{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RNDNCSJLXT26ZQTK3PNNCZAFBE","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":"c3b0ea56bcc4139734d2eedcb6e7fd18c56ee8a4e71cd2d365d325fe154630a3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-09-13T16:08:34Z","title_canon_sha256":"37cb72e1b2f4d2aa54c4e9d6130ba93b48243c650446d0d27d10bde4d00fc121"},"schema_version":"1.0","source":{"id":"1809.05033","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.05033","created_at":"2026-05-18T00:05:46Z"},{"alias_kind":"arxiv_version","alias_value":"1809.05033v1","created_at":"2026-05-18T00:05:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.05033","created_at":"2026-05-18T00:05:46Z"},{"alias_kind":"pith_short_12","alias_value":"RNDNCSJLXT26","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RNDNCSJLXT26ZQTK","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RNDNCSJL","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:81cd6c9c21a77f7c90a71a9a1aa91eb7fa6f09f244ff9bdcd4ac2e3a487128c2","target":"graph","created_at":"2026-05-18T00:05:46Z","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":"Periodic fluidization of solids in a gas medium can generate structured bubbling patterns. This phenomenon has been successfully reproduced in fluidized bed systems called pulsed-fluidized beds, known for their efficient mixing and tunability. The resulting pattern depends on particle properties, dimensions of the bed, mean inlet velocity, bed height, and amplitude and frequency of pulsing. It is however important to understand the changes in granular rheology associated with bubbling patterns. In the experimental work presented, we report on the results from a small-scale quasi-two-dimensiona","authors_text":"Avinash Vaidheeswaran, Jonathan E. Higham, Mehrdad Shahnam","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-09-13T16:08:34Z","title":"On the Dynamics of a Quasi-Two-Dimensional Pulsed-Fludized Bed"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05033","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":"sha256:06e0d356f62f1eb2cbe9e2dbdb890349857c1a5622ffbf702f8d2e92e940e25b","target":"record","created_at":"2026-05-18T00:05:46Z","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":"c3b0ea56bcc4139734d2eedcb6e7fd18c56ee8a4e71cd2d365d325fe154630a3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2018-09-13T16:08:34Z","title_canon_sha256":"37cb72e1b2f4d2aa54c4e9d6130ba93b48243c650446d0d27d10bde4d00fc121"},"schema_version":"1.0","source":{"id":"1809.05033","kind":"arxiv","version":1}},"canonical_sha256":"8b46d1492bbcf5ecc26adbdad164050925d6b8eaa8e4b142bb8a59ae85734c9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8b46d1492bbcf5ecc26adbdad164050925d6b8eaa8e4b142bb8a59ae85734c9d","first_computed_at":"2026-05-18T00:05:46.786832Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:46.786832Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Zf75L14FN3Vz7GOfaEknTb2mvyJNtowE2lZHJQGpztYDTbK06AHUrXKfrMS1bfl+VZCkBcx5vUl8L9nSZtovDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:46.787517Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.05033","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:06e0d356f62f1eb2cbe9e2dbdb890349857c1a5622ffbf702f8d2e92e940e25b","sha256:81cd6c9c21a77f7c90a71a9a1aa91eb7fa6f09f244ff9bdcd4ac2e3a487128c2"],"state_sha256":"60384c12e2158f2f344f0b41f85b351642fed840c2bb2e01cf1fcb5c3219531b"}