{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:XNSS2WRYTQ3PN4A3U4R7MCSEVG","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":"d0a8304dca958ea857312832521c6eb0ca491bbe7727a19f798f28876ade14a3","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.chem-ph","submitted_at":"2009-11-11T03:39:30Z","title_canon_sha256":"988ea38a07fb1e041517039d2415906804e031808ba75ee48f12a5d5ab95ae85"},"schema_version":"1.0","source":{"id":"0911.2012","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.2012","created_at":"2026-05-18T03:55:37Z"},{"alias_kind":"arxiv_version","alias_value":"0911.2012v2","created_at":"2026-05-18T03:55:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.2012","created_at":"2026-05-18T03:55:37Z"},{"alias_kind":"pith_short_12","alias_value":"XNSS2WRYTQ3P","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"XNSS2WRYTQ3PN4A3","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"XNSS2WRY","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:105141635d35ff37b2de0032a1b655432d75804c156acbefdb538ace6d57bfbf","target":"graph","created_at":"2026-05-18T03:55:37Z","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":"A simple model to fit experimental data of adsorption of gases and vapours on microporous adsorbents (type I isotherms) is proposed. The main assumption is that the adsorbate phase can be divided into identical and non-interacting effective subsystems. This gives rise to a simple multiparametric isotherm based on the grand canonical ensemble statistics, whose functional form is a ratio of two polynomial functions. The parameters are interpreted as effective equilibrium constants. A simplified isotherm that reduces the number of adjustable parameters with respect to the general isotherm is also","authors_text":"Martin A. Mosquera","cross_cats":["cond-mat.mes-hall","cond-mat.stat-mech"],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.chem-ph","submitted_at":"2009-11-11T03:39:30Z","title":"Simple isotherm equations to fit type I adsorption data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.2012","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:a495bbc06dfea989267e3c5b08f1c3fd39ad28bfe13b10f938691c1ea893ad8a","target":"record","created_at":"2026-05-18T03:55:37Z","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":"d0a8304dca958ea857312832521c6eb0ca491bbe7727a19f798f28876ade14a3","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.chem-ph","submitted_at":"2009-11-11T03:39:30Z","title_canon_sha256":"988ea38a07fb1e041517039d2415906804e031808ba75ee48f12a5d5ab95ae85"},"schema_version":"1.0","source":{"id":"0911.2012","kind":"arxiv","version":2}},"canonical_sha256":"bb652d5a389c36f6f01ba723f60a44a996f42f9a4bdcd4c3a383d56fcbcc11c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb652d5a389c36f6f01ba723f60a44a996f42f9a4bdcd4c3a383d56fcbcc11c3","first_computed_at":"2026-05-18T03:55:37.712977Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:37.712977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dNSOEkmqn4LXIIee4x7dsUno8zN7mtu2qCV948T7VR+ORbGpTnOhgKVNVT5XpqTy6bOjaKbyPUxp5Dh2SsWbBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:37.713438Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.2012","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a495bbc06dfea989267e3c5b08f1c3fd39ad28bfe13b10f938691c1ea893ad8a","sha256:105141635d35ff37b2de0032a1b655432d75804c156acbefdb538ace6d57bfbf"],"state_sha256":"512b0d8c3b9c34ad7508bfa5ead915b9b49c2700de41c89376b68aee30cb5472"}