{"public_id":"cl_afc11b8278fbd337c0aabc6d95905627","status":"active","superseded_by_public_id":null,"corpus_id":95818466,"text":"Two experiments combining multiple-quantum filtration with conventional spin-echo and inversion-recovery sequences can determine the motional correlation time for isotropic motion without knowing the quadrupolar coupling constant.","confidence":0.97,"paper":{"corpus_id":95818466,"title":"Multiple‐quantum NMR spectroscopy of S=3/2 spins in isotropic phase: A new probe for multiexponential relaxation","url":"https://sah.borca.ai/papers/95818466"},"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.97,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_29c07a63df0ca86c6c3c23fadecf456b","name":"spin-echo sequence","description":"A pulse sequence used in NMR to refocus dephasing and form a spin echo.","types":["NMR pulse sequence"],"url":"https://sah.borca.ai/concepts/co_29c07a63df0ca86c6c3c23fadecf456b"},{"public_id":"co_3d070d89f28c50b469a286144383315c","name":"inversion-recovery sequence","description":"A pulse sequence used in NMR to measure longitudinal relaxation by applying an inversion pulse followed by recovery.","types":["NMR pulse sequence"],"url":"https://sah.borca.ai/concepts/co_3d070d89f28c50b469a286144383315c"},{"public_id":"co_88f4409c58dffe3f9be2bae0ef73f63e","name":"multiple-quantum filtration","description":"An NMR selection technique that isolates signals associated with multiple-quantum coherences.","types":["NMR technique"],"url":"https://sah.borca.ai/concepts/co_88f4409c58dffe3f9be2bae0ef73f63e"},{"public_id":"co_a734b03cc8fbdf66751e6c5351bbdebd","name":"motional correlation time","description":"The characteristic timescale of molecular motion being estimated from the NMR experiments.","types":["dynamical parameter"],"url":"https://sah.borca.ai/concepts/co_a734b03cc8fbdf66751e6c5351bbdebd"},{"public_id":"co_b3f71d0a9fb0ce71deaacfc826402669","name":"quadrupolar coupling constant","description":"A parameter that quantifies the strength of quadrupolar interaction in an NMR spin system.","types":["interaction parameter"],"url":"https://sah.borca.ai/concepts/co_b3f71d0a9fb0ce71deaacfc826402669"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_afc11b8278fbd337c0aabc6d95905627"}