{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OMWATBNTBQC2GBEBNUMOIJ6H3M","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":"04c7b1b961585b4a5af27484ab8a6f2f63bc53d8514e4c9e71f218d629ddb152","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-01-22T22:56:01Z","title_canon_sha256":"1d88e3eacb33016c3281d947edde916c09b0d5835ddca0a7674464a6f87653a3"},"schema_version":"1.0","source":{"id":"1901.07637","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.07637","created_at":"2026-05-17T23:55:41Z"},{"alias_kind":"arxiv_version","alias_value":"1901.07637v1","created_at":"2026-05-17T23:55:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.07637","created_at":"2026-05-17T23:55:41Z"},{"alias_kind":"pith_short_12","alias_value":"OMWATBNTBQC2","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OMWATBNTBQC2GBEB","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OMWATBNT","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:a06180cb638682fee524f8557b1ee8bc996572e0150057f32337c10471ca8241","target":"graph","created_at":"2026-05-17T23:55:41Z","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":"The fluorescence spectra of bacterial samples stained with SYTO 9 and propidium iodide (PI) were used to monitor bacterial viability. Stained mixtures of live and dead Escherichia coli with proportions of live:dead cells varying from 0 to 100% were measured using the optrode, a cost effective and convenient fibre-based spectroscopic device. We demonstrated several approaches to obtaining the proportions of live:dead E. coli in a mixture of both live and dead, from analyses of the fluorescence spectra collected by the optrode. To find a suitable technique for predicting the percentage of live b","authors_text":"Cushla McGoverin, Fang Ou, Fr\\'ed\\'erique Vanholsbeeck, Simon Swift","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-01-22T22:56:01Z","title":"Rapid and cost-effective evaluation of bacterial viability using fluorescence spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.07637","kind":"arxiv","version":1},"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":"sha256:9db0f0c3c6973b51c1473c3661446e1f582849e805d862be09ebde4f120205e7","target":"record","created_at":"2026-05-17T23:55:41Z","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":"04c7b1b961585b4a5af27484ab8a6f2f63bc53d8514e4c9e71f218d629ddb152","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.QM","submitted_at":"2019-01-22T22:56:01Z","title_canon_sha256":"1d88e3eacb33016c3281d947edde916c09b0d5835ddca0a7674464a6f87653a3"},"schema_version":"1.0","source":{"id":"1901.07637","kind":"arxiv","version":1}},"canonical_sha256":"732c0985b30c05a304816d18e427c7db2373a87056436a3b1a0c1538928a83b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"732c0985b30c05a304816d18e427c7db2373a87056436a3b1a0c1538928a83b1","first_computed_at":"2026-05-17T23:55:41.995994Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:41.995994Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kjmhh4A6CLgaBo4+HEJMnD2ivxm8APNTL0x3+q7BeqMiMjHr8Vc4xQLXZNJO7E9l1+TiQ/W7uGclcAc48HH6Cw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:41.996603Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.07637","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9db0f0c3c6973b51c1473c3661446e1f582849e805d862be09ebde4f120205e7","sha256:a06180cb638682fee524f8557b1ee8bc996572e0150057f32337c10471ca8241"],"state_sha256":"7bfee69873ccf962cef211e3ae847130242298b78a21585d969bbf7cb6fbd3bf"}