{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:EIUFRQULGE25OOHKTA43DFOCKQ","short_pith_number":"pith:EIUFRQUL","schema_version":"1.0","canonical_sha256":"222858c28b3135d738ea9839b195c2543797ba9e35af91d57091eb4d4feaf408","source":{"kind":"arxiv","id":"1412.1272","version":1},"attestation_state":"computed","paper":{"title":"Scaling of phloem structure and optimality of photoassimilate transport in conifer needles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.TO"],"primary_cat":"physics.bio-ph","authors_text":"Alexander Schulz, Eleni Katifori, Henrik Ronellenfitsch, Johannes Liesche, Kaare H. Jensen, N. Michele Holbrook","submitted_at":"2014-12-03T11:01:32Z","abstract_excerpt":"The phloem vascular system facilitates transport of energy-rich sugar and signaling molecules in plants, thus permitting long range communication within the organism and growth of non-photosynthesizing organs such as roots and fruits. The flow is driven by osmotic pressure, generated by differences in sugar concentration between distal parts of the plant. The phloem is an intricate distribution system, and many questions about its regulation and structural diversity remain unanswered. Here, we investigate the phloem structure in the simplest possible geometry: a linear leaf, found, for example"},"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":"1412.1272","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2014-12-03T11:01:32Z","cross_cats_sorted":["q-bio.TO"],"title_canon_sha256":"f946022e989998883629c4058455637261a4f37033f9e226c334fcacd2e4e2ef","abstract_canon_sha256":"166394b313c9d6ce92468ab91209fc76dcd69bac0f6374ae75ec802066afaf48"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:01.911125Z","signature_b64":"o0MzadHTCsFgoppZG+rhlsoE1WpUD9uZFgoaqGvHDkZkGuNyxhoD6I51vEgAEaRT2aPja7HqjIQ7wY8BYxXzCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"222858c28b3135d738ea9839b195c2543797ba9e35af91d57091eb4d4feaf408","last_reissued_at":"2026-05-18T01:12:01.910767Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:01.910767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Scaling of phloem structure and optimality of photoassimilate transport in conifer needles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.TO"],"primary_cat":"physics.bio-ph","authors_text":"Alexander Schulz, Eleni Katifori, Henrik Ronellenfitsch, Johannes Liesche, Kaare H. Jensen, N. Michele Holbrook","submitted_at":"2014-12-03T11:01:32Z","abstract_excerpt":"The phloem vascular system facilitates transport of energy-rich sugar and signaling molecules in plants, thus permitting long range communication within the organism and growth of non-photosynthesizing organs such as roots and fruits. The flow is driven by osmotic pressure, generated by differences in sugar concentration between distal parts of the plant. The phloem is an intricate distribution system, and many questions about its regulation and structural diversity remain unanswered. Here, we investigate the phloem structure in the simplest possible geometry: a linear leaf, found, for example"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.1272","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":"1412.1272","created_at":"2026-05-18T01:12:01.910827+00:00"},{"alias_kind":"arxiv_version","alias_value":"1412.1272v1","created_at":"2026-05-18T01:12:01.910827+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.1272","created_at":"2026-05-18T01:12:01.910827+00:00"},{"alias_kind":"pith_short_12","alias_value":"EIUFRQULGE25","created_at":"2026-05-18T12:28:25.294606+00:00"},{"alias_kind":"pith_short_16","alias_value":"EIUFRQULGE25OOHK","created_at":"2026-05-18T12:28:25.294606+00:00"},{"alias_kind":"pith_short_8","alias_value":"EIUFRQUL","created_at":"2026-05-18T12:28:25.294606+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/EIUFRQULGE25OOHKTA43DFOCKQ","json":"https://pith.science/pith/EIUFRQULGE25OOHKTA43DFOCKQ.json","graph_json":"https://pith.science/api/pith-number/EIUFRQULGE25OOHKTA43DFOCKQ/graph.json","events_json":"https://pith.science/api/pith-number/EIUFRQULGE25OOHKTA43DFOCKQ/events.json","paper":"https://pith.science/paper/EIUFRQUL"},"agent_actions":{"view_html":"https://pith.science/pith/EIUFRQULGE25OOHKTA43DFOCKQ","download_json":"https://pith.science/pith/EIUFRQULGE25OOHKTA43DFOCKQ.json","view_paper":"https://pith.science/paper/EIUFRQUL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1412.1272&json=true","fetch_graph":"https://pith.science/api/pith-number/EIUFRQULGE25OOHKTA43DFOCKQ/graph.json","fetch_events":"https://pith.science/api/pith-number/EIUFRQULGE25OOHKTA43DFOCKQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EIUFRQULGE25OOHKTA43DFOCKQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EIUFRQULGE25OOHKTA43DFOCKQ/action/storage_attestation","attest_author":"https://pith.science/pith/EIUFRQULGE25OOHKTA43DFOCKQ/action/author_attestation","sign_citation":"https://pith.science/pith/EIUFRQULGE25OOHKTA43DFOCKQ/action/citation_signature","submit_replication":"https://pith.science/pith/EIUFRQULGE25OOHKTA43DFOCKQ/action/replication_record"}},"created_at":"2026-05-18T01:12:01.910827+00:00","updated_at":"2026-05-18T01:12:01.910827+00:00"}