[ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/assertion", "@graph": [ { "@id": "https://w3id.org/delphi/resource/claim/buehler-2009-helical-networks-05", "http://purl.org/dc/terms/description": [ { "@value": "With W = 1.63 × 10⁻¹⁷ J to break one alpha-helix element and a mesh cross-section A = 1.2 × 10⁻¹⁷ m², the network's fracture surface energy is of the same order as that of silicon along <111>, while its elastic modulus (about 3 GPa for the alpha-helix) is far below silicon's 243 GPa." } ], "http://purl.org/dc/terms/type": [ { "@value": "mathematical-law" } ], "@type": [ "https://w3id.org/delphi/ontology/Claim" ], "http://www.w3.org/2000/01/rdf-schema#comment": [ { "@value": "Notation basis: W and A are in the text; the defining equation and the resulting value are images in the JATS and are missing from the vendored text. The factor 2 (two surfaces) is the standard definition; if the paper defines γ = W/A the value is 1.36 J m⁻². To be checked against the PDF before use." } ], "http://www.w3.org/2000/01/rdf-schema#label": [ { "@value": "Fracture surface energy of the alpha-helix network is comparable to silicon's" } ], "http://www.w3.org/2004/02/skos/core#notation": [ { "@value": "\\gamma = \\frac{W}{2A} \\approx \\frac{1.63\\times10^{-17}\\ \\mathrm{J}}{2 \\times 1.2\\times10^{-17}\\ \\mathrm{m^2}} \\approx 0.68\\ \\mathrm{J\\,m^{-2}}" } ], "https://w3id.org/delphi/ontology/context": [ { "@value": "Theodor Ackbarow et al., “Alpha-Helical Protein Networks Are Self-Protective and Flaw-Tolerant”, PLoS ONE 4, e6015 (2009), doi:10.1371/journal.pone.0006015; Results and Discussion. Scope: Mesoscale alpha-helix network model" } ] } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/provenance", "@graph": [ { "@id": "https://doi.org/10.1371/journal.pone.0006015", "http://purl.org/dc/terms/bibliographicCitation": [ { "@value": "Theodor Ackbarow, Dipanjan Sen, Christian Thaulow, Markus J. Buehler. Alpha-Helical Protein Networks Are Self-Protective and Flaw-Tolerant. PLoS ONE 4, e6015 (2009). doi:10.1371/journal.pone.0006015" } ], "http://purl.org/dc/terms/creator": [ { "@value": "Theodor Ackbarow, Dipanjan Sen, Christian Thaulow, Markus J. Buehler" } ], "http://purl.org/dc/terms/date": [ { "@value": "2009", "@type": "http://www.w3.org/2001/XMLSchema#gYear" } ], "http://purl.org/dc/terms/identifier": [ { "@value": "PMC2696088" }, { "@value": "doi:10.1371/journal.pone.0006015" }, { "@value": "pmid:19547709" } ], "http://purl.org/dc/terms/title": [ { "@value": "Alpha-Helical Protein Networks Are Self-Protective and Flaw-Tolerant" } ], "@type": [ "https://schema.org/CreativeWork" ] }, { "@id": "https://europepmc.org/article/PMC/PMC2696088", "http://spdx.org/rdf/terms#checksum": [ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/sourceChecksum" } ], "@type": [ "http://www.w3.org/ns/prov#Entity" ], "http://www.w3.org/2000/01/rdf-schema#label": [ { "@value": "Full text of Alpha-Helical Protein Networks Are Self-Protective and Flaw-Tolerant, as read" } ], "https://schema.org/about": [ { "@id": "https://doi.org/10.1371/journal.pone.0006015" } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/sourceChecksum", "http://spdx.org/rdf/terms#algorithm": [ { "@id": "http://spdx.org/rdf/terms#checksumAlgorithm_sha256" } ], "http://spdx.org/rdf/terms#checksumValue": [ { "@value": "d35d9ea109c79b04ca4f44608c823ee0ab4e43a642147772bb6b89e3fe2d734f" } ], "http://www.w3.org/2000/01/rdf-schema#comment": [ { "@value": "Checksum of the vendored text file inputs/2009-helical-networks.txt, not of the publisher's copy." } ] }, { "@id": "https://w3id.org/delphi/resource/agent/delphisci-buehler-protein-materials-extractor", "@type": [ "http://www.w3.org/ns/prov#SoftwareAgent" ], "http://www.w3.org/2000/01/rdf-schema#label": [ { "@value": "delphisci buehler-protein-materials claim extractor" } ], "http://www.w3.org/ns/prov#actedOnBehalfOf": [ { "@id": "https://orcid.org/0009-0007-4948-9192" } ], "https://w3id.org/delphi/ontology/usesModel": [ { "@id": "https://w3id.org/delphi/resource/model/claude-fable-5.1" } ] }, { "@id": "https://w3id.org/delphi/resource/model/claude-fable-5.1", "@type": [ "https://w3id.org/delphi/ontology/LanguageModel" ], "http://www.w3.org/2000/01/rdf-schema#label": [ { "@value": "Claude Fable 5.1" } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/assertion", "http://www.w3.org/ns/prov#wasAttributedTo": [ { "@id": "https://w3id.org/delphi/resource/agent/delphisci-buehler-protein-materials-extractor" } ], "http://www.w3.org/ns/prov#wasDerivedFrom": [ { "@id": "https://doi.org/10.1371/journal.pone.0006015" }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/quote" } ], "http://www.w3.org/ns/prov#wasGeneratedBy": [ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/extraction" } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/quote", "@type": [ "http://www.w3.org/ns/prov#Entity" ], "http://www.w3.org/2000/01/rdf-schema#comment": [ { "@value": "Quoted from the full text (cc by licence), paragraph 16 of 2009-helical-networks.txt (sha256 d35d9ea109c79b04ca4f44608c823ee0ab4e43a642147772bb6b89e3fe2d734f), vendored from Europe PMC PMC2696088 by build/resolve.py and checked by build/check.py." } ], "http://www.w3.org/ns/prov#hadPrimarySource": [ { "@id": "https://europepmc.org/article/PMC/PMC2696088" } ], "http://www.w3.org/ns/prov#wasQuotedFrom": [ { "@id": "https://doi.org/10.1371/journal.pone.0006015" } ], "https://schema.org/text": [ { "@value": "Since W = 1.63×10−17 J (obtained from the integral over the force-displacement curve of an alpha-helical element until breaking of the covalent backbone; it equals the area under the curve shown in ), and A = 1.2×10−17 m2 (length: 12×10−9 m, width: 10×10−10 m) the fracture surface energy is given by . This is a value that is comparable to the fracture surface energy of silicon, which features along the <111> crystal plane, albeit silicon has a much greater elastic modulus of E = 243 GPa ." } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/extraction", "@type": [ "http://www.w3.org/ns/prov#Activity" ], "http://www.w3.org/ns/prov#qualifiedAssociation": [ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/extractionPlan" } ], "http://www.w3.org/ns/prov#used": [ { "@id": "https://europepmc.org/article/PMC/PMC2696088" }, { "@id": "https://github.com/fractastical/delphisci/blob/b89a0890bee05ef18f8202387085854fac3ca776/claim-sources/buehler-protein-materials/inputs/sources.json" } ], "http://www.w3.org/ns/prov#wasAssociatedWith": [ { "@id": "https://w3id.org/delphi/resource/agent/delphisci-buehler-protein-materials-extractor" } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/extractionPlan", "http://www.w3.org/ns/prov#hadPlan": [ { "@id": "https://github.com/fractastical/delphisci/blob/b89a0890bee05ef18f8202387085854fac3ca776/claim-sources/buehler-protein-materials/build/generate.mjs" } ] } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/Head", "@graph": [ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI", "http://www.nanopub.org/nschema#hasAssertion": [ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/assertion" } ], "http://www.nanopub.org/nschema#hasProvenance": [ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/provenance" } ], "http://www.nanopub.org/nschema#hasPublicationInfo": [ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/pubinfo" } ], "@type": [ "http://www.nanopub.org/nschema#Nanopublication" ] } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/pubinfo", "@graph": [ { "@id": "https://w3id.org/delphi/resource/domain/buehler-protein-materials", "http://www.w3.org/2000/01/rdf-schema#label": [ { "@value": "buehler-protein-materials" } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI", "http://purl.org/dc/terms/created": [ { "@value": "2026-11-08T04:38:11.893Z", "@type": "http://www.w3.org/2001/XMLSchema#dateTime" } ], "http://purl.org/dc/terms/creator": [ { "@id": "https://orcid.org/0009-0007-4948-9192" } ], "http://purl.org/dc/terms/license": [ { "@id": "https://creativecommons.org/licenses/by/4.0/" } ], "http://purl.org/nanopub/x/hasNanopubType": [ { "@id": "https://w3id.org/delphi/ontology/Claim" } ], "http://purl.org/nanopub/x/introduces": [ { "@id": "https://w3id.org/delphi/resource/claim/buehler-2009-helical-networks-05" } ], "http://www.w3.org/2000/01/rdf-schema#label": [ { "@value": "Theodor Ackbarow et al. 2009 claim: Fracture surface energy of the alpha-helix network is comparable to silicon's" } ], "https://w3id.org/delphi/ontology/domain": [ { "@id": "https://w3id.org/delphi/resource/domain/buehler-protein-materials" } ] }, { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI/sig", "http://purl.org/nanopub/x/hasAlgorithm": [ { "@value": "RSA" } ], "http://purl.org/nanopub/x/hasPublicKey": [ { "@value": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyFHtPB6p0mCjDozxlOY9CmO3nBm7Te3jFbXyLmM+G1tGe47Da0jYIbhkl9Oo1ZjxmCa3LCwlEqK8gj6hEIcL4ahW30JXh9HycfKVk1bugkzMEV15tJdTzAU3sGMFnbNsn43xY2LFLy45tApkRm5byEiM7oRRrooIdwoQKnP4Wzq/bfAoJ9qvW+MGkelyOTd1jbSt+KfmT7xKmDfWzAHddUlWwMX2QJOLxDaffOteTop6ZRgPiNmPJKA/S62Gac9XtSYT3oDkZ6/nr5cxxNLpOyxTf5FPISiCe11xYO/unYjY+mwnOfA8yhJIyx1l0O9I0vpOpn+E5TvyHJV+oSTrvwIDAQAB" } ], "http://purl.org/nanopub/x/hasSignature": [ { "@value": "u8sz6wDFXEe2oBKwufuF6srRHJ6ZWlm4ZNY0icku+NFctUE5M3V8B9EbeMAbeqUuTnn1swKO8++96UsQ50plIQJ7rsS3yp4S9hYWG1xlIDcIt78tkXVAi1w+vWHpjr06+yRH6hUz3WNjNWv3q4KNLRUdLJ4rLu3+aCLYey9Pxr70CLwCOPed3+65xg5YpeuAbq3IT0jsfea6WlK07i8ldT8JDFjf66c4ZW08LVWix3ICUby4eNcykvTTgw4eHhCgFWk1SrAmAQQkOYE7/YPtlW5nqlbUz+xYLTBlWXfwK+6eIlzLMjsPA9kfcnWf9cyfmqztza0lHcXQrE8pcOIBXQ==" } ], "http://purl.org/nanopub/x/hasSignatureTarget": [ { "@id": "https://w3id.org/np/RAJADhse-fgEP7k6vitftJyX8vcLYw1KCpq1DgFEQoPyI" } ], "http://purl.org/nanopub/x/signedBy": [ { "@id": "https://orcid.org/0009-0007-4948-9192" } ] } ] } ]