@prefix this: . @prefix sub: . @prefix np: . @prefix rdf: . @prefix prov: . @prefix npx: . @prefix dc: . @prefix xsd: . sub:Head { this: a np:Nanopublication; np:hasAssertion sub:assertion; np:hasProvenance sub:provenance; np:hasPublicationInfo sub:pubinfo . } sub:assertion { a ; dc:description "The threshold crack speed in silicon may be due to a localized phase transformation of the lattice at the crack tip from six-membered rings to a 5-7 double ring."; dc:type "mechanism"; "The speed threshold arises from a 6-ring to 5-7 double-ring transformation at the crack tip"; "Markus J. Buehler et al., “Threshold Crack Speed Controls Dynamical Fracture of Silicon Single Crystals”, Physical Review Letters 99 (2007), doi:10.1103/physrevlett.99.165502; Abstract. Scope: Silicon crack tip, ReaxFF reactive MD" . } sub:provenance { a ; dc:bibliographicCitation "Markus J. Buehler, Harvey Tang, Adri C. T. van Duin, William A. Goddard. Threshold Crack Speed Controls Dynamical Fracture of Silicon Single Crystals. Physical Review Letters 99 (2007). doi:10.1103/physrevlett.99.165502"; dc:creator "Markus J. Buehler, Harvey Tang, Adri C. T. van Duin, William A. Goddard"; dc:date "2007"^^xsd:gYear; dc:identifier "doi:10.1103/physrevlett.99.165502", "pmid:17995264"; dc:title "Threshold Crack Speed Controls Dynamical Fracture of Silicon Single Crystals" . a prov:SoftwareAgent; "delphisci buehler-protein-materials claim extractor"; prov:actedOnBehalfOf ; . a ; "Claude Fable 5.1" . sub:assertion prov:wasAttributedTo ; prov:wasDerivedFrom , sub:quote; prov:wasGeneratedBy sub:extraction . sub:extraction a prov:Activity; prov:qualifiedAssociation sub:extractionPlan; prov:used , ; prov:wasAssociatedWith . sub:extractionPlan prov:hadPlan . sub:quote a prov:Entity; "Quoted from the published abstract as returned by Europe PMC (2007-silicon-crack.abstract.txt, sha256 738b7efc8c80dd5d2f65952c2668e50f1e5caa3f191aa9d2a7309212a85418f7); the full text was not read (not in Europe PMC open-access subset). Checked by build/check.py."; prov:hadPrimarySource ; prov:wasQuotedFrom ; "Here we show that this threshold crack speed may be due to a localized phase transformation of the silicon lattice from 6-membered rings to a 5-7 double ring at the crack tip." . sub:sourceChecksum ; "738b7efc8c80dd5d2f65952c2668e50f1e5caa3f191aa9d2a7309212a85418f7"; "Checksum of the vendored text file inputs/2007-silicon-crack.abstract.txt, not of the publisher's copy." . a prov:Entity; sub:sourceChecksum; "Abstract of Threshold Crack Speed Controls Dynamical Fracture of Silicon Single Crystals, as read"; . } sub:pubinfo { "buehler-protein-materials" . this: dc:created "2026-11-08T04:38:11.893Z"^^xsd:dateTime; dc:creator ; dc:license ; npx:hasNanopubType ; npx:introduces ; "Markus J. Buehler et al. 2007 claim: The speed threshold arises from a 6-ring to 5-7 double-ring transformation at the crack tip"; . sub:sig npx:hasAlgorithm "RSA"; npx:hasPublicKey "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyFHtPB6p0mCjDozxlOY9CmO3nBm7Te3jFbXyLmM+G1tGe47Da0jYIbhkl9Oo1ZjxmCa3LCwlEqK8gj6hEIcL4ahW30JXh9HycfKVk1bugkzMEV15tJdTzAU3sGMFnbNsn43xY2LFLy45tApkRm5byEiM7oRRrooIdwoQKnP4Wzq/bfAoJ9qvW+MGkelyOTd1jbSt+KfmT7xKmDfWzAHddUlWwMX2QJOLxDaffOteTop6ZRgPiNmPJKA/S62Gac9XtSYT3oDkZ6/nr5cxxNLpOyxTf5FPISiCe11xYO/unYjY+mwnOfA8yhJIyx1l0O9I0vpOpn+E5TvyHJV+oSTrvwIDAQAB"; npx:hasSignature "wZC2C3dspfZeiDDu46yYRo8Ot8AhIIY6CgbEn4SJ6oOTMRRuZy3ARzycRVgh1bfxaUDF4wGA1z+AW2018mHjie4yYokhEjAJ0Exb3iGzGW7DKyHjpWpkzCMJoPr3aRv8EeHLEqFbtxQHtDlWFhOki7VBiLDgVY1HY+ePkJ6q+6oEcb8uvHZ1QdH9JjaXmSUaRxh3e+SX5QwnaRB7zPeLu+iVduk3dTL1rWXY39emyPLcvDAixrcD1nrxswOS/nLcm7J/Yo0F2QTE9ce89/TpL0wdsbZI4jDaBfRhMnNjPV89V8yApUjfa2IyZzeFmSPUFXT5UlNFfWR6+ShOvxk26Q=="; npx:hasSignatureTarget this:; npx:signedBy . }