5286/isis.e.rb2220548-1
title: Residual Stress Characterisation of Laser Shock Peening Process for Improved Material Performance in Space Applications
DOI: 10.5286/isis.e.rb2310306-1
title: INS STUDY OF 5-HYDROXYMETHYL FURFURAL (HMF) ON A BIOCHAR CATALYST - TOSCA

description: The oxidation of 5-hydroxymethyl furfural (HMF) can lead to the production of poly(ethylene 2,5-furandicarboxylate) (PEF) – a polymer that could replace the petroleum based polyethylene terephthalate (PET). PEF can be synthesised by copolymerisation of 2,5-furan dicarboxylic acid (FDCA) with ethylene glycol. In Warwick an iron-containing MOF was used for HMF oxidation and found to catalyse the reaction under very mild conditions by use of an organic peroxide and radical mediator co-catalyst. Although the MOF catalyst is surprisingly robust and can be recycled, we have extended this work to more readily available catalysts and have found that biochar (BCR), produced from palm oil empty fruit bunch which naturally contains a small amount of Fe, provides similar catalytic efficiency to the MOF catalyst, giving good yield of FDCA, and recyclability. To this end, we wish to use INS to study the details of the interaction of HMF and the co-catalyst TEMPO with the MOF and BCR. The comparison will aid the mechanistic understanding of both materials and point towards opportunities for improvement e.g. incorporation of acid functionality in the MOF or increasing the Fe content of the BCR.
DOI: 10.3535/d64-5vq-trn
title: Digitaria violascens Link

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/npm-af0-8bm
title: Silphiodaucus prutenicus subsp. prutenicus

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310306
title: INS STUDY OF 5-HYDROXYMETHYL FURFURAL (HMF) ON A BIOCHAR CATALYST - TOSCA

description: The oxidation of 5-hydroxymethyl furfural (HMF) can lead to the production of poly(ethylene 2,5-furandicarboxylate) (PEF) – a polymer that could replace the petroleum based polyethylene terephthalate (PET). PEF can be synthesised by copolymerisation of 2,5-furan dicarboxylic acid (FDCA) with ethylene glycol. In Warwick an iron-containing MOF was used for HMF oxidation and found to catalyse the reaction under very mild conditions by use of an organic peroxide and radical mediator co-catalyst. Although the MOF catalyst is surprisingly robust and can be recycled, we have extended this work to more readily available catalysts and have found that biochar (BCR), produced from palm oil empty fruit bunch which naturally contains a small amount of Fe, provides similar catalytic efficiency to the MOF catalyst, giving good yield of FDCA, and recyclability. To this end, we wish to use INS to study the details of the interaction of HMF and the co-catalyst TEMPO with the MOF and BCR. The comparison will aid the mechanistic understanding of both materials and point towards opportunities for improvement e.g. incorporation of acid functionality in the MOF or increasing the Fe content of the BCR.
DOI: 10.5286/isis.e.rb2490061-1
title: Symmetry confirmation of Li2SrNb2O7 at ambient and low temperature
DOI: 10.34816/ifao.archives.232687
title: SAQQARA_pv_2004_00726

description: Référence : pv_2004_00726<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/zfc-f4h-tgz
title: Eragrostis ferruginea (Thunb.) P.Beauv.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310548
title: Investigation of the magnetic properties of the perovskite Ba3PrRu2O9 using muon spin relaxation

description: The perovskites containing both ruthenium and lanthanide ions are of particular interest for the study of magnetic cooperative phenomena due to interactions between d and f electrons. We have performed the magnetic susceptibilities, specific heat, and neutron diffraction measurements on D20 at ILL for Ba3PrRu2O9 polycrystalline sample. It was found that a Pr4+ antiferromagnetic transition occurred at around 5 K and that Ba3PrRu2O9 showed magnetic behavior due to the Ru4+2O9 dimer in the higher temperature range. The magnetic susceptibility increases with a temperature above 200 K. However, this behavior cannot be explained by the dimer model. Powder neutron diffraction measurements at 2 K do not show clear magnetic brag peaks. In order to further clarify the magnetic ground state of Ba3PrRu2O9, we proposed to carry out µSR measurements on EMU/HiFi.
DOI: 10.5286/isis.e.rb2310548-1
title: Investigation of the magnetic properties of the perovskite Ba3PrRu2O9 using muon spin relaxation

description: The perovskites containing both ruthenium and lanthanide ions are of particular interest for the study of magnetic cooperative phenomena due to interactions between d and f electrons. We have performed the magnetic susceptibilities, specific heat, and neutron diffraction measurements on D20 at ILL for Ba3PrRu2O9 polycrystalline sample. It was found that a Pr4+ antiferromagnetic transition occurred at around 5 K and that Ba3PrRu2O9 showed magnetic behavior due to the Ru4+2O9 dimer in the higher temperature range. The magnetic susceptibility increases with a temperature above 200 K. However, this behavior cannot be explained by the dimer model. Powder neutron diffraction measurements at 2 K do not show clear magnetic brag peaks. In order to further clarify the magnetic ground state of Ba3PrRu2O9, we proposed to carry out µSR measurements on EMU/HiFi.
DOI: 10.5286/isis.e.rb2490061
title: Symmetry confirmation of Li2SrNb2O7 at ambient and low temperature
DOI: 10.3535/5ee-pgk-7d7
title: Eragrostis minor Host

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/k6f-4df-9le
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2320210-1
title: A follow-up of RB2220594: Probing the effects of shear and extension on Nanodrug Hydrogel Drug Systems using Rheo-SANS

description: The proposed experiments are a follow-up for beamtime RB2220594, aiming to evaluate and optimise a novel smart controlled release injectable liposomal hydrogel drug delivery system from low cost precursors, Pluronic F-127 and Chitosan. The matrix’s sol-gel phase transition in the body allows them to be administered as drug loaded solutions before transforming to soft gel depots at body temperature, then releasing the drug over a designed time. The liposomes’ structural similarity to cells allows for enhanced drugs bioavailability and increased blood circulation time. The proposed systems are designed to regulate the release of Secukinumab® for the treatment of plaque Psoriasis, aiming to reduce cost/dosing frequency and enhance patients’ compliance. The requested beamtime will build on the previous successful experiments using three bespoke flow cells, to optimise data collection, expand measurements in both x and y axes and map structural progression in both shear and extension, as experienced during processing and real bodily administration. Paired with previously published work and ongoing rheological/optical measurements the beamtime will allow full understanding of the flow-structure correlation, instability dynamics in soft matter, and create a model for release behaviour from systems with similar morphology.
DOI: 10.5286/isis.e.rb2467001
title: Exploring Local and Global Stretching of Semiconducting Polymer Chains in Thin Films

description: The pursuit of semiconducting polymers for soft electronics has gained significant momentum to their flexibility and processability. Initial research focused on mechanically stretchable materials, but recent efforts have shifted towards understanding molecular chain orientation during stretching. Anisotropy in charge carrier mobility is observed in polythiophenes under mechanical stress, yet understanding tensile alignment, especially in rigid conjugated polymers, is lacking. 

Existing characterization tools offer limited insights into multi-scale chain conformation changes during stretching. Neutron scattering with deuterium labeling uniquely probes polymer chains in amorphous and crystalline regions, overcoming limitations of traditional methods. We will investigate how alkyl sidechain length influences single chain conformation during stretching of semi-rigid polymer chains in films using small angle neutron scattering (SANS). DPP-based polymers with varying side chains will be synthesized, and SANS will monitor single chain conformation. Mixing hydrogenated and deuterated polymers will provide scattering contrast, facilitating the study of local conformation changes at different length scales. Understanding the role of alkyl sidechains in local molecular conformation change is crucial for improving charge transport in these materials. This research holds promise for advancing the development of flexible and wearable electronics.
DOI: 10.5286/isis.e.rb2467001-1
title: Exploring Local and Global Stretching of Semiconducting Polymer Chains in Thin Films

description: The pursuit of semiconducting polymers for soft electronics has gained significant momentum to their flexibility and processability. Initial research focused on mechanically stretchable materials, but recent efforts have shifted towards understanding molecular chain orientation during stretching. Anisotropy in charge carrier mobility is observed in polythiophenes under mechanical stress, yet understanding tensile alignment, especially in rigid conjugated polymers, is lacking. 

Existing characterization tools offer limited insights into multi-scale chain conformation changes during stretching. Neutron scattering with deuterium labeling uniquely probes polymer chains in amorphous and crystalline regions, overcoming limitations of traditional methods. We will investigate how alkyl sidechain length influences single chain conformation during stretching of semi-rigid polymer chains in films using small angle neutron scattering (SANS). DPP-based polymers with varying side chains will be synthesized, and SANS will monitor single chain conformation. Mixing hydrogenated and deuterated polymers will provide scattering contrast, facilitating the study of local conformation changes at different length scales. Understanding the role of alkyl sidechains in local molecular conformation change is crucial for improving charge transport in these materials. This research holds promise for advancing the development of flexible and wearable electronics.
DOI: 10.15468/dl.8emfnf
title: Occurrence Download

description: A dataset containing 12 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Bidens frondosa L.",
 "Country is Greece",
 "HasCoordinate is true"
 ]
}

 The dataset includes 12 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109257-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.34816/ifao.archives.232688
title: SAQQARA_pv_2004_00727

description: Référence : pv_2004_00727<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/rla-85h-8zl
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/v5w-c1k-37d
title: Calendula L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2200305-1
title: Understanding the impact of high-voltage cycling on the structural stability of cobalt-free LiNiO2 using operando neutron diffraction

description: To increase discharge capacity in layered transition metal oxides as cathodes for Li-ion batteries, higher Ni loadings are being utilised. This has recently renewed interest in the species LiNiO2 (LNO) as the end member of this series. The increased capacity overserved for LNO comes with a number of complex, sharp phase changes during cycling, particularly at high voltages, which result in increased capacity but rapid capacity fading. This is accompanied by a dynamic interplay between the different atom pairs in the structure which cause a wide range of effects in the structure. We propose to study these phenomena by using operando neutron diffraction during high-voltage charge/discharge to collect, and subsequently analyse, both the Bragg and Total Scattering data. This study will aid efforts to mitigate the capacity fade and improve the performance of LNO.
DOI: 10.5286/isis.e.rb2310133-2
title: Magnetic Field Study on the Tc-coupled Spin Excitation in Spin-triplet Superconductor Candidate UTe2

description: UTe2 has drawn a lot of attention among the superconductivity (SC) community recently for the promising secondary evidence of spin-triplet Cooper pairing shown in this system through temperature-independent NMR Knight shift, the highly anisotropic and unusually large upper critical field, power-law behavior of the specific heat, and ferromagnetic spin fluctuation hinted by the magnetic susceptibility. Inelastic neutron scattering can provide information on the pairing mechanism by probing the low energy excitation due to the ferromagnetic spin fluctuations. Our previous experiments at CNCS on co-aligned UTe2 sample in its 0KL and HK0 plane showed rod-like magnetic excitations at Brillouin zone boundary which develop a spin gap and a spin resonance upon entering the SC state. To further investigate the cause of the spin resonance, we propose to study magnetic field effect on this excitation.
DOI: 10.5286/isis.e.rb2320210
title: A follow-up of RB2220594: Probing the effects of shear and extension on Nanodrug Hydrogel Drug Systems using Rheo-SANS

description: The proposed experiments are a follow-up for beamtime RB2220594, aiming to evaluate and optimise a novel smart controlled release injectable liposomal hydrogel drug delivery system from low cost precursors, Pluronic F-127 and Chitosan. The matrix’s sol-gel phase transition in the body allows them to be administered as drug loaded solutions before transforming to soft gel depots at body temperature, then releasing the drug over a designed time. The liposomes’ structural similarity to cells allows for enhanced drugs bioavailability and increased blood circulation time. The proposed systems are designed to regulate the release of Secukinumab® for the treatment of plaque Psoriasis, aiming to reduce cost/dosing frequency and enhance patients’ compliance. The requested beamtime will build on the previous successful experiments using three bespoke flow cells, to optimise data collection, expand measurements in both x and y axes and map structural progression in both shear and extension, as experienced during processing and real bodily administration. Paired with previously published work and ongoing rheological/optical measurements the beamtime will allow full understanding of the flow-structure correlation, instability dynamics in soft matter, and create a model for release behaviour from systems with similar morphology.
DOI: 10.3535/hpj-0j4-49j
title: Dinebra chinensis (L.) P.M.Peterson & N.Snow

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2200305
title: Understanding the impact of high-voltage cycling on the structural stability of cobalt-free LiNiO2 using operando neutron diffraction

description: To increase discharge capacity in layered transition metal oxides as cathodes for Li-ion batteries, higher Ni loadings are being utilised. This has recently renewed interest in the species LiNiO2 (LNO) as the end member of this series. The increased capacity overserved for LNO comes with a number of complex, sharp phase changes during cycling, particularly at high voltages, which result in increased capacity but rapid capacity fading. This is accompanied by a dynamic interplay between the different atom pairs in the structure which cause a wide range of effects in the structure. We propose to study these phenomena by using operando neutron diffraction during high-voltage charge/discharge to collect, and subsequently analyse, both the Bragg and Total Scattering data. This study will aid efforts to mitigate the capacity fade and improve the performance of LNO.
DOI: 10.5286/isis.e.rb2490016
title: Residual Stress in Environmental Barrier Coatings for SiC-SiC Aerospace Composites
DOI: 10.5286/isis.e.rb2490016-1
title: Residual Stress in Environmental Barrier Coatings for SiC-SiC Aerospace Composites
DOI: 10.34816/ifao.archives.232689
title: SAQQARA_pv_2004_00728

description: Référence : pv_2004_00728<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/738-v3q-zne
title: Neotinea ustulata (L.) R.M.Bateman, Pridgeon & M.W.Chase

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/v7t-yhg-f6t
title: Leersia hexandra Sw.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2300002-3
title: Quantum tuning of magnetic phases in vanadium sulphide single crystals

description: Strongly correlated electron systems are known to host a variety of exotic phenomena and novel quantum phases. The transition-metal chalcogenide system, VxS8, is of particular interest, for it displays a wide range of behaviour on changing the stoichiometry, from a charge density wave metal (x=4) to an antiferromagnetic metal (x=5, 6) and even, a paramagnet metal (x=8). Here, we focus on V5S8, where we have observed that magnetic interactions between the vanadium d-electrons lead to an antiferromagnetic phase below 32K. We now propose to use the Wish instrument to explore the rich magnetic phase space available in this compound, by conducting a series of both powder and single-crystal neutron diffraction experiments at both zero and non-zero magnetic fields.
DOI: 10.5286/isis.e.rb2368026
title: Magnetic ground state of Spin-orbit Coupled Mott Insulator Ca2Ru(1-x)SnxO4
DOI: 10.5286/isis.e.rb2368026-1
title: Magnetic ground state of Spin-orbit Coupled Mott Insulator Ca2Ru(1-x)SnxO4
DOI: 10.3535/7ft-3f1-wn8
title: Dinebra chinensis (L.) P.M.Peterson & N.Snow

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/8kr-3ln-ccp
title: Sporobolus michauxianus (Hitchc.) P.M.Peterson & Saarela

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.