cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.34816/ifao.archives.232829
title: SAQQARA_nb_1994_03301

description: Référence : nb_1994_03301<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/2rf-9jb-6d2
title: Gastridium ventricosum (Gouan) Schinz & Thell.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2420143
title: Short range order in dimethyl carbonate and lithium hexafluorophosphate - model system for lithium-ion battery electrolyte
DOI: 10.5286/isis.e/isis.e.rb2420143-1
title: Short range order in dimethyl carbonate and lithium hexafluorophosphate - model system for lithium-ion battery electrolyte
DOI: 10.5286/isis.e/isis.e.rb2490250
title: Low energy spin wave excitations in a 2D magnet NdPt2B
DOI: 10.15468/dl.rgrvft
title: Occurrence Download

description: A dataset containing 615 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Bidens frondosa L.",
 "Country is Switzerland",
 "HasCoordinate is true"
 ]
}

 The dataset includes 615 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109280-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.3535/vbm-17p-pgt
title: Rapistrum rugosum (L.) All.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2220660-1
title: Magnetic Excitations in Parent Compounds of Nickelate Superconductors

description: The discovery of the superconductivity in cuprates has motivated the study of compounds with similar structures aiming to find new superconductors and understand the microscopic origin of the unconventional superconductivity. In general, superconductivity in cuprates is believed to arise from spin fluctuations, which play a critical role in mediating the electrons to form Cooper pairs. Following the approach to study isostructural compounds of cuprates, superconductivity is reported in soft-chemistry topotactic reduced NdNiO2 and Nd0.8Sr0.2NiO2 thin films, indicating possible series of superconductors based on reduced layered nickelate structure. We propose to perform an inelastic neutron scattering experiment on MERLIN to determine the magnetic excitations in tri-layer nickelate compounds Nd4Ni3O8 and Nd4Ni3O10, and infinite-layer nickelate compound NdNiO2 with poly-crystalline samples.
DOI: 10.5286/isis.e/isis.e.rb2410685
title: High Resolution Neutron Powder Diffraction Study of CDW Transition in CuIr2Te4

description: CuIr2Te4 crystallizes in a disordered trigonal structure (space group P-3m1) as a quasi-two-dimensional system and exhibits coexistence of superconductivity (Tc = 2.5 K), and charge density wave transition (TCDW = 250 K). The first-principles calculations suggest that the CDW transition is not associated with Fermi surface nesting. The Ir-doping at the Te site suppresses the CDW transition and a maximum Tc of 2.95 K is seen for CuIr2Te3.9I0.1 . An interesting phase diagram from complete suppression to revival of CDW transition at higher doping level is displayed for higher x in CuIr2Te4-xIx. We propose to carry out high resolution neutron powder diffraction measurements to investigate the structural transition in CuIr2Te4 which will help us understand the origin of CDW transition and its role in developing a superconducting state. We have submitted a proposal on MuSR to investigate superconducting pairing symmetry of this material and the results from the proposed HRPD will help to write a high impact paper.
DOI: 10.5286/isis.e/isis.e.rb2410685-1
title: High Resolution Neutron Powder Diffraction Study of CDW Transition in CuIr2Te4
DOI: 10.34816/ifao.archives.232830
title: SAQQARA_nb_1994_03302

description: Référence : nb_1994_03302<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/3e5-9z3-8la
title: Notoceras bicorne (Aiton) Caruel

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/s58-j65-sqh
title: Papaver L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2220660
title: Magnetic Excitations in Parent Compounds of Nickelate Superconductors

description: The discovery of the superconductivity in cuprates has motivated the study of compounds with similar structures aiming to find new superconductors and understand the microscopic origin of the unconventional superconductivity. In general, superconductivity in cuprates is believed to arise from spin fluctuations, which play a critical role in mediating the electrons to form Cooper pairs. Following the approach to study isostructural compounds of cuprates, superconductivity is reported in soft-chemistry topotactic reduced NdNiO2 and Nd0.8Sr0.2NiO2 thin films, indicating possible series of superconductors based on reduced layered nickelate structure. We propose to perform an inelastic neutron scattering experiment on MERLIN to determine the magnetic excitations in tri-layer nickelate compounds Nd4Ni3O8 and Nd4Ni3O10, and infinite-layer nickelate compound NdNiO2 with poly-crystalline samples.
DOI: 10.5286/isis.e/isis.e.rb2410327
title: Investigation of microscopic superconducting properties of topological semimetal MPtSi (M = Nb, Ta)

description: Topological materials have garnered significant attention in condensed matter physics for their unique surface states with Z2 topological properties. Recent discoveries have unveiled superconductivity with time-reversal symmetry breaking in materials like (Ta, Nb)OsSi, while observing Z2 topological features coexisting with superconductivity in layered kagome structures like AV3Sb5. This study focuses on the isostructural similarities between MPtSi and (Ta, Nb)OsSi, to shed light on the intricate interplay between topology and superconductivity. The proposed μSR study will explore internal fields, penetration depth, and superconducting gap symmetry, providing a comprehensive understanding of the superconducting state in MPtSi.
DOI: 10.5286/isis.e/isis.e.rb2410327-1
title: Investigation of microscopic superconducting properties of topological semimetal MPtSi (M = Nb, Ta)

description: Topological materials have garnered significant attention in condensed matter physics for their unique surface states with Z2 topological properties. Recent discoveries have unveiled superconductivity with time-reversal symmetry breaking in materials like (Ta, Nb)OsSi, while observing Z2 topological features coexisting with superconductivity in layered kagome structures like AV3Sb5. This study focuses on the isostructural similarities between MPtSi and (Ta, Nb)OsSi, to shed light on the intricate interplay between topology and superconductivity. The proposed μSR study will explore internal fields, penetration depth, and superconducting gap symmetry, providing a comprehensive understanding of the superconducting state in MPtSi.
DOI: 10.15468/dl.kmgakn
title: Occurrence Download

description: A dataset containing 7691 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Bidens frondosa L.",
 "Country is Russian Federation",
 "HasCoordinate is true"
 ]
}

 The dataset includes 7691 records from 31 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109279-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.3535/cah-r1q-30t
title: Lepidium spinosum Ard.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/vlk-rtp-qyf
title: Periploca aphylla Decne.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2420010
title: Disentangling lattice and electronic ordering in U2Ti

description: U2Ti is a three dimensional metallic system that has been shown to host a Peierls-like CDW ordering at low temperature; the ordering is one dimensional and forms without domain structure [C. R. Stevens et al. PRB. 109(12), 125116 (2024)]. However, despite its simplicity this state is preceded by an incommensurate (ICDW) ordering transition at higher temperature. These transitions appear to be distinct in their effect on the electronic and lattice degrees of freedom, as indicated by thermodynamic properties and temperature dependence of the lattice parameters. The distinction motivates neutron diffraction, to differentiate the charge ordering (already measured by x-ray diffraction) from the lattice displacements (that we propose to measure with neutron diffraction). Comparison of the ordering wavevector and diffraction intensity from these two methods will shed light on this unusual ordering and is potentially relevant to slow charge fluctuations, linked to nearby CDWs, that may play an important role in the formation of strange metal states in high-temperature superconductors and heavy fermions.
DOI: 10.5286/isis.e/isis.e.rb2420352
title: Switchable Chaotropicity: Structure of polyoxometalate-cellulose ether solutions and gels under UV

description: Nanometer sized ions with low charge density, such as polyoxometalates (POMs), bind to non-ionic hydrated matter driven by the chaotropic effect in order to shed their weakly bound hydration water. In solutions of the non-ionic cellulose ether hydroxypropylcellulose, chaotropic POMs bind to the polymer at millimolar concentrations, whichs lead to an interplay of electric charging and physical crosslinking of the polymer chains and provides a simple gelation pathway for cellulose ethers. Here, we use the photocatalytic POMs PW12O40(3-) and SiW12O40(4-), in conjunction with HPC to produce highly viscous solutions with UV-responsive rheological properties. Upon UV-irradiation, the POM undergoes a reduction reaction with alcohol groups of HPC, which makes the charge of the POM increase leading to its stronger hydration, weaker binding with HPC and a decrease in crosslinking and viscosity. The POM is re-oxidized upon exposure to atmospheric O2, which leads to an increase in viscosity. We request SANS-beamtime, in order to investigate the effects of UV-irradiation on the solution structure of HPC in the presence of photocatalytic POMs. We will probe systematically the form factor of the HPC-polymer in dilute solution and the correlation length in entangled solution in the presence of photoreduced or re-oxidized POM in order to understand the molecular mechanism behind this concept of "switchable chaotropicity".
DOI: 10.5286/isis.e/isis.e.rb2420352-1
title: Switchable Chaotropicity: Structure of polyoxometalate-cellulose ether solutions and gels under UV

description: Nanometer sized ions with low charge density, such as polyoxometalates (POMs), bind to non-ionic hydrated matter driven by the chaotropic effect in order to shed their weakly bound hydration water. In solutions of the non-ionic cellulose ether hydroxypropylcellulose, chaotropic POMs bind to the polymer at millimolar concentrations, whichs lead to an interplay of electric charging and physical crosslinking of the polymer chains and provides a simple gelation pathway for cellulose ethers. Here, we use the photocatalytic POMs PW12O40(3-) and SiW12O40(4-), in conjunction with HPC to produce highly viscous solutions with UV-responsive rheological properties. Upon UV-irradiation, the POM undergoes a reduction reaction with alcohol groups of HPC, which makes the charge of the POM increase leading to its stronger hydration, weaker binding with HPC and a decrease in crosslinking and viscosity. The POM is re-oxidized upon exposure to atmospheric O2, which leads to an increase in viscosity. We request SANS-beamtime, in order to investigate the effects of UV-irradiation on the solution structure of HPC in the presence of photocatalytic POMs. We will probe systematically the form factor of the HPC-polymer in dilute solution and the correlation length in entangled solution in the presence of photoreduced or re-oxidized POM in order to understand the molecular mechanism behind this concept of "switchable chaotropicity".
DOI: 10.34816/ifao.archives.232831
title: SAQQARA_nb_1994_03304

description: Référence : nb_1994_03304<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/9lv-snd-064
title: Brassicaceae Burnett

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/ybt-17s-040
title: Forsskaolea tenacissima L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2420010-1
title: Disentangling lattice and electronic ordering in U2Ti

description: U2Ti is a three dimensional metallic system that has been shown to host a Peierls-like CDW ordering at low temperature; the ordering is one dimensional and forms without domain structure [C. R. Stevens et al. PRB. 109(12), 125116 (2024)]. However, despite its simplicity this state is preceded by an incommensurate (ICDW) ordering transition at higher temperature. These transitions appear to be distinct in their effect on the electronic and lattice degrees of freedom, as indicated by thermodynamic properties and temperature dependence of the lattice parameters. The distinction motivates neutron diffraction, to differentiate the charge ordering (already measured by x-ray diffraction) from the lattice displacements (that we propose to measure with neutron diffraction). Comparison of the ordering wavevector and diffraction intensity from these two methods will shed light on this unusual ordering and is potentially relevant to slow charge fluctuations, linked to nearby CDWs, that may play an important role in the formation of strange metal states in high-temperature superconductors and heavy fermions.
DOI: 10.5286/isis.e/isis.e.rb2490229
title: Crystal field excitations in the Pr3Ga5O12 garnet
DOI: 10.5286/isis.e/isis.e.rb2490229-1
title: Crystal field excitations in the Pr3Ga5O12 garnet
DOI: 10.34816/ifao.archives.232832
title: SAQQARA_nb_1994_03305

description: Référence : nb_1994_03305<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/m06-af7-q93
title: Gymnocarpos decander Forssk.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2420413
title: Ferroptosis in cancer therapy: discovering the structural and lipidomic role of the mitochondria in tumor suppression.

description: Conventional cell death processes are well-defined, including necrosis, apoptosis, and autophagy. However, in 2012, Dixon introduced the idea of ferroptosis, an iron-dependent form of cell death characterized by lipid reactive oxygen species accumulation. Unlike traditional cell death, ferroptosis has unique morphological changes such as mitochondrial shrinkage, altered bilayer density, and cristae vanishing.
Despite advances, understanding ferroptosis remains elusive, necessitating research into its regulatory mechanisms. Notably, lipid remodeling in mitochondrial membranes emerges as a crucial determinant of ferroptosis modulation. However, traditional techniques face challenges in elucidating membrane dynamics at the molecular level. Leveraging neutron scattering, particularly small-angle neutron scattering (SANS), offers a probe-free approach to investigate membrane structures, crucial for deciphering ferroptosis mechanisms.
This study aims to uncover the intricate relationship between cancerous mitochondrial membranes, ferroptosis, and potential therapeutic interventions. By exploring the interactions of pancratistatin (PST) and vitamin E (VitE) with ferroptotic mitochondria, insights into ferroptosis modulation can be gained. Additionally, this work may elucidate the synergistic effects of PST and ferroptosis in enhancing cancer therapies, alongside VitE's potential in mitigating ferroptosis-induced damage.
DOI: 10.5286/isis.e/isis.e.rb2420413-1
title: Ferroptosis in cancer therapy: discovering the structural and lipidomic role of the mitochondria in tumor suppression.

description: Conventional cell death processes are well-defined, including necrosis, apoptosis, and autophagy. However, in 2012, Dixon introduced the idea of ferroptosis, an iron-dependent form of cell death characterized by lipid reactive oxygen species accumulation. Unlike traditional cell death, ferroptosis has unique morphological changes such as mitochondrial shrinkage, altered bilayer density, and cristae vanishing.
Despite advances, understanding ferroptosis remains elusive, necessitating research into its regulatory mechanisms. Notably, lipid remodeling in mitochondrial membranes emerges as a crucial determinant of ferroptosis modulation. However, traditional techniques face challenges in elucidating membrane dynamics at the molecular level. Leveraging neutron scattering, particularly small-angle neutron scattering (SANS), offers a probe-free approach to investigate membrane structures, crucial for deciphering ferroptosis mechanisms.
This study aims to uncover the intricate relationship between cancerous mitochondrial membranes, ferroptosis, and potential therapeutic interventions. By exploring the interactions of pancratistatin (PST) and vitamin E (VitE) with ferroptotic mitochondria, insights into ferroptosis modulation can be gained. Additionally, this work may elucidate the synergistic effects of PST and ferroptosis in enhancing cancer therapies, alongside VitE's potential in mitigating ferroptosis-induced damage.
DOI: 10.5286/isis.e/isis.e.rb2490245-1
title: We would like to measure compound SmTi3Bi4 at 4K using SXD
DOI: 10.3535/9ga-9p5-zp7
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/qp1-rw9-svp
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2410697
title: Fusion of asymmetric lipid vesicles with endosomal and plasma membrane mimicking bilayers.
DOI: 10.5286/isis.e/isis.e.rb2410697-2
title: Fusion of asymmetric lipid vesicles with endosomal and plasma membrane mimicking bilayers.

description: Extracellular vesicle (EVs) are lipid membrane-bound nanoparticles produced by cells, which measure 10s to 100s of nm in diameter. Due to their provenance, they are innately biocompatible and have huge potential in therapeutics and diagnostics. While the roles of the proteins and nucleic acid cargoes are well studied in these processes and applications, less is known about the role of the lipids. Two crucial steps in delivery of nanoparticle-encapsulated cargo are cell uptake and subsequent endosomal escape. Both of these processes involve traversing a lipid membrane, although the physical and chemical environments vary between these two processes. In this NR experiment, we will study how vesicles mimicking the lipid composition of cancer cell-derived EVs interact with floating membrane bilayers representing cell plasma membranes and intercellular compartments, and study the fusion processes observed in the presence and absence of serum proteins at a range of pH from 7.4 to 4. This beamtime represents the second in a series of neutron reflectometry experiments in which we will identify the role that the lipid composition and asymmetric distribution of EVs and their synthetic mimics play in cell uptake and endosomal release. It is a crucial step forward in the field of understanding the biophysical mechanisms behind such biological processes, and paves the way towards identifying new EV-mimicking drug delivery vehicles for nucleic acid therapies.
DOI: 10.34816/ifao.archives.232833
title: SAQQARA_nb_1994_03306

description: Référence : nb_1994_03306<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/xz1-rzx-ery
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2410740-2
title: Characterisation of lipid distribution across membrane leaflets in asymmetric lipid vesicles

description: Extracellular vesicles (EVs) are key mediators in the fundamental processes of communication and transfer of material between cells. These lipid membrane-bound nanoparticles are produced by cells, and are innately biocompatible, with huge potential in therapeutics and diagnostics. Like cells, they are postulated to possess lipid asymmetry across the membrane bilayer, i.e. the inner and outer membrane leaflets have chemically distinct compositions. 
We are developing vesicles with asymmetric distributions of lipids across the membrane, which mimic the lipid compositions found in EVs and can be applied as model systems to study the role of lipid composition in EV structure and function. In this beamtime we will study these asymmetric vesicles, formulated to include leaflet-localised deuterated lipids, which will allow the extent of asymmetry to be established via contrast variation. We will also characterise sub-populations within samples by offline separation via AF4. The results will allow us to quantify lipid distribution and dynamic lipid rearrangement processes in EV-mimicking asymmetric vesicles, at conditions mimicking intercellular environment. Knowlege of this nature is crucial in the study of the effect of lipid membrane asymmetry on uptake of such vesicles by cells. Being able to characterise heterogeneity within populations is also a critical step forward in studying the physiological roles of EVs, which contain mixtures of different vesicle populations.
DOI: 10.5286/isis.e/isis.e.rb2418001
title: Structure and local dynamics of a deep eutectic solvent system suitable for cryopreservation of biological material– glycerol/proline
DOI: 10.5286/isis.e/isis.e.rb2418001-1
title: Structure and local dynamics of a deep eutectic solvent system suitable for cryopreservation of biological material– glycerol/proline
DOI: 10.3535/cw4-wwr-363
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/s24-056-ywg
title: Stachys cretica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2410439
title: The effect of La substitution on the strength of spontaneous magnetic fields in Sr2RuO4

description: It is predicted that spontaneous electrical currents appear around crystalline defects, domain walls and surfaces in superconductors with broken time-reversal symmetry. However, the experimental evidence in favour of this prediction is mixed. Here, we propose to investigate the effect of inhomogeneities created by La doping in Sr2RuO4 using zero-field µSR measurements. The anticipated results will allow an understanding of the relation of the spontaneous field strength with defect density and the size of the superconducting order parameter.
DOI: 10.5286/isis.e/isis.e.rb2410439-1
title: The effect of La substitution on the strength of spontaneous magnetic fields in Sr2RuO4

description: It is predicted that spontaneous electrical currents appear around crystalline defects, domain walls and surfaces in superconductors with broken time-reversal symmetry. However, the experimental evidence in favour of this prediction is mixed. Here, we propose to investigate the effect of inhomogeneities created by La doping in Sr2RuO4 using zero-field µSR measurements. The anticipated results will allow an understanding of the relation of the spontaneous field strength with defect density and the size of the superconducting order parameter.
DOI: 10.5286/isis.e/isis.e.rb2410740
title: Characterisation of lipid distribution across membrane leaflets in asymmetric lipid vesicles