cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2510072
title: Modelling the dynamics of the lower mantle, an INS study on CaTiO3

description: The travel times of seismic waves through Earth’s interior provide one of the few direct constraints on the physical properties of mantle rocks. If carefully compared with experimental and computational measurements of the elastic properties of minerals this data may be interpreted in terms of mantle mineralogy, chemistry and temperature; information that is not otherwise directly attainable. We have performed TAS measurements of the acoustic velocity in CaTiO3, an analogue for the third most abundant mineral in the lower mantle and found significant anomalies in the vicinity of the structural phase transitions. We now wish to map out the full vibrational spectrum using MERLIN to try to understand their physical origin.
DOI: 10.5286/isis.e.rb2510358
title: Nuancing ancient Maya cuisine through the non-invasive study of organic amorphous carbonized objects

description: The non-destructive nature of neutron imaging and diffraction makes it a key technique to image archaeological materials. Our experiments focus on foods processed by the ancient Maya living in the Lowlands and the Mexican Highlands at Teotihuacan during the Classic period (AD 250-900), when significant socio-political changes caused by allochthonous migrations occurred. Imaging of millimetric amorphous carbonized objects (ACOs), the relics of complex food preparations and the food replicas (made using plants available to the ancient Maya), will provide new and never before published information on the ingredients used and the way in which foods were prepared. Our results will provide new data on ancient Maya cuisine, but also increase scholar’s awareness to the informative value of these often-overlooked materials, conduce to upgrading the pipeline from the field to the laboratory, and revising conservation protocols. The aim of this proposal is to use the tomograph IMAT at ISIS to reveal the presence of organic materials within these porosities, which might be invisible to X-rays.
DOI: 10.5286/isis.e.rb2510358-1
title: Nuancing ancient Maya cuisine through the non-invasive study of organic amorphous carbonized objects

description: The non-destructive nature of neutron imaging and diffraction makes it a key technique to image archaeological materials. Our experiments focus on foods processed by the ancient Maya living in the Lowlands and the Mexican Highlands at Teotihuacan during the Classic period (AD 250-900), when significant socio-political changes caused by allochthonous migrations occurred. Imaging of millimetric amorphous carbonized objects (ACOs), the relics of complex food preparations and the food replicas (made using plants available to the ancient Maya), will provide new and never before published information on the ingredients used and the way in which foods were prepared. Our results will provide new data on ancient Maya cuisine, but also increase scholar’s awareness to the informative value of these often-overlooked materials, conduce to upgrading the pipeline from the field to the laboratory, and revising conservation protocols. The aim of this proposal is to use the tomograph IMAT at ISIS to reveal the presence of organic materials within these porosities, which might be invisible to X-rays.
DOI: 10.15468/dl.5dwvfz
title: Occurrence Download

description: A dataset containing 41 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Rosa glabrifolia C.A.Mey. ex Rupr.",
 "Country is Latvia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 41 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109294-250525065834625/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.232947
title: SAQQARA_nb_1994_06005

description: Référence : nb_1994_06005<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/n1w-c1h-gge
title: Stellaria alsine Grimm

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/r5c-g12-48k
title: Satureja hortensis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2400085
title: Polarized neutron reflectivity of interfacial magnetism in PtTe2/altermagnetic CrSb

description: We propose to measure time-reversal symmetry breaking in altermagnetic heterostructures incorporating CrSb and the Dirac semimetal PtTe2. These heterostructures exhibit a switchable anomalous Hall effect near room-temperature in conjunction with vanishingly small net magnetzation, and are consequently extremely promising for low-energy, high-efficiency memory applications. PNR is critical to understanding the origin of this effect and differentiating between magnetic proximity effects and altermagnetic spin accumulation.
DOI: 10.5286/isis.e.rb2400085-1
title: Polarized neutron reflectivity of interfacial magnetism in PtTe2/altermagnetic CrSb

description: We propose to measure time-reversal symmetry breaking in altermagnetic heterostructures incorporating CrSb and the Dirac semimetal PtTe2. These heterostructures exhibit a switchable anomalous Hall effect near room-temperature in conjunction with vanishingly small net magnetzation, and are consequently extremely promising for low-energy, high-efficiency memory applications. PNR is critical to understanding the origin of this effect and differentiating between magnetic proximity effects and altermagnetic spin accumulation.
DOI: 10.5286/isis.e.rb2420052-1
title: Investigation of incommensurate structures in GdCo2B2

description: GdCo2B2 is a magnetocaloric material which is currently being developed for use in the hydrogen liquefaction process. It is an antiferromagnetic magnetocaloric material which exhibits four transitions in a narrow temperature region. While these transitions are thought to play a major role as part of the mechanism of the magnetocaloric effect, the magnetic structures are not yet understood. 
Recent high-energy neutron diffraction measurements indicated the presence of several complex incommensurate structures in the system, which could potentially be related to Skyrmions. Several propagation vectors are possible, but it has not yet been possible to differentiate between the various structures. To identify the propagation vectors for the various structures it is proposed to access the (000) + k reflections. These reflections, which pattern simulations indicate are present at large d-spacings of up to 60 Å, can be measured on the instrument WISH by operating it in the double frame mode. As the material contains highly absorbing elements, a test run was done using WISH to confirm the viability of the experiment. By mounting the sample in reflection mode, the paramagnetic system was successfully recovered. Three days of beamtime are requested to measure all of the complex magnetic structures of this system using the reflection and double frame modes on WISH.
DOI: 10.3535/0jz-ash-16s
title: Stachys sylvatica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/xf8-gb4-tbw
title: Thymus vulgaris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2420052
title: Investigation of incommensurate structures in GdCo2B2

description: GdCo2B2 is a magnetocaloric material which is currently being developed for use in the hydrogen liquefaction process. It is an antiferromagnetic magnetocaloric material which exhibits four transitions in a narrow temperature region. While these transitions are thought to play a major role as part of the mechanism of the magnetocaloric effect, the magnetic structures are not yet understood. 
Recent high-energy neutron diffraction measurements indicated the presence of several complex incommensurate structures in the system, which could potentially be related to Skyrmions. Several propagation vectors are possible, but it has not yet been possible to differentiate between the various structures. To identify the propagation vectors for the various structures it is proposed to access the (000) + k reflections. These reflections, which pattern simulations indicate are present at large d-spacings of up to 60 Å, can be measured on the instrument WISH by operating it in the double frame mode. As the material contains highly absorbing elements, a test run was done using WISH to confirm the viability of the experiment. By mounting the sample in reflection mode, the paramagnetic system was successfully recovered. Three days of beamtime are requested to measure all of the complex magnetic structures of this system using the reflection and double frame modes on WISH.
DOI: 10.5286/isis.e.rb2510249
title: Local structure of the layered oxysulfide Sr2MnO2Cu3.5S3

description: This is a proposal to probe the local structure in the layered oxysulfide, Sr2MnO2Cu3.5S3 in particular to probe the local Mn environment for possible Mn2+/Mn3+ charge order and to model the variable temperature behaviour of the copper sulfide layers which have Cu+ ions distributed over a range of sites. This compound is one of a series being probed as a potential thermoelectric material and a full understanding of the disorder in the sulfide layer and the influence of the structure of the manganese oxide layers on the electronic properties will be key to full understanding of the physical properties.
DOI: 10.5286/isis.e.rb2510249-1
title: Local structure of the layered oxysulfide Sr2MnO2Cu3.5S3

description: This is a proposal to probe the local structure in the layered oxysulfide, Sr2MnO2Cu3.5S3 in particular to probe the local Mn environment for possible Mn2+/Mn3+ charge order and to model the variable temperature behaviour of the copper sulfide layers which have Cu+ ions distributed over a range of sites. This compound is one of a series being probed as a potential thermoelectric material and a full understanding of the disorder in the sulfide layer and the influence of the structure of the manganese oxide layers on the electronic properties will be key to full understanding of the physical properties.
DOI: 10.34816/ifao.archives.232948
title: SAQQARA_nb_1994_06006

description: Référence : nb_1994_06006<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/d38-pe2-47e
title: Lamium purpureum L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/xl2-391-jn7
title: Scutellaria galericulata L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2270015
title: Magnetic phase transitions in Heusler compounds Fe3-xMnxSi
DOI: 10.5286/isis.e.rb2270015-3
title: Magnetic phase transitions in Heusler compounds Fe3-xMnxSi

description: Fe3-xMnxSi has been studied for a long time because of its unusual magnetic properties and complex magnetic phase diagrams. Fe3-xMnxSi (0.7 &lt; x &lt; 1.7) was known to exhibit a ferromagnetic transition, and at a lower temperature another transition to a phase with antiferromagnetic components. Recently we found that when x=1.7 another antiferromagnetic transition occurs at an even lower temperature, that is, there are three magnetic transitions. The two antiferromagnetic transition temperatures have different dependence on magnetic field. Therefore, these phases possibly have unusual magnetic structures and properties, as observed in other Mn-based antiferromagnetic compounds. In this study we will investigate the nature of the transitions and the magnetic phases using muSR measurements. This will reveal peculiar properties of the transitions and antiferromagnetic phases.
DOI: 10.5286/isis.e.rb2410307-3
title: Develeopment of the machine-learning data analysis for muSR

description: The higher muon statistics is important to achieve the high-quality data. But when we slice the run time to be in a short time to investigate the time dependence of the dynamics, and when we use tiny samples, the data statics becomes very low. We are going to develop a new way to use those those low-static data by using the machine-learning technique. In order to trigger this new project, we propose to gather many low-static data sets in order to train machine-leanring program circuits.
DOI: 10.3535/q4q-0rw-b4q
title: Myosotis scorpioides L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/v4s-yf8-vgf
title: Stachys palustris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410307
title: Develeopment of the machine-learning data analysis for muSR

description: The higher muon statistics is important to achieve the high-quality data. But when we slice the run time to be in a short time to investigate the time dependence of the dynamics, and when we use tiny samples, the data statics becomes very low. We are going to develop a new way to use those those low-static data by using the machine-learning technique. In order to trigger this new project, we propose to gather many low-static data sets in order to train machine-leanring program circuits.
DOI: 10.5286/isis.e.rb2420116
title: Understanding methanol dehydration for one-pot formation of green maritime fuel

description: Moving forward into the environmentally conscious era, an increasing number of everyday chemicals will be sourced from CO2-based feedstocks. Some areas will utilise hydrogen-based technologies for future fuel demand; however, this is currently not feasible for the maritime industry, due to the low energy density per unit volume of hydrogen, and lack of infrastructure. Instead fuels such as dimethyl ether (DME), are needed that can be seamlessly incorporated into existing infrastructure and are more sustainable than existing fossil fuels.[1] We have recently shown proof-of-concept for sustainable DME production (Figure 1), with a one-pot processes from CO2 and H2, through a methanol (MeOH) intermediate, using a Cu and ZnO-decorated SAPO-11 zeotype bifunctional catalyst. In this proposal we will explore the influence of doping Cu and ZnO on SAPO-11 for the dehydration of MeOH to optimise DME production. Uniquely this work will be performed on an activated catalyst, mimicking reaction conditions.
DOI: 10.5286/isis.e.rb2420116-1
title: Understanding methanol dehydration for one-pot formation of green maritime fuel

description: Moving forward into the environmentally conscious era, an increasing number of everyday chemicals will be sourced from CO2-based feedstocks. Some areas will utilise hydrogen-based technologies for future fuel demand; however, this is currently not feasible for the maritime industry, due to the low energy density per unit volume of hydrogen, and lack of infrastructure. Instead fuels such as dimethyl ether (DME), are needed that can be seamlessly incorporated into existing infrastructure and are more sustainable than existing fossil fuels.[1] We have recently shown proof-of-concept for sustainable DME production (Figure 1), with a one-pot processes from CO2 and H2, through a methanol (MeOH) intermediate, using a Cu and ZnO-decorated SAPO-11 zeotype bifunctional catalyst. In this proposal we will explore the influence of doping Cu and ZnO on SAPO-11 for the dehydration of MeOH to optimise DME production. Uniquely this work will be performed on an activated catalyst, mimicking reaction conditions.
DOI: 10.34816/ifao.archives.232949
title: SAQQARA_nb_1994_06014

description: Référence : nb_1994_06014<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/xk1-sdp-v3b
title: Valeriana fonkii Phil.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2420112-1
title: A Fully Asymmetric Protein-Containing Gram-Negative bacterial Outer membrane Model

description: Due to antimicrobial resistance, bacterial infections, specifically those due to Gram-negative (GN) bacteria, represent a serious danger to human health. To combat infections by these pathogens, there is an urgent need to develop new antibiotics. The GN bacterial outer membrane (OM), with its unique architecture provides bacteria with additional protection against many antibiotics and has long been a target for the few remaining broad-spectrum antibiotics. Model membranes are a valuable tool for gaining a deeper understanding of the behaviour of the GN OM, and when combined with powerful characterisation techniques such as neutron reflectometry can been used to provide precise complex structural information into the mechanisms of action of new and existing antibiotics. Herein we propose to continue developing a novel route to obtain fully asymmetric, protein containing OM model systems. As such we will develop one of the most physiologically relevant models of the GN OM currently available.
DOI: 10.5286/isis.e.rb2510115
title: Crystal Field Excitations in the defect-fluorite Ho2Hf2O7

description: Defining single-ion properties is essential to fully understand the physics in rare-earth pyrochlore family of compounds, especially in the vicinity of the ground state. We propose to measure the Crystalline Electric Field (CEF) excitations of Ho2Hf2O7. This compound belongs to the defect-fluorite group (Fm-3m), which exhibits inherent structural disorder. Ho2Ti2O7 is a canonical dipolar spin-ice with a doublet ground state protected by a sizable 200K gap to the first excited state. In contrast to its titanate counterpart, Ho2Hf2O7 remains strongly dynamic down to 0.5K and has a large antiferromagnetic exchange coupling. Magnetic frustration is still present in the defect-fluorite unit cell; therefore, the motivation to this proposal is to explain these changes by obtaining the CEF energy level scheme.
DOI: 10.5286/isis.e.rb2510115-1
title: Crystal Field Excitations in the defect-fluorite Ho2Hf2O7

description: Defining single-ion properties is essential to fully understand the physics in rare-earth pyrochlore family of compounds, especially in the vicinity of the ground state. We propose to measure the Crystalline Electric Field (CEF) excitations of Ho2Hf2O7. This compound belongs to the defect-fluorite group (Fm-3m), which exhibits inherent structural disorder. Ho2Ti2O7 is a canonical dipolar spin-ice with a doublet ground state protected by a sizable 200K gap to the first excited state. In contrast to its titanate counterpart, Ho2Hf2O7 remains strongly dynamic down to 0.5K and has a large antiferromagnetic exchange coupling. Magnetic frustration is still present in the defect-fluorite unit cell; therefore, the motivation to this proposal is to explain these changes by obtaining the CEF energy level scheme.
DOI: 10.3535/9at-wmf-raj
title: Lomatia ferruginea (Cav.) R. Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/em5-939-9af
title: Succisa pratensis Moench

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2420112
title: A Fully Asymmetric Protein-Containing Gram-Negative bacterial Outer membrane Model

description: Due to antimicrobial resistance, bacterial infections, specifically those due to Gram-negative (GN) bacteria, represent a serious danger to human health. To combat infections by these pathogens, there is an urgent need to develop new antibiotics. The GN bacterial outer membrane (OM), with its unique architecture provides bacteria with additional protection against many antibiotics and has long been a target for the few remaining broad-spectrum antibiotics. Model membranes are a valuable tool for gaining a deeper understanding of the behaviour of the GN OM, and when combined with powerful characterisation techniques such as neutron reflectometry can been used to provide precise complex structural information into the mechanisms of action of new and existing antibiotics. Herein we propose to continue developing a novel route to obtain fully asymmetric, protein containing OM model systems. As such we will develop one of the most physiologically relevant models of the GN OM currently available.
DOI: 10.5286/isis.e.rb2420514
title: Molecular Distribution Across the Liquid-Liquid Phase Separation in Li-NH3-MeNH2

description: We request 5 days on VESUVIO to determine the relative stoichiometry and density of a phase-separated liquid-liquid system, Li-ND3-CH3NH2. This experiment is required to complete a study initiated by INS measurements on the MAPS spectrometer.
DOI: 10.5286/isis.e.rb2420514-1
title: Molecular Distribution Across the Liquid-Liquid Phase Separation in Li-NH3-MeNH2

description: We request 5 days on VESUVIO to determine the relative stoichiometry and density of a phase-separated liquid-liquid system, Li-ND3-CH3NH2. This experiment is required to complete a study initiated by INS measurements on the MAPS spectrometer.
DOI: 10.34816/ifao.archives.232950
title: SAQQARA_nb_1994_06015

description: Référence : nb_1994_06015<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/k88-1w3-p2d
title: Symphoricarpos albus (L.) K. Koch

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/rzp-vqy-2bk
title: Buglossoides arvensis (L.) I. M. Johnst.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310031
title: Probing the dynamics of anisole and guaiacol within Brønsted acidic zeolites for biomass conversion

description: Lignin is an abundant component of biomass that can be catalytically upgraded into fuels and value-added chemicals. Due to the importance of developing efficient lignin conversion processes, the mobility of anisole and guaiacol (model lignin monomers with methoxyl functionalities) in the promising zeolite catalysts (HY, HBEA and HZSM5) with varying pore sizes will be studied using QENS, to complement a previous QENS study on cresol isomers with hydroxyl functionalities in HY and HBEA (RB2000235). Experimental mobility data such as diffusion coefficients and activation energies will help validate classical computational forcefields. Changes in the molecular shape and functionalities can significantly impact their dynamics, especially through shape-selective catalysts. Fundamental studies into their mobility upon confinement, a rate-limiting step in their catalysis, will contribute greatly to catalyst development for lignin depolymerisation.
DOI: 10.5286/isis.e.rb2310031-1
title: Probing the dynamics of anisole and guaiacol within Brønsted acidic zeolites for biomass conversion

description: Lignin is an abundant component of biomass that can be catalytically upgraded into fuels and value-added chemicals. Due to the importance of developing efficient lignin conversion processes, the mobility of anisole and guaiacol (model lignin monomers with methoxyl functionalities) in the promising zeolite catalysts (HY, HBEA and HZSM5) with varying pore sizes will be studied using QENS, to complement a previous QENS study on cresol isomers with hydroxyl functionalities in HY and HBEA (RB2000235). Experimental mobility data such as diffusion coefficients and activation energies will help validate classical computational forcefields. Changes in the molecular shape and functionalities can significantly impact their dynamics, especially through shape-selective catalysts. Fundamental studies into their mobility upon confinement, a rate-limiting step in their catalysis, will contribute greatly to catalyst development for lignin depolymerisation.