cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5517/ccvg1p0
title: CCDC 788072: Experimental Crystal Structure Determination

description: Related Article: Y.L.K.Tan, Weng Kee Leong|2011|J.Organomet.Chem.|696|2373|doi:10.1016/j.jorganchem.2011.02.031
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccvg1q1
title: CCDC 788073: Experimental Crystal Structure Determination

description: Related Article: Y.L.K.Tan, Weng Kee Leong|2011|J.Organomet.Chem.|696|2373|doi:10.1016/j.jorganchem.2011.02.031
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccw2p8w
title: CCDC 806938: Experimental Crystal Structure Determination

description: Related Article: S.Anezaki, Y.Yamaguchi, M.Asami|2011|J.Organomet.Chem.|696|2399|doi:10.1016/j.jorganchem.2011.03.001
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccw2p9x
title: CCDC 806939: Experimental Crystal Structure Determination

description: Related Article: S.Anezaki, Y.Yamaguchi, M.Asami|2011|J.Organomet.Chem.|696|2399|doi:10.1016/j.jorganchem.2011.03.001
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccvqgyy
title: CCDC 796171: Experimental Crystal Structure Determination

description: Related Article: Eun Seok Park, Ji Hae Park, Hoseop Yun, Bun Yeoul Lee|2011|J.Organomet.Chem.|696|2451|doi:10.1016/j.jorganchem.2011.03.014
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccvw4rl
title: CCDC 800660: Experimental Crystal Structure Determination

description: Related Article: Eun Seok Park, Ji Hae Park, Hoseop Yun, Bun Yeoul Lee|2011|J.Organomet.Chem.|696|2451|doi:10.1016/j.jorganchem.2011.03.014
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cctlmbb
title: CCDC 762672: Experimental Crystal Structure Determination

description: Related Article: G.Albertin, S.Antoniutti, J.Castro, S.Paganelli|2010|J.Organomet.Chem.|695|2142|doi:10.1016/j.jorganchem.2010.05.028
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccvxlr2
title: CCDC 802055: Experimental Crystal Structure Determination

description: Related Article: Eun Seok Park, Ji Hae Park, Hoseop Yun, Bun Yeoul Lee|2011|J.Organomet.Chem.|696|2451|doi:10.1016/j.jorganchem.2011.03.014
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cctlmcc
title: CCDC 762673: Experimental Crystal Structure Determination

description: Related Article: G.Albertin, S.Antoniutti, J.Castro, S.Paganelli|2010|J.Organomet.Chem.|695|2142|doi:10.1016/j.jorganchem.2010.05.028
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv0xsj
title: CCDC 775458: Experimental Crystal Structure Determination

description: Related Article: J.Jenter, G.Eickerling, P.W.Roesky|2010|J.Organomet.Chem.|695|2756|doi:10.1016/j.jorganchem.2010.07.012
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv0xtk
title: CCDC 775459: Experimental Crystal Structure Determination

description: Related Article: J.Jenter, G.Eickerling, P.W.Roesky|2010|J.Organomet.Chem.|695|2756|doi:10.1016/j.jorganchem.2010.07.012
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv112z
title: CCDC 775560: Experimental Crystal Structure Determination

description: Related Article: J.Jenter, G.Eickerling, P.W.Roesky|2010|J.Organomet.Chem.|695|2756|doi:10.1016/j.jorganchem.2010.07.012
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.15468/dl.k6xzmz
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Sphenodontia, Crocodylia, Squamata, Testudines)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1980",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "Geometry POLYGON((0 -45,7.5 -45,7.5 -37.5,0 -37.5,0 -45))"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046308-251009101135966/datasets/export for details.
DOI: 10.5517/ccv0zvn
title: CCDC 775522: Experimental Crystal Structure Determination

description: Related Article: T.K.Panda, C.G.Hrib, P.G.Jones, M.Tamm|2010|J.Organomet.Chem.|695|2768|doi:10.1016/j.jorganchem.2010.06.028
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv0zwp
title: CCDC 775523: Experimental Crystal Structure Determination

description: Related Article: T.K.Panda, C.G.Hrib, P.G.Jones, M.Tamm|2010|J.Organomet.Chem.|695|2768|doi:10.1016/j.jorganchem.2010.06.028
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv0zxq
title: CCDC 775524: Experimental Crystal Structure Determination

description: Related Article: T.K.Panda, C.G.Hrib, P.G.Jones, M.Tamm|2010|J.Organomet.Chem.|695|2768|doi:10.1016/j.jorganchem.2010.06.028
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv0zyr
title: CCDC 775525: Experimental Crystal Structure Determination

description: Related Article: T.K.Panda, C.G.Hrib, P.G.Jones, M.Tamm|2010|J.Organomet.Chem.|695|2768|doi:10.1016/j.jorganchem.2010.06.028
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccvc07f
title: CCDC 785144: Experimental Crystal Structure Determination

description: Related Article: Jianhua Cheng, K.Saliu, M.J.Ferguson, R.McDonald, J.Takats|2010|J.Organomet.Chem.|695|2696|doi:10.1016/j.jorganchem.2010.08.020
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccvc08g
title: CCDC 785145: Experimental Crystal Structure Determination

description: Related Article: Jianhua Cheng, K.Saliu, M.J.Ferguson, R.McDonald, J.Takats|2010|J.Organomet.Chem.|695|2696|doi:10.1016/j.jorganchem.2010.08.020
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccvc09h
title: CCDC 785146: Experimental Crystal Structure Determination

description: Related Article: Jianhua Cheng, K.Saliu, M.J.Ferguson, R.McDonald, J.Takats|2010|J.Organomet.Chem.|695|2696|doi:10.1016/j.jorganchem.2010.08.020
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cct0r0k
title: CCDC 745488: Experimental Crystal Structure Determination

description: Related Article: J.M.Bakker, L.J.Barbour, G.B.Deacon, P.C.Junk, G.O.Lloyd, J.W.Steed|2010|J.Organomet.Chem.|695|2720|doi:10.1016/j.jorganchem.2010.08.007
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cct0r1l
title: CCDC 745489: Experimental Crystal Structure Determination

description: Related Article: J.M.Bakker, L.J.Barbour, G.B.Deacon, P.C.Junk, G.O.Lloyd, J.W.Steed|2010|J.Organomet.Chem.|695|2720|doi:10.1016/j.jorganchem.2010.08.007
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv1130
title: CCDC 775561: Experimental Crystal Structure Determination

description: Related Article: A.R.Petrov, O.Thomas, K.Harms, K.A.Rufanov, J.Sundermeyer|2010|J.Organomet.Chem.|695|2738|doi:10.1016/j.jorganchem.2010.09.042
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv1141
title: CCDC 775562: Experimental Crystal Structure Determination

description: Related Article: A.R.Petrov, O.Thomas, K.Harms, K.A.Rufanov, J.Sundermeyer|2010|J.Organomet.Chem.|695|2738|doi:10.1016/j.jorganchem.2010.09.042
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccv1152
title: CCDC 775563: Experimental Crystal Structure Determination

description: Related Article: A.R.Petrov, O.Thomas, K.Harms, K.A.Rufanov, J.Sundermeyer|2010|J.Organomet.Chem.|695|2738|doi:10.1016/j.jorganchem.2010.09.042
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.15468/dl.5yyzht
title: Occurrence Download

description: A dataset containing 513 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Amphibia",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "BasisOfRecord is one of (Human Observation, Specimen)",
 "Year is greater than or equal to 2000",
 "Geometry POLYGON ((-88.53266 16.28992, -88.53266 17.07218, -89.53266 17.07218, -89.53266 16.07218, -88.82035 16.07266, -88.81179 16.07831, -88.8065 16.08398, -88.80005 16.10036, -88.79431 16.10813, -88.78255 16.11829, -88.77019 16.12414, -88.76607 16.1261, -88.7549 16.12778, -88.75035 16.13025, -88.74649 16.13524, -88.74247 16.1517, -88.73667 16.15873, -88.73395 16.16695, -88.73836 16.17458, -88.74364 16.20446, -88.74355 16.21158, -88.74085 16.21727, -88.72522 16.23174, -88.71973 16.23396, -88.70431 16.23306, -88.69375 16.24117, -88.67443 16.24687, -88.66294 16.25382, -88.65401 16.24658, -88.64975 16.2463, -88.64687 16.24878, -88.64342 16.25699, -88.64626 16.26748, -88.64404 16.28039, -88.64279 16.28405, -88.62135 16.27273, -88.61338 16.26528, -88.59904 16.25521, -88.59315 16.25237, -88.57809 16.25835, -88.5755 16.2574, -88.57507 16.25464, -88.58044 16.24393, -88.57882 16.24139, -88.57475 16.24362, -88.56304 16.26478, -88.55849 16.26701, -88.54137 16.26906, -88.53491 16.27194, -88.53266 16.27633, -88.53266 16.28334, -88.533 16.2882, -88.53266 16.28992))"
 ]
}

 The dataset includes 513 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046306-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.m776ut
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Opuntia sulphurea",
 "HasCoordinate is true",
 "Country is Namibia"
 ]
}

 The dataset includes 10 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046309-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.16251053
title: Model output: CICE6-WIM 0.25-degree Antarctic sea ice data in response to cyclone activity

description: Data used to produce the results of Day, O'Farrell, Bennetts, "Model Assessment of Winter Extratropical Cyclone Short-Term Impacts on the Antarctic Marginal Ice Zone", 2025.
DOI: 10.15468/dl.h957wy
title: Occurrence Download

description: A dataset containing 108477 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Sphenodontia, Crocodylia, Squamata, Testudines)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1980",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "Geometry POLYGON((-127.5 37.5,-120 37.5,-120 45,-127.5 45,-127.5 37.5))"
 ]
}

 The dataset includes 108477 records from 50 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046283-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.16251054
title: Model output: CICE6-WIM 0.25-degree Antarctic sea ice data in response to cyclone activity

description: Data used to produce the results of Day, O'Farrell, Bennetts, "Model Assessment of Winter Extratropical Cyclone Short-Term Impacts on the Antarctic Marginal Ice Zone", 2025.
DOI: 10.15468/dl.j9r69y
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Sphenodontia, Crocodylia, Squamata, Testudines)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1980",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "Geometry POLYGON((-7.5 -45,0 -45,0 -37.5,-7.5 -37.5,-7.5 -45))"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046311-251009101135966/datasets/export for details.
DOI: 10.15468/dl.vzcnvc
title: Occurrence Download

description: A dataset containing 1071415 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 }
 ]
 },
 "TaxonKey is one of (Cymbopogon caesius, Lampranthus marginatus, Cephalophyllum curtophyllum, Tavaresia barklyi, Lysiosepalum hexandrum, Elodea nuttallii, Banksia shanklandiorum, Leionema hillebrandii, Ptilagrostiella kingii, Osteospermum auriculatum, Lampranthus subrotundus, Scabiosa austroafricana, Banksia squarrosa, Leionema equestre, Sidotheca trilobata, Ferocactus fordii, Trachyandra falcata, Leobordea esterhuyseniana, Trachyandra sabulosa, Bosistoa pentacocca, Moltkiopsis ciliata, Erica velatiflora, Erica angulosa, Erica similis, Gnephosis eriocarpa, Erica multiflexuosa, Laennecia confusa, Periptera punicea, Distimake palmeri, Salix ligulifolia, Trianthema clavatum, Cynanchum ellipticum, Origanum microphyllum, Crocus atticus, Cryptantha rostellata, Phylloscirpus boliviensis, Cryptantha longifolia, Strigosella behboudiana, Cryptantha macrocalyx, Odontarrhena euboea, Cryptantha dimorpha, Verbascum jordanicum, Elytraria imbricata, Crocus yataganensis, Crocus haussknechtii, Lobostemon spicatus, Aria edulis, Felicia quinquenervia, Cheirolophus teydis, Glia prolifera, Lessertia humilis, Erythranthe acutidens, Lewisia congdonii, Nymphaea kimberleyensis, Piper commutatum, Erythranthe montioides, Antidaphne punctulata, Zygophyllum minutistipulum, Valdesiana, Rhaponticum insigne, Vandellia aplectra, Madia gracilis, Phiambolia hallii, Caylusea hexagyna, Galium diffusoramosum, Orobanche gussoneana, Bornmuellera emarginata, Pentameris tysonii, Bornmuellera baldaccii, Calanthe sylvatica, Muhlenbergia pereilema, Pentameris aurea, Maireana rohrlachii, Lathyrus ochrus, Festucopsis serpentini, Lathyrus saxatilis, Aloinopsis rubrolineata, Muhlenbergia andina, Moricandia sinaica, Ornithogalum ulixis, Pentameris argentea, Maireana amoena, Dichanthium sericeum, Rorippa gigantea, Silene flos-cuculi, Cullen virens, Rorippa austriaca, Helictotrichon filifolium, Daucus virgatus, Rorippa palustris, Crataegus laevigata, Lophiolepis ferox, Chiliotrichum diffusum, Melolobium aethiopicum, Hymenogyne glabra, Calandrinia carolinii, Silene badaroi, Cylindropuntia lindsayi, Platycaulos anceps)",
 "Year is greater than or equal to 1950"
 ]
}

 The dataset includes 1071415 records from 3084 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046266-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.6084/m9.figshare.26322795.v1
title: Additional file 2 of Single-cell sequencing of facial adipose tissue unveils FKBP5 as a therapeutic target for facial infiltrating lipomatosis

description: Supplementary Material 2: Table S2. Primers used for quantitative PCR and lentivirus
DOI: 10.6084/m9.figshare.26322719
title: Additional file 1 of Single-cell sequencing of facial adipose tissue unveils FKBP5 as a therapeutic target for facial infiltrating lipomatosis

description: Supplementary Material 1: Table S1. Clinical information of patients with FIL and patients in control group
DOI: 10.6084/m9.figshare.26750501
title: Additional file 6 of Single-cell sequencing of facial adipose tissue unveils FKBP5 as a therapeutic target for facial infiltrating lipomatosis

description: Supplementary Material 6: Table S4: Differential expression genes in FIL and CON
DOI: 10.6084/m9.figshare.26750501.v1
title: Additional file 6 of Single-cell sequencing of facial adipose tissue unveils FKBP5 as a therapeutic target for facial infiltrating lipomatosis

description: Supplementary Material 6: Table S4: Differential expression genes in FIL and CON
DOI: 10.6084/m9.figshare.26750555
title: Additional file 3 of Metabolomics and transcriptomics combined with physiology reveal key metabolic pathway responses in tobacco roots exposed to NaHS

description: Supplementary Material 3.
DOI: 10.6084/m9.figshare.26750555.v1
title: Additional file 3 of Metabolomics and transcriptomics combined with physiology reveal key metabolic pathway responses in tobacco roots exposed to NaHS

description: Supplementary Material 3.
DOI: 10.6084/m9.figshare.26750558
title: Additional file 4 of Metabolomics and transcriptomics combined with physiology reveal key metabolic pathway responses in tobacco roots exposed to NaHS

description: Supplementary Material 4.