cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2310249-1
title: quantum Fisher information via temperature dependent inelastic neutron scattering measurement in single crystals of a spin ½ Heisenberg dimer C8D16Cu2O10

description: Entanglement is considered a resource in quantum information theory that enables quantum computation. We have calculated bipartite entanglement in a well-known spin ½ Heisenberg chain dimer system C8D16Cu2O10 using temperature dependent magnetic susceptibility measurements. The calculations show the presence of an entanglement temperature near the room temperature. Fisher information has recently been proposed as a measure for m-particle multipartite entanglement that can be obtained via inelastic neutron scattering measurements. Using temperature dependent inelastic neutron scattering measurements on large sized single crystals of C8D16Cu2O10, we wish to confirm the existence of multipartite entanglement in C8D16Cu2O10 till room temperature and provide a model experimental system that could be a potential quantum computer.
DOI: 10.5286/isis.e.rb2410536-1
title: Beta-sitosterol containing lipid nanoparticles as nucleic acid delivery agents

description: There has been a shift in the pharma industry towards delivery of therapeutic agents such as nucleic acids that act within the cell’s cytosol, thereby creating a demand for advanced delivery vehicles, such as lipid nanoparticles (LNPs), the NPs of interest here. An important feature of intracellular delivery is that the vehicle is taken into the cell via endocytosis with the vehicle and its payload becoming engulfed in the acidic environment of the endosome from which it must escape in order for the therapeutic to exert its effect. We have recently shown that the sterol, beta-sitosterol is a more effective delivery agent than cholesterol, when used to prepare the LNP. Here we propose to use neutron reflectometry in combination with isotopic contrast variation to determine the extent of insertion of beta-sitosterol and exchange between LNPs (prepared using the cationic lipid, MC3) with model early endosomal (EEM) membranes at sub-phase pH’s of 5.5 and 6.5. The results obtained here will be extremely important in the design of improved LNPs that can escape the endosome at an early stage with their payload intact and able to exert its effect in the cytosol of the cell.
DOI: 10.5286/isis.e.rb2420195
title: Lipid nanocapsules drug carriers for Benzocain delivery

description: Benzocaine (BZC) is a local anesthetic synthesized through the esterification of para-amino benzoic acid (PABA) and commonly used in dentistry for local antinociception in mucous membranes. Unlike other commercial local anesthetics, BZC does not possess an ionizable amino group near physiological pH, exhibiting a neutral charge at pHs above 3 and limited water solubility. There are reports of systemic toxicity with BZC use, due to the formation of methemoglobin by PABA, a product of its degradation, leading to functional anemia and tissue hypoxia. Another substance widely used in dental practice is eugenol (EUG), found in clove oil. Eugenol, being lipophilic, has several bioactive properties, including anesthetic effect. In this project, we prepared drug-delivery systems (DDS), i.e. lipid nanocapsules (LNC)[1] to co-encapsulate BZC and EUG. Our aim is to prolong the analgesic effect, enhance the therapeutic effects of the drugs, and reduce their toxicity. Essentially, the inclusion of eugenol not only diversifies the composition of the formulation but also enhances the effectiveness of the pharmaceutical strategy employed, paving the way for more comprehensive and efficient solutions in the field of dental anesthesia. LNC, composed of an oily core surrounded by a layer of non-ionic surfactant, are particularly effective as carriers for hydrophobic drugs and, due to their high surfactant concentration, have diameters below 100 nm, making them ideal for topical applications.
DOI: 10.15468/dl.pwfhrd
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Bidens frondosa L.",
 "Country is Uzbekistan",
 "HasCoordinate is true"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109287-250525065834625/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.232869
title: SAQQARA_nb_1994_03347

description: Référence : nb_1994_03347<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/g6v-0ka-3gt
title: Galium pilosum Aiton

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410536
title: Beta-sitosterol containing lipid nanoparticles as nucleic acid delivery agents

description: There has been a shift in the pharma industry towards delivery of therapeutic agents such as nucleic acids that act within the cell’s cytosol, thereby creating a demand for advanced delivery vehicles, such as lipid nanoparticles (LNPs), the NPs of interest here. An important feature of intracellular delivery is that the vehicle is taken into the cell via endocytosis with the vehicle and its payload becoming engulfed in the acidic environment of the endosome from which it must escape in order for the therapeutic to exert its effect. We have recently shown that the sterol, beta-sitosterol is a more effective delivery agent than cholesterol, when used to prepare the LNP. Here we propose to use neutron reflectometry in combination with isotopic contrast variation to determine the extent of insertion of beta-sitosterol and exchange between LNPs (prepared using the cationic lipid, MC3) with model early endosomal (EEM) membranes at sub-phase pH’s of 5.5 and 6.5. The results obtained here will be extremely important in the design of improved LNPs that can escape the endosome at an early stage with their payload intact and able to exert its effect in the cytosol of the cell.
DOI: 10.5286/isis.e.rb2420451
title: Investigation of Spin-excitation and Polaron hopping of a room temperature magnetodielectric system, NiNb2O6

description: The NiNb2O6 system presents numerous intriguing phenomena across various physics domains, including short-range magnetic characteristics above the ordering temperature, a remarkable room temperature giant magnetoelectric effect, spin-lattice coupling, and single-ion anisotropy attributable to the versatile ground state of the magnetic Ni-ion. Thermal activation leads to polaron hopping between Ni+1-to-Ni+2 ions, suggesting robust electron-phonon interactions and highlighting the involvement of lattice vibrations in charge carrier mobility. In order to comprehend the exotic magnetic ground state behavior exhibited by this system, our intention is to conduct inelastic neutron scattering experiments in MARI instrument.
DOI: 10.5286/isis.e.rb2420451-1
title: Investigation of Spin-excitation and Polaron hopping of a room temperature magnetodielectric system, NiNb2O6

description: The NiNb2O6 system presents numerous intriguing phenomena across various physics domains, including short-range magnetic characteristics above the ordering temperature, a remarkable room temperature giant magnetoelectric effect, spin-lattice coupling, and single-ion anisotropy attributable to the versatile ground state of the magnetic Ni-ion. Thermal activation leads to polaron hopping between Ni+1-to-Ni+2 ions, suggesting robust electron-phonon interactions and highlighting the involvement of lattice vibrations in charge carrier mobility. In order to comprehend the exotic magnetic ground state behavior exhibited by this system, our intention is to conduct inelastic neutron scattering experiments in MARI instrument.
DOI: 10.3535/0d3-76c-whh
title: Salix longifolia Muhl.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/gl4-djd-n3d
title: Heteranthera reniformis Ruiz & Pav.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220676-2
title: Using muons to investigate the relationship between magnetism and kagome superconductivity in YRu3Si2

description: Newly discovered kagome superconductors have the potential to provide a direct link between magnetism, topology, and their superconducting properties. For example, AV3Sb5 (A = K, Rb, Cs) contain unconventional chiral charge order which breaks time-reversal symmetry, which directly influences the conventionality of the superconducting state. We propose to study a polycrystalline sample of the kagome superconductor YRu3Si2 using muons to search for time-reversal symmetry breaking in both the superconducting state and a possible higher temperature charge order state. We also propose to study the mixed state using muons to investigate the superconducting pairing state.
DOI: 10.5286/isis.e.rb2420020
title: Controlling Chiral Spin Texture in RE:TM Ferrimagnetic Alloys Thin-Films by Engineering the Vertical Compositional Distribution

description: Controlling chiral spin texture has garnered significant research attention in spintronics. Recent study suggests the Dzyaloshinskii-Moriya Interaction (DMI) can be manipulated to stabilize chirality by introducing non-uniformity via compositionally-grading in amorphous rare earth (RE): transitional metal (TM) ferrimagnetic thin films. These alloys exhibit magnetization compensation points, where the net magnetization or angular momentum vanishes due to competition between opposing RE and TM moments. Near compensation a substantial increase in spin-orbit torque (SOT) efficiency and the occurrence of perpendicular magnetic anisotropy (PMA) have been observed. PMA is observed only within a certain composition range and a compositional gradient enables a transition from in-plane to out-of-plane magnetization, yielding an exchanged couple configuration of magnetic moments and also a chiral spin texture within the layer. A key aim of this experiment is to use the unique capabilities of PNR in both the non-spin-flip (NSF) and spin-flip (SF) modes for magnetic and structural depth profiling to effectively map the spatial distribution of magnetization through the thickness of designed-in Gd alloy gradients to map the chiral spin texture. This will complement and complete our recent studies of RE:TM graded alloy using resonant x-ray studies from the ESRF.
DOI: 10.5286/isis.e.rb2420020-1
title: Controlling Chiral Spin Texture in RE:TM Ferrimagnetic Alloys Thin-Films by Engineering the Vertical Compositional Distribution

description: Controlling chiral spin texture has garnered significant research attention in spintronics. Recent study suggests the Dzyaloshinskii-Moriya Interaction (DMI) can be manipulated to stabilize chirality by introducing non-uniformity via compositionally-grading in amorphous rare earth (RE): transitional metal (TM) ferrimagnetic thin films. These alloys exhibit magnetization compensation points, where the net magnetization or angular momentum vanishes due to competition between opposing RE and TM moments. Near compensation a substantial increase in spin-orbit torque (SOT) efficiency and the occurrence of perpendicular magnetic anisotropy (PMA) have been observed. PMA is observed only within a certain composition range and a compositional gradient enables a transition from in-plane to out-of-plane magnetization, yielding an exchanged couple configuration of magnetic moments and also a chiral spin texture within the layer. A key aim of this experiment is to use the unique capabilities of PNR in both the non-spin-flip (NSF) and spin-flip (SF) modes for magnetic and structural depth profiling to effectively map the spatial distribution of magnetization through the thickness of designed-in Gd alloy gradients to map the chiral spin texture. This will complement and complete our recent studies of RE:TM graded alloy using resonant x-ray studies from the ESRF.
DOI: 10.34816/ifao.archives.232870
title: SAQQARA_nb_1994_03348

description: Référence : nb_1994_03348<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/5df-hz0-bg6
title: Poa secunda J.Presl

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/z49-w9r-pnm
title: Melica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220676
title: Using muons to investigate the relationship between magnetism and kagome superconductivity in YRu3Si2
DOI: 10.5286/isis.e.rb2270024-1
title: Magnetic ground state of honeycomb magnet BaCo2(P1-xVx)2O8

description: The Kitaev model, which deals with S = 1/2 spins connected by bond-dependent spin-spin interaction on a honeycomb lattice, has been paid much attention because of its remarkable prediction of the ground state such as a spin-liquid state with gapless excitation of Majorana fermions. Recently, honeycomb cobalt oxide BaCo2(P1-xVx)2O8 (BCPVO) is promising as a new candidate for realizing Kitaev physics. In a previous study, a spin-glass (SG) transition is reported for x = 0.15 and 0.20 samples, whereas an antiferromagnetic (AF) transition occurs in x &gt; 0.30 samples. However, our detailed dc magnetization experiment suggests that the reentrant SG and AF transitions is expected for x &gt; 0.30 samples. This proposed muon spin rotation/relaxation experiment is the first investigation of the ground state of BCPVO by local spin probe and it will clarify the interesting ground state of BCPVO.
DOI: 10.5286/isis.e.rb2490267-1
title: Structure - composition relationships in Aurivillius phases
DOI: 10.15468/dl.4gcgyw
title: Occurrence Download

description: A dataset containing 4671 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Pemphis acidula J.R.Forst. & G.Forst."
 ]
}

 The dataset includes 4671 records from 148 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109285-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.21233/n3v79m
title: Sand pollen surface sample dataset

description: Raw data for the Sand 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: 10.3535/3ca-gmk-r0h
title: Poa L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/f2w-tyf-zeb
title: Rotala ramosior (L.) Koehne

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2270024
title: Magnetic ground state of honeycomb magnet BaCo2(P1-xVx)2O8

description: The Kitaev model, which deals with S = 1/2 spins connected by bond-dependent spin-spin interaction on a honeycomb lattice, has been paid much attention because of its remarkable prediction of the ground state such as a spin-liquid state with gapless excitation of Majorana fermions. Recently, honeycomb cobalt oxide BaCo2(P1-xVx)2O8 (BCPVO) is promising as a new candidate for realizing Kitaev physics. In a previous study, a spin-glass (SG) transition is reported for x = 0.15 and 0.20 samples, whereas an antiferromagnetic (AF) transition occurs in x &gt; 0.30 samples. However, our detailed dc magnetization experiment suggests that the reentrant SG and AF transitions is expected for x &gt; 0.30 samples. This proposed muon spin rotation/relaxation experiment is the first investigation of the ground state of BCPVO by local spin probe and it will clarify the interesting ground state of BCPVO.
DOI: 10.5286/isis.e.rb2420161
title: Neutron scattering study on K2Co2TeO6, a Kitaev interactions candidate

description: Since the quantum spin liquid (QSL) state may reveal the microscopic origin of high-transition-temperature superconductivity and serve as a novel platform to perform quantum computation, the experimental realization of a QSL is a long-sought goal in condensed matter physics. One of the most promising candidates for the QSL phase is the Kitaev model based on anisotropic interactions among spin-1/2 particles on a honeycomb lattice. Recently, our collaborators have successfully synthesized a new compound, K2Co2TeO6 in the P63/mcm space group (No. 193) with lattice constants a = 5.2099(4) Å and c = 12.6214(17) Å, in which Co2+ ions form a honeycomb sublattice in each Co-Te layer. This experiment aims to determine the exchange couplings in the Hamiltonian by fitting the magnon spectra and determine if the exchange couplings are consistent with Kitaev interactions. We will fit the spin wave in K2Co2TeO6 and try to extract the exchange couplings, which will help to determine the magnitude of Kitaev interaction in our future field experiments. It will also help unveil the mechanism of the complex magnetism in K2Co2TeO6.
DOI: 10.5286/isis.e.rb2420161-1
title: Neutron scattering study on K2Co2TeO6, a Kitaev interactions candidate

description: Since the quantum spin liquid (QSL) state may reveal the microscopic origin of high-transition-temperature superconductivity and serve as a novel platform to perform quantum computation, the experimental realization of a QSL is a long-sought goal in condensed matter physics. One of the most promising candidates for the QSL phase is the Kitaev model based on anisotropic interactions among spin-1/2 particles on a honeycomb lattice. Recently, our collaborators have successfully synthesized a new compound, K2Co2TeO6 in the P63/mcm space group (No. 193) with lattice constants a = 5.2099(4) Å and c = 12.6214(17) Å, in which Co2+ ions form a honeycomb sublattice in each Co-Te layer. This experiment aims to determine the exchange couplings in the Hamiltonian by fitting the magnon spectra and determine if the exchange couplings are consistent with Kitaev interactions. We will fit the spin wave in K2Co2TeO6 and try to extract the exchange couplings, which will help to determine the magnitude of Kitaev interaction in our future field experiments. It will also help unveil the mechanism of the complex magnetism in K2Co2TeO6.
DOI: 10.34816/ifao.archives.232871
title: SAQQARA_nb_1994_03349

description: Référence : nb_1994_03349<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/aza-cwx-d1k
title: Ceanothus americanus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/jw6-mz4-z56
title: Coriaria ruscifolia L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2420397
title: Loop-Magnetic Structure of Geometrically Frustrated CsW2O6

description: The triad of geometric frustration, competing electronic interactions, and strong spin-orbit coupling provides a uniquely fertile basis for the emergence of unconventional and intriguing quantum phases. While frustration leads to a highly degenerate physical state which is often unstable against external perturbation, the tuneability of electronic interactions as well as the intermixing of charge, spin, and orbital degrees of freedom provide an exceptionally rich toolset to experimentalist.
In this regard, the pyrochlore system CsW2O6 recently emerged as a particularly promising candidate. At ambient conditions, CsW2O6 shows no sign of electronic order, but displays signatures of charge frustration on the W sublattice. Towards lower temperatures, the frustration is (partially) lifted across a bad metal-to-insulator transition, and the system displays a weak diamagnetic response. A previous structural study suggested the formation of charge order on regular trimers, whilst a recent theoretical study proposed the formation of large orbital molecules consisting of up to 10 W atoms each, including a peculiar chiral magnetic loop structure, due to strong spin-orbit coupling. 
This proposal builds upon a previous Neutron powder diffraction experiment which discovered first evidence of the predicted magnetic loop structure.
The aim of this proposal is to elucidate this unique magnetic ordering using single crystal Neutron diffraction, e.g. to identify non-collinear magnetic order.
DOI: 10.5286/isis.e.rb2420397-1
title: Loop-Magnetic Structure of Geometrically Frustrated CsW2O6

description: The triad of geometric frustration, competing electronic interactions, and strong spin-orbit coupling provides a uniquely fertile basis for the emergence of unconventional and intriguing quantum phases. While frustration leads to a highly degenerate physical state which is often unstable against external perturbation, the tuneability of electronic interactions as well as the intermixing of charge, spin, and orbital degrees of freedom provide an exceptionally rich toolset to experimentalist.
In this regard, the pyrochlore system CsW2O6 recently emerged as a particularly promising candidate. At ambient conditions, CsW2O6 shows no sign of electronic order, but displays signatures of charge frustration on the W sublattice. Towards lower temperatures, the frustration is (partially) lifted across a bad metal-to-insulator transition, and the system displays a weak diamagnetic response. A previous structural study suggested the formation of charge order on regular trimers, whilst a recent theoretical study proposed the formation of large orbital molecules consisting of up to 10 W atoms each, including a peculiar chiral magnetic loop structure, due to strong spin-orbit coupling. 
This proposal builds upon a previous Neutron powder diffraction experiment which discovered first evidence of the predicted magnetic loop structure.
The aim of this proposal is to elucidate this unique magnetic ordering using single crystal Neutron diffraction, e.g. to identify non-collinear magnetic order.
DOI: 10.34816/ifao.archives.232872
title: SAQQARA_nb_1994_03350

description: Référence : nb_1994_03350<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/0jp-8qj-tzd
title: Phalaris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/zhl-9zg-z77
title: Heteranthera limosa (Sw.) Willd.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2420185
title: Visualisation of water dynamics in heterogeneously perforated gas diffusion layers-based polymer electrolyte fuel cells using neutron radiography

description: Contemporary society tackles the intertwined challenges of energy sustainability and environmental preservation. Polymer electrolyte fuel cells (PEFCs) have the potential to be a vital technology in a green, electricity-based energy landscape but currently suffer from intrinsic water management problems. The proposed heterogeneously perforated gas diffusion layers serve as a simple and effective means of achieving reliable PEFC operation at high current densities. However, an in-depth study of the water dynamics within this novel PEFC has not been established. This proposal aims to use the unique benefits of IMAT instruments to provide the first-ever comparison of heterogeneously perforated GDLs and those with homogenous perforations and non-perforated GDLs, synchronising with advanced thermal-electrical mapping. This could significantly and broadly impact academia, R&D, and manufacturers of fuel cell systems.