cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2310502-1
title: Molecular Origin of “kyu-kyu” in Detergency: Interaction of Surfactants with Model Stratum Corneum Liposomes

description: In the context of dishwashing, the acoustic emissions derived by the physical contact of the human fingertip across a wet lubricated surface (or dish) are defined by the Japanese term, ‘kyu-kyu’. These ‘kyu-kyu’ or squeaking sounds, indicative of customer satisfaction of a cleaned surface, have their origin in a physical phenomenon known as stick-slip friction. We hypothesize that this stick-slip, facilitated by the presence of a detergent, is caused in part by disruption of the surfactant bilayer absorbed to the contacting surface as rinsing occurs. The friction force may be mediated by the presence of mixed micelles, polymer additives, soils and skin lipids. Here, continuing on previous work in collaboration with Procter & Gamble, we propose a small angle neutron scattering (SANS) study of model stratum corneum (SC) liposomes and their interactions with common surfactants, SDS and DDAO (dodecyldimethylamine oxide), which are analogues of the surfactants used in P&G formulation. The SC lipid system comprises equimolar mixtures of ceramide N-lignoceroyl-D-erythro-sphingosine (Cer24NS)/free fatty acid (FFA)/cholesterol (Chol). The results will complement our direct measurement of friction between skin-mimics and a contacting surface, mediated by mixed surfactant systems.
DOI: 10.3535/2bm-b6f-jlj
title: Rauia spicata Haye

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/xpb-klf-41b
title: Secale vavilovii Grossh.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310502
title: Molecular Origin of “kyu-kyu” in Detergency: Interaction of Surfactants with Model Stratum Corneum Liposomes

description: In the context of dishwashing, the acoustic emissions derived by the physical contact of the human fingertip across a wet lubricated surface (or dish) are defined by the Japanese term, ‘kyu-kyu’. These ‘kyu-kyu’ or squeaking sounds, indicative of customer satisfaction of a cleaned surface, have their origin in a physical phenomenon known as stick-slip friction. We hypothesize that this stick-slip, facilitated by the presence of a detergent, is caused in part by disruption of the surfactant bilayer absorbed to the contacting surface as rinsing occurs. The friction force may be mediated by the presence of mixed micelles, polymer additives, soils and skin lipids. Here, continuing on previous work in collaboration with Procter & Gamble, we propose a small angle neutron scattering (SANS) study of model stratum corneum (SC) liposomes and their interactions with common surfactants, SDS and DDAO (dodecyldimethylamine oxide), which are analogues of the surfactants used in P&G formulation. The SC lipid system comprises equimolar mixtures of ceramide N-lignoceroyl-D-erythro-sphingosine (Cer24NS)/free fatty acid (FFA)/cholesterol (Chol). The results will complement our direct measurement of friction between skin-mimics and a contacting surface, mediated by mixed surfactant systems.
DOI: 10.5286/isis.e.rb2310507
title: Neutron diffraction study of magnetic ordering in quasi-1D S=1 Haldane chain compounds

description: Materials with (S=1) Ni2+ ions in quasi-one-dimensional spin-chains are of great interest because of the formation of a Haldane gap in the ground state. The compounds PbM2Ni6Te3O18 (M = Fe, Co, Zn) are new systems with hexagonal structure and quasi-1D chains formed by Ni2+. The M2+ ions provide additional spins whit S=2, S=3/2 and S=0 for M=Fe, Co and Zn respectively, tuning the exchange interactions and proving new degree of freedom. Recently our group has investigated another member of the family with M=Cd, using elastic and inelastic neutron scattering. The obtained result revealed a complex AFM ordering with propagation vector k=(1/3 1/3 0), which is different from the simple collinear k=0 magnetic structure found in M=Mn compound. To understand the role of M ions in the magnetic structure stability and the magnetic exchange interactions, we propose to investigate magnetic orders in the M=Fe, Co and Zn members, using WISH diffractometer. The obtained information will also help to analysis spin waves in these compounds, which are going to be investigated using inelastic neutron scattering.
DOI: 10.5286/isis.e.rb2310507-1
title: Neutron diffraction study of magnetic ordering in quasi-1D S=1 Haldane chain compounds

description: Materials with (S=1) Ni2+ ions in quasi-one-dimensional spin-chains are of great interest because of the formation of a Haldane gap in the ground state. The compounds PbM2Ni6Te3O18 (M = Fe, Co, Zn) are new systems with hexagonal structure and quasi-1D chains formed by Ni2+. The M2+ ions provide additional spins whit S=2, S=3/2 and S=0 for M=Fe, Co and Zn respectively, tuning the exchange interactions and proving new degree of freedom. Recently our group has investigated another member of the family with M=Cd, using elastic and inelastic neutron scattering. The obtained result revealed a complex AFM ordering with propagation vector k=(1/3 1/3 0), which is different from the simple collinear k=0 magnetic structure found in M=Mn compound. To understand the role of M ions in the magnetic structure stability and the magnetic exchange interactions, we propose to investigate magnetic orders in the M=Fe, Co and Zn members, using WISH diffractometer. The obtained information will also help to analysis spin waves in these compounds, which are going to be investigated using inelastic neutron scattering.
DOI: 10.3535/6qn-20g-9rf
title: Cynoglossum L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/apl-rqy-4hp
title: Aphanes arvensis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220746
title: Novel ground state in the rare-earth based kagome antiferromagnets: R3BWO9 (R = Pr, Nd)
DOI: 10.5286/isis.e.rb2220746-1
title: Novel ground state in the rare-earth based kagome antiferromagnets: R3BWO9 (R = Pr, Nd)
DOI: 10.5286/isis.e.rb2255004-1
title: A4I Proposal - Echion - Improving the high temperature operations of fast-charging lithium-ion batteries
DOI: 10.3535/hky-jp1-7en
title: Trifolium grandiflorum Schreb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2255004
title: A4I Proposal - Echion - Improving the high temperature operations of fast-charging lithium-ion batteries
DOI: 10.5286/isis.e.rb2310672
title: Operando investigation of SEI formation during Na insertion in hard carbon

description: We are becoming increasingly reliant on energy storage technologies as a vital part of the solution to the energy crisis we currently face. Therefore, the diversification of battery technology is of increasing importance and one such alternative to the dominant Li-ion technology is Na ion batteries (NIBs) as sodium is significantly more abundant and well distributed in the Earth’s crust compared to lithium. The current anode of choice for NIBs is hard carbon (HC) - a class of disordered, porous and non-graphitic carbonaceous material. There are still key questions about the structure, Na-insertion mechanism, and solid-electrolyte interface (SEI) formation in HC that are unanswered. An operando experiment on NIMROD using our custom cell can shed light on these areas simultaneously, as we will focus on SEI formation. We will use contrast matching through deuterated electrolytes to extract chemical information on the SEI formation during cycling. The large Q-range we can access on NIMROD will allow us to identify changes occurring at all the relevant length scales in this system – at the surface of the particles, in the closed pores, as well as in the graphite layers. We can therefore not only observe SEI formation in the pores, but also on the surface, as well as tracking changes in the graphite as Na intercalation occurs. This will contribute to fundamental understanding of this system needed to optimise the electrochemical properties of the hard carbon anode.
DOI: 10.5286/isis.e.rb2310672-2
title: Operando investigation of SEI formation during Na insertion in hard carbon

description: We are becoming increasingly reliant on energy storage technologies as a vital part of the solution to the energy crisis we currently face. Therefore, the diversification of battery technology is of increasing importance and one such alternative to the dominant Li-ion technology is Na ion batteries (NIBs) as sodium is significantly more abundant and well distributed in the Earth’s crust compared to lithium. The current anode of choice for NIBs is hard carbon (HC) - a class of disordered, porous and non-graphitic carbonaceous material. There are still key questions about the structure, Na-insertion mechanism, and solid-electrolyte interface (SEI) formation in HC that are unanswered. An operando experiment on NIMROD using our custom cell can shed light on these areas simultaneously, as we will focus on SEI formation. We will use contrast matching through deuterated electrolytes to extract chemical information on the SEI formation during cycling. The large Q-range we can access on NIMROD will allow us to identify changes occurring at all the relevant length scales in this system – at the surface of the particles, in the closed pores, as well as in the graphite layers. We can therefore not only observe SEI formation in the pores, but also on the surface, as well as tracking changes in the graphite as Na intercalation occurs. This will contribute to fundamental understanding of this system needed to optimise the electrochemical properties of the hard carbon anode.
DOI: 10.3535/0bq-n5r-dbp
title: Vinca herbacea Waldst. & Kit.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/3el-9yb-0f2
title: Trifolium boissieri Guss.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2255011
title: A4I - ABCs of LNPs - Advanced Biophysical Characterisation of Lipid Nanoparticles for mRNA Therapeutics
DOI: 10.5286/isis.e.rb2255011-1
title: A4I - ABCs of LNPs - Advanced Biophysical Characterisation of Lipid Nanoparticles for mRNA Therapeutics
DOI: 10.5286/isis.e.rb2310158-1
title: Time-of-flight imaging of deformation induced phase transformations in cemented carbides

description: Cemented carbides are composites consisting of hard tungsten carbide (WC) grains in a tough binder phase based on cobalt (Co), commonly used as drill bits in the mining industry. When the material is deformation hardened, a phase transformation occurs in the Co phase (from FCC to HCP). The aim of the proposed experiment is to investigate strain evolution and deformation hardening in the WC grains and phase transformations in the Co binder phase as a function of deformation. This will be done using Time-of-flight imaging methods, e.g., looking at Bragg edges, in both 2D and 3D. The expected results are maps of where the FCC-HCP transformation occurs (on the surface of the sample vs. in bulk) and maps of the residual strain in the samples.
DOI: 10.3535/03e-g7l-as9
title: Gentiana Tourn. ex L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/9mc-bfc-4b3
title: Briza maxima L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310158
title: Time-of-flight imaging of deformation induced phase transformations in cemented carbides

description: Cemented carbides are composites consisting of hard tungsten carbide (WC) grains in a tough binder phase based on cobalt (Co), commonly used as drill bits in the mining industry. When the material is deformation hardened, a phase transformation occurs in the Co phase (from FCC to HCP). The aim of the proposed experiment is to investigate strain evolution and deformation hardening in the WC grains and phase transformations in the Co binder phase as a function of deformation. This will be done using Time-of-flight imaging methods, e.g., looking at Bragg edges, in both 2D and 3D. The expected results are maps of where the FCC-HCP transformation occurs (on the surface of the sample vs. in bulk) and maps of the residual strain in the samples.
DOI: 10.5286/isis.e.rb2310285
title: The Early Stages of Zeolite Formation from Gels to Crystals Followed by Neutron Scattering

description: We will use a recently designed reaction cell for following hydrothermal crystallisation in situ to allow the formation mechanism of inorganic materials to the studied using neutron scattering. The advantages of neutrons are their high penetration and the ability to used null-scattering reaction vessels so that we can observe changes from within a reaction vessel. This experiment proposal is a continuation of experiments on the NIMROD instrument for which we obtained preliminary data showing how zeolite formation can be observed. The work will support the PhD thesis of a Facility Development Student.
DOI: 10.5286/isis.e.rb2310285-1
title: The Early Stages of Zeolite Formation from Gels to Crystals Followed by Neutron Scattering

description: We will use a recently designed reaction cell for following hydrothermal crystallisation in situ to allow the formation mechanism of inorganic materials to the studied using neutron scattering. The advantages of neutrons are their high penetration and the ability to used null-scattering reaction vessels so that we can observe changes from within a reaction vessel. This experiment proposal is a continuation of experiments on the NIMROD instrument for which we obtained preliminary data showing how zeolite formation can be observed. The work will support the PhD thesis of a Facility Development Student.
DOI: 10.3535/ll8-ngz-6w8
title: Micromeria myrtifolia Boiss. & Hohen.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/vqb-e4g-xa2
title: Atriplex micrantha Ledeb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310487
title: Magnetic depth profiling of Fe3O4/SrTiO3 heterostructures to reveal dynamics of interfacial switching

description: Controlling the oxide interfaces is the key towards controlling the switching phenomenon and thus realizing functional devices. We found that oxide substrates can take an active part in the redox process at the interface and may be even used to tune properties. Hence, our next goal is to real-time monitor the redox reactions at the interface when the properties or "iron oxide phases" of the interfaces and the films are tuned. We have characterized our samples using different lab techniques, e.g. XRR, XRD, SQUID and GISAXS, or using large scale X-ray facilities, e.g. HAXPES and XMCD. Using SQUID, we observe the disappearance of Verwey transition, the characteristic temperature for Fe3O4, when applying a positive voltage. This indicates a perturbation of oxygen content in the Fe3O4 phase and possible switching to the insulator gamma-Fe2O3 phase at the interface. Thus, our next step is to monitor in-situ the magnetic depth profiling when applied electric field using polarized neutron reflectivity in order to real-time monitor the thickness and the composition of the intralayer.
DOI: 10.5286/isis.e.rb2310487-1
title: Magnetic depth profiling of Fe3O4/SrTiO3 heterostructures to reveal dynamics of interfacial switching

description: Controlling the oxide interfaces is the key towards controlling the switching phenomenon and thus realizing functional devices. We found that oxide substrates can take an active part in the redox process at the interface and may be even used to tune properties. Hence, our next goal is to real-time monitor the redox reactions at the interface when the properties or "iron oxide phases" of the interfaces and the films are tuned. We have characterized our samples using different lab techniques, e.g. XRR, XRD, SQUID and GISAXS, or using large scale X-ray facilities, e.g. HAXPES and XMCD. Using SQUID, we observe the disappearance of Verwey transition, the characteristic temperature for Fe3O4, when applying a positive voltage. This indicates a perturbation of oxygen content in the Fe3O4 phase and possible switching to the insulator gamma-Fe2O3 phase at the interface. Thus, our next step is to monitor in-situ the magnetic depth profiling when applied electric field using polarized neutron reflectivity in order to real-time monitor the thickness and the composition of the intralayer.
DOI: 10.3535/mg7-4yh-7gs
title: Carex paniculata subsp. paniculata

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2010205-2
title: Evolution of porosity and structure of Amorphous Solid Water (ASW)
DOI: 10.5286/isis.e.rb2310596
title: Crowding and salinity effects on the structure of PEG-containing brushes

description: Strongly hydrated polymers are used as coatings for biofouling prevention, and poly(ethylene glycol) (PEG) is a widely used example of this. Wider use of PEG is limited by insufficient stability but this can be improved by adding PEG sidechains to a more stable polymer backbone. However, this alters the structural properties in ways that can be difficult to predict. Here, we will explore the properties of polymer brushes with PEG sidechains from two aspects: i) These brushes show thickness-dependent antifouling performance, which has been associated to differences in hydration and crowding of the polymer with thickness, but further details about the structure, in particular qualitative and quantitative differences in the chain segment density distributions, would considerably improve our understanding and facilitate the development of these brushes into practical coatings. ii) Poor antifouling performance of PEG in solutions of high salinity is hypothesized to be an effect of the recently proposed charging of PEG in aqueous solutions due to adsorption of hydronium ions. If correct, this would imply some degree of polyelectrolyte properties, and subsequent structural changes at high salinity, which we will explore as well.
DOI: 10.5286/isis.e.rb2310596-1
title: Crowding and salinity effects on the structure of PEG-containing brushes

description: Strongly hydrated polymers are used as coatings for biofouling prevention, and poly(ethylene glycol) (PEG) is a widely used example of this. Wider use of PEG is limited by insufficient stability but this can be improved by adding PEG sidechains to a more stable polymer backbone. However, this alters the structural properties in ways that can be difficult to predict. Here, we will explore the properties of polymer brushes with PEG sidechains from two aspects: i) These brushes show thickness-dependent antifouling performance, which has been associated to differences in hydration and crowding of the polymer with thickness, but further details about the structure, in particular qualitative and quantitative differences in the chain segment density distributions, would considerably improve our understanding and facilitate the development of these brushes into practical coatings. ii) Poor antifouling performance of PEG in solutions of high salinity is hypothesized to be an effect of the recently proposed charging of PEG in aqueous solutions due to adsorption of hydronium ions. If correct, this would imply some degree of polyelectrolyte properties, and subsequent structural changes at high salinity, which we will explore as well.
DOI: 10.15468/dl.sbydky
title: Occurrence Download

description: A dataset containing 28 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Flora Biodiversity Surveys: Aguada Pichana Este, Añelo, Neuquén, Argentina – 2023/2024 – TotalEnergies E&P Austral B.V."
 ]
}

 The dataset includes 28 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109224-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.3535/h5g-rx3-tbx
title: Carex digitata L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/lyp-31a-q75
title: Lecidea

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310357
title: Magnon Dispersions in the Centrosymmetric Skyrmion Host GdRu2Si2

description: We aim to understand the magnetic interactions in the centrosymmetric skyrmion host GdRu2Si2. Our neutron diffraction studies have identified a rich set of topologically distinct magnetic structures, including one-dimensional topological charge stripes, skyrmions and merons. We intend to examine the set of magnon dispersions across the phase diagram of this material, which will help to deduce the Hamiltonian of this system. This particular material is well suited to these measurements since the magnetic unit cell is unusually small, and the Gilbert damping of the Gd is light, therefore reducing the number of dispersions considerably and making them more straightforward to resolve.
DOI: 10.5286/isis.e.rb2310357-1
title: Magnon Dispersions in the Centrosymmetric Skyrmion Host GdRu2Si2

description: We aim to understand the magnetic interactions in the centrosymmetric skyrmion host GdRu2Si2. Our neutron diffraction studies have identified a rich set of topologically distinct magnetic structures, including one-dimensional topological charge stripes, skyrmions and merons. We intend to examine the set of magnon dispersions across the phase diagram of this material, which will help to deduce the Hamiltonian of this system. This particular material is well suited to these measurements since the magnetic unit cell is unusually small, and the Gilbert damping of the Gd is light, therefore reducing the number of dispersions considerably and making them more straightforward to resolve.
DOI: 10.5286/isis.e.rb2369004-1
title: Understanding the structure of novel RNA-Lipid nanoparticles using SANS

description: The recent Covid-19 pandemic has shown both the efficacy and need to develop effective vaccines and drug delivery. One technology which has been very effective at this uses lipid nanoparticles. These are small particles in which the lipid layer allows us to target the immune system. The nanoparticles are used to deliver a dose of mRNA. The exact dose held depends upon the encapsulation properties of the nanoparticle. We propose using SANS to look at the properties of a novel lipid nanoparticle system to determine how this system is able to encpsulate a high degree of mRNA and also remain very stable over a long period of time, contrary to other systems which require freezing.
DOI: 10.3535/08v-lgh-5h7
title: Ramalina ketner-oostrae Aptroot

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/trj-yf8-2wq
title: Cirsium vulgare (Savi) Ten.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310226-1
title: Nucleation and crystal growth from amorphous to crystalline ice

description: Amorphous ice has a non-periodic structure distinct from crystalline phases. It is still challenging to elucidate its physicochemical features explicitly. In this project, we investigate the transient states, nucleation and growth of crystalline ice from amorphous form. Local structures derived from total scattering analysis can provide direct information on the evolusion of atomic alignment from non-periodic structure via nano-crystalline seeds to macrocrystalline ice. Furthermore, this experiment will examine the so-called relaxation within the amorphous structure before crystallisation.