{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:MMHQTDDPCYBXGXAYYP7Y32J2Q6","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"70a75b72ff25701e5fc890c9f3b848302e72b04d068d42a7bb26f23c0e74522c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2013-07-17T06:10:54Z","title_canon_sha256":"a0bda9eecf6bb53183357c5b9eb788b69c2a91f908105a2513be518fe8cab9e1"},"schema_version":"1.0","source":{"id":"1307.4511","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.4511","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"arxiv_version","alias_value":"1307.4511v2","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.4511","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"pith_short_12","alias_value":"MMHQTDDPCYBX","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MMHQTDDPCYBXGXAY","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MMHQTDDP","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:d75e3d7916538cebc9119876c5e5f4c558e814267173809b2451967d0c16cc13","target":"graph","created_at":"2026-05-18T01:03:37Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"\\item[Purpose] A recent study revealed that polyethylene (PE) would cause extra carbon-ion attenuation per range shift by 0.45\\%/cm due to compositional differences in nuclear interactions. The present study aims to assess the influence of PE range compensators on tumor dose in carbon-ion radiotherapy. \\item[Methods] Carbon-ion radiation was modeled to be composed of primary carbon ions and secondary particles, for each of which the dose and the relative biological effectiveness (RBE) were estimated at a tumor depth in the middle of spread-out Bragg peak. Assuming exponential behavior for atte","authors_text":"Nobuyuki Kanematsu, Risa Ogata, Takeshi Himukai, Yusuke Koba","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2013-07-17T06:10:54Z","title":"Influence of nuclear interactions in polyethylene range compensators for carbon-ion radiotherapy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4511","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:0a03b766d49030295e4d67e49e58c85d4d0a3e3042da36404cf2a289d87ad413","target":"record","created_at":"2026-05-18T01:03:37Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"70a75b72ff25701e5fc890c9f3b848302e72b04d068d42a7bb26f23c0e74522c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2013-07-17T06:10:54Z","title_canon_sha256":"a0bda9eecf6bb53183357c5b9eb788b69c2a91f908105a2513be518fe8cab9e1"},"schema_version":"1.0","source":{"id":"1307.4511","kind":"arxiv","version":2}},"canonical_sha256":"630f098c6f1603735c18c3ff8de93a878d8e4bc8d0bceb93e73a0b02fde79df1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"630f098c6f1603735c18c3ff8de93a878d8e4bc8d0bceb93e73a0b02fde79df1","first_computed_at":"2026-05-18T01:03:37.239270Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:03:37.239270Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Zuzk1qg5/l6dkT9ytanAX9zPAElRHhiWIgvyZvUAhfwkx9s13cGARPteeSldqX3DWEoT/QYi7byXKipdAI+Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:03:37.239981Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.4511","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a03b766d49030295e4d67e49e58c85d4d0a3e3042da36404cf2a289d87ad413","sha256:d75e3d7916538cebc9119876c5e5f4c558e814267173809b2451967d0c16cc13"],"state_sha256":"8ad574f12b3a083dc3a693a3f6263f1b299e26461c681917ecc93f1c1f11750d"}