{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:ZJEZHLMSKW7AVHZBJ2NS2TVQ32","short_pith_number":"pith:ZJEZHLMS","schema_version":"1.0","canonical_sha256":"ca4993ad9255be0a9f214e9b2d4eb0de9d66508a9f4fd1486f922318028359ad","source":{"kind":"arxiv","id":"1706.01483","version":1},"attestation_state":"computed","paper":{"title":"Autoignition of Methyl Valerate at Low to Intermediate Temperatures and Elevated Pressures in a Rapid Compression Machine","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Bryan W. Weber, Chih-Jen Sung, Justin Bunnell, Kamal Kumar","submitted_at":"2017-06-05T18:17:58Z","abstract_excerpt":"Methyl valerate (C$_6$H$_{12}$O$_2$, methyl pentanoate) is a methyl ester and a relevant surrogate component for biodiesel. In this work, we present ignition delays of methyl valerate measured using a rapid compression machine at a range of engine-relevant temperature, pressure, and equivalence ratio conditions. The conditions we have studied include equivalence ratios from 0.25 to 2.0, temperatures between 680 K and 1050 K, and pressures of 15 bar and 30 bar. The ignition delay data demonstrate a negative temperature coefficient region in the temperature range of 720 K-800 K for both $\\phi$=2"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1706.01483","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-06-05T18:17:58Z","cross_cats_sorted":[],"title_canon_sha256":"a752af780146cd42d544fb43603c30db525f88baa1ea83919b3c7c50b70ce98c","abstract_canon_sha256":"bf410a5fb390317f57d905a2082f24ac40808d1528b46507497621b94246f74c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:56.914980Z","signature_b64":"XPZrcVInAZ/7K68W+I9M+4EHndTsbmkl/NYnr70u0E8gghlN4zCaFSwcFl/EK71arIesI7zateowP2OByAkFAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ca4993ad9255be0a9f214e9b2d4eb0de9d66508a9f4fd1486f922318028359ad","last_reissued_at":"2026-05-18T00:42:56.914182Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:56.914182Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Autoignition of Methyl Valerate at Low to Intermediate Temperatures and Elevated Pressures in a Rapid Compression Machine","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Bryan W. Weber, Chih-Jen Sung, Justin Bunnell, Kamal Kumar","submitted_at":"2017-06-05T18:17:58Z","abstract_excerpt":"Methyl valerate (C$_6$H$_{12}$O$_2$, methyl pentanoate) is a methyl ester and a relevant surrogate component for biodiesel. In this work, we present ignition delays of methyl valerate measured using a rapid compression machine at a range of engine-relevant temperature, pressure, and equivalence ratio conditions. The conditions we have studied include equivalence ratios from 0.25 to 2.0, temperatures between 680 K and 1050 K, and pressures of 15 bar and 30 bar. The ignition delay data demonstrate a negative temperature coefficient region in the temperature range of 720 K-800 K for both $\\phi$=2"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.01483","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1706.01483","created_at":"2026-05-18T00:42:56.914311+00:00"},{"alias_kind":"arxiv_version","alias_value":"1706.01483v1","created_at":"2026-05-18T00:42:56.914311+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.01483","created_at":"2026-05-18T00:42:56.914311+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZJEZHLMSKW7A","created_at":"2026-05-18T12:31:59.375834+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZJEZHLMSKW7AVHZB","created_at":"2026-05-18T12:31:59.375834+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZJEZHLMS","created_at":"2026-05-18T12:31:59.375834+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32","json":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32.json","graph_json":"https://pith.science/api/pith-number/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/graph.json","events_json":"https://pith.science/api/pith-number/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/events.json","paper":"https://pith.science/paper/ZJEZHLMS"},"agent_actions":{"view_html":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32","download_json":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32.json","view_paper":"https://pith.science/paper/ZJEZHLMS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1706.01483&json=true","fetch_graph":"https://pith.science/api/pith-number/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/graph.json","fetch_events":"https://pith.science/api/pith-number/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/action/storage_attestation","attest_author":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/action/author_attestation","sign_citation":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/action/citation_signature","submit_replication":"https://pith.science/pith/ZJEZHLMSKW7AVHZBJ2NS2TVQ32/action/replication_record"}},"created_at":"2026-05-18T00:42:56.914311+00:00","updated_at":"2026-05-18T00:42:56.914311+00:00"}