{"doi":"10.2172/10158151","title":"Spin-mapping of coal structures with ESE and ENDOR. Thirteenth quarterly report","abstract":null,"journal":null,"year":1991,"id":676227,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":0,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1766944,"name":"R.B. Clarkson","orcid":null,"position":1,"is_corresponding":false},{"id":1766943,"name":"R.L. Belford","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Spin-mapping of coal structures with ESE and ENDOR. Thirteenth quarterly report","abstract":"The goals of this program include developing a system for the analysis of the chemical forms of organic sulfur in coal and for study of coal particle surfaces by multifrequency EPR spectroscopy, ENDOR, and ESE spectroscopy and Applying it to coals, to the effects of treatment upon their sulfur-containing organic components, and to related carbonaceous materials (chars and the like). The approach is to utilize the naturally-occurring unpaired electrons in the organic structures of coals as spies to provide molecular structure information, reading out the information with Electron Paramagnetic Resonance (EPR) spectroscopy. Several forms of EPR are employed: Multifrequency continuous-wave (CW) EPR, from 1 GHz to 240 GHz source frequency; electron-nuclear double resonance (ENDOR), in which NMR spectra at paramagnetic centers are obtained by EPR detection; and pulsed EPR, including ESE (Electron Spin Echo) spectroscopy.","is_dataset_classified":null,"base_score":0.0,"endowment":0.0,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"21097893","pmcid":null,"openalex_id":"https://openalex.org/W1550730699","authors":[],"funders":[],"total_grants":0,"fwci":null,"citation_percentile":null,"influential_citations":0,"citation_trend":[],"oa_status":"green","license":null,"oa_locations":[{"url":"https://www.osti.gov/servlets/purl/10158151","host_type":"repository"},{"url":"https://www.osti.gov/servlets/purl/10158151","host_type":"repository"},{"url":"https://www.osti.gov/biblio/10158151","host_type":"repository"},{"url":"https://doi.org/10.2172/10158151","host_type":""},{"url":"https://digital.library.unt.edu/ark:/67531/metadc1389708/","host_type":"repository"}],"fields_of_study":["Methane Hydrates and Related Phenomena","NMR spectroscopy and applications","Hydrocarbon exploration and reservoir analysis"],"mesh_terms":[],"keywords":["Electron paramagnetic resonance","Unpaired electron","Spectroscopy","Pulsed EPR","Chemistry","Electron nuclear double resonance","Sulfur","Spin (aerodynamics)","Nuclear magnetic resonance spectroscopy","Resonance (particle physics)","Nuclear magnetic resonance","Atomic physics","Spin echo","Physics","Organic chemistry","Magnetic resonance imaging"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-17T02:15:49.294665Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}