{"id":"https://openalex.org/W3205588694","doi":"https://doi.org/10.3390/polym13203523","title":"Bimodal 1H Double Quantum Build-Up Curves by Fourier and Laplace-like Transforms on Aged Cross-Linked Natural Rubber","display_name":"Bimodal 1H Double Quantum Build-Up Curves by Fourier and Laplace-like Transforms on Aged Cross-Linked Natural Rubber","publication_year":2021,"publication_date":"2021-10-13","ids":{"openalex":"https://openalex.org/W3205588694","doi":"https://doi.org/10.3390/polym13203523","mag":"3205588694","pmid":"https://pubmed.ncbi.nlm.nih.gov/34685281","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/8540486"},"language":"en","primary_location":{"id":"doi:10.3390/polym13203523","doi":"https://doi.org/10.3390/polym13203523","is_oa":true,"landing_page_url":"https://doi.org/10.3390/polym13203523","pdf_url":"https://www.mdpi.com/2073-4360/13/20/3523/pdf?version=1634192365","source":{"id":"https://openalex.org/S123288148","display_name":"Polymers","issn_l":"2073-4360","issn":["2073-4360"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Polymers","raw_type":"journal-article"},"parent_works":[],"lineage":["https://openalex.org/W3205588694"],"child_works_count":0,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2073-4360/13/20/3523/pdf?version=1634192365","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5069446691","display_name":"Dumitri\u021ba Moldovan","orcid":"https://orcid.org/0000-0003-3496-226X","observed_orcids":["https://orcid.org/0000-0003-3496-226X"]},"institutions":[{"id":"https://openalex.org/I158333966","display_name":"Technical University of Cluj-Napoca","ror":"https://ror.org/03r8nwp71","country_code":"RO","type":"education","lineage":["https://openalex.org/I158333966"]}],"countries":["RO"],"is_corresponding":true,"raw_author_name":"Dumitri\u021ba Moldovan","raw_affiliation_strings":["Physics and Chemistry Department, Technical University of Cluj-Napoca, Memorandumului 28, R-400114 Cluj-Napoca, Romania"],"raw_orcid":"https://orcid.org/0000-0003-3496-226X","affiliations":[{"raw_affiliation_string":"Physics and Chemistry Department, Technical University of Cluj-Napoca, Memorandumului 28, R-400114 Cluj-Napoca, Romania","institution_ids":["https://openalex.org/I158333966"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5067677234","display_name":"Radu Fechete","orcid":"https://orcid.org/0000-0003-1989-0253","observed_orcids":["https://orcid.org/0000-0003-1989-0253"]},"institutions":[{"id":"https://openalex.org/I158333966","display_name":"Technical University of Cluj-Napoca","ror":"https://ror.org/03r8nwp71","country_code":"RO","type":"education","lineage":["https://openalex.org/I158333966"]}],"countries":["RO"],"is_corresponding":true,"raw_author_name":"Radu Fechete","raw_affiliation_strings":["Physics and Chemistry Department, Technical University of Cluj-Napoca, Memorandumului 28, R-400114 Cluj-Napoca, Romania"],"raw_orcid":"https://orcid.org/0000-0003-1989-0253","affiliations":[{"raw_affiliation_string":"Physics and Chemistry Department, Technical University of Cluj-Napoca, Memorandumului 28, R-400114 Cluj-Napoca, Romania","institution_ids":["https://openalex.org/I158333966"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5067677234","https://openalex.org/A5069446691"],"corresponding_institution_ids":["https://openalex.org/I158333966"],"apc_list":{"value":2200,"currency":"CHF","value_usd":2376},"apc_paid":{"value":2200,"currency":"CHF","value_usd":2376},"fwci":0.3567,"has_fulltext":true,"cited_by_count":6,"citation_normalized_percentile":{"value":0.36988653,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"13","issue":"20","first_page":"3523","last_page":"3523"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11809","display_name":"Advanced NMR Techniques and Applications","score":0.8241999745368958,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11809","display_name":"Advanced NMR Techniques and Applications","score":0.8241999745368958,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12603","display_name":"NMR spectroscopy and applications","score":0.1348000019788742,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.0034000000450760126,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/normal-aging","display_name":"normal aging","score":0.8939999938011169},{"id":"https://openalex.org/keywords/fourier-transform","display_name":"Fourier transform","score":0.3889999985694885},{"id":"https://openalex.org/keywords/residual-dipolar-couplings","display_name":"residual dipolar couplings","score":0.9480000138282776},{"id":"https://openalex.org/keywords/crosslink-density","display_name":"crosslink density","score":0.7620000243186951},{"id":"https://openalex.org/keywords/gaussian-deconvolution","display_name":"Gaussian deconvolution","score":0.8270000219345093},{"id":"https://openalex.org/keywords/polymer-network-structure","display_name":"polymer network structure","score":0.44699999690055847}],"concepts":[{"id":"https://openalex.org/C102519508","wikidata":"https://www.wikidata.org/wiki/Q6520159","display_name":"Fourier transform","level":2,"score":0.7020225524902344},{"id":"https://openalex.org/C163716315","wikidata":"https://www.wikidata.org/wiki/Q901177","display_name":"Gaussian","level":2,"score":0.6009501814842224},{"id":"https://openalex.org/C97937538","wikidata":"https://www.wikidata.org/wiki/Q199691","display_name":"Laplace transform","level":2,"score":0.5947654843330383},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.5367554426193237},{"id":"https://openalex.org/C207864730","wikidata":"https://www.wikidata.org/wiki/Q179467","display_name":"Fourier series","level":2,"score":0.5178351998329163},{"id":"https://openalex.org/C174576160","wikidata":"https://www.wikidata.org/wiki/Q1183700","display_name":"Deconvolution","level":2,"score":0.5093749761581421},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.43389737606048584},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.41491830348968506},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.3304939866065979},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.20704856514930725},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.1760992705821991}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/polym13203523","doi":"https://doi.org/10.3390/polym13203523","is_oa":true,"landing_page_url":"https://doi.org/10.3390/polym13203523","pdf_url":"https://www.mdpi.com/2073-4360/13/20/3523/pdf?version=1634192365","source":{"id":"https://openalex.org/S123288148","display_name":"Polymers","issn_l":"2073-4360","issn":["2073-4360"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Polymers","raw_type":"journal-article"},{"id":"pmid:34685281","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/34685281","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Polymers","raw_type":"Journal Article"},{"id":"pmh:oai:pubmedcentral.nih.gov:8540486","doi":null,"is_oa":true,"landing_page_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC8540486/","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Polymers (Basel)","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/polym13203523","doi":"https://doi.org/10.3390/polym13203523","is_oa":true,"landing_page_url":"https://doi.org/10.3390/polym13203523","pdf_url":"https://www.mdpi.com/2073-4360/13/20/3523/pdf?version=1634192365","source":{"id":"https://openalex.org/S123288148","display_name":"Polymers","issn_l":"2073-4360","issn":["2073-4360"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Polymers","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G3560469441","display_name":null,"funder_award_id":"PN-II-ID-PCE-307/2011","funder_id":"https://openalex.org/F4320323983","funder_display_name":"Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii"}],"funders":[{"id":"https://openalex.org/F4320323983","display_name":"Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii","ror":"https://ror.org/01q7jq182"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3205588694.pdf","grobid_xml":"https://content.openalex.org/works/W3205588694.grobid-xml"},"referenced_works_count":43,"referenced_works":["https://openalex.org/W1141849062","https://openalex.org/W1967336811","https://openalex.org/W1973962916","https://openalex.org/W1979908328","https://openalex.org/W1981489147","https://openalex.org/W1981893596","https://openalex.org/W1982112764","https://openalex.org/W1988785160","https://openalex.org/W1989269813","https://openalex.org/W1989576027","https://openalex.org/W1992780550","https://openalex.org/W1993340319","https://openalex.org/W1993766225","https://openalex.org/W1995094856","https://openalex.org/W1995224034","https://openalex.org/W1999692626","https://openalex.org/W2004712789","https://openalex.org/W2004890449","https://openalex.org/W2015173112","https://openalex.org/W2026344398","https://openalex.org/W2036823634","https://openalex.org/W2045959908","https://openalex.org/W2050033254","https://openalex.org/W2050818529","https://openalex.org/W2052563600","https://openalex.org/W2052569284","https://openalex.org/W2058362767","https://openalex.org/W2058630716","https://openalex.org/W2078674832","https://openalex.org/W2087924835","https://openalex.org/W2090794820","https://openalex.org/W2113492206","https://openalex.org/W2135638778","https://openalex.org/W2158141732","https://openalex.org/W2580834632","https://openalex.org/W2782617094","https://openalex.org/W2889006202","https://openalex.org/W2912979498","https://openalex.org/W2916094217","https://openalex.org/W2953362354","https://openalex.org/W2972519363","https://openalex.org/W3135845308","https://openalex.org/W4254033716"],"related_works":["https://openalex.org/W2972519363","https://openalex.org/W3110111899","https://openalex.org/W3040782752","https://openalex.org/W2883492662","https://openalex.org/W4376636972","https://openalex.org/W2002484064","https://openalex.org/W2091366798","https://openalex.org/W1985820413","https://openalex.org/W2097977474","https://openalex.org/W2316224347"],"abstract_inverted_index":{"The":[0,25,42,73,109,141,154,166,186],"1H":[1],"DQ":[2,26,43,74,112,149],"Fourier":[3,44,75,113,170],"and":[4,23,66,69,100,104,126,171],"Laplace-like":[5,142,172,184],"spectra":[6,45,76,114,143,173],"for":[7,144,198],"a":[8,50,55,116],"series":[9],"of":[10,29,83,92,96,111,118,129,156,176,183,195],"cross-linked":[11,199],"natural":[12,146,196],"rubber":[13],"(NR)":[14],"samples":[15,31],"naturally":[16],"aged":[17,147],"during":[18],"six":[19],"years":[20],"are":[21,77,152,164],"presented":[22],"characterized.":[24],"build-up":[27,150],"curves":[28,151],"these":[30],"present":[32],"two":[33],"peaks":[34],"which":[35,53,58],"cannot":[36],"be":[37,47],"described":[38,79],"by":[39,80],"classical":[40],"functions.":[41],"can":[46],"obtained":[48,160],"after":[49],"numeric":[51],"procedure":[52],"introduces":[54],"correction":[56],"time":[57],"depends":[59],"less":[60],"on":[61],"the":[62,81,84,90,93,97,102,124,127,135,138,145,169,177,181,193],"chosen":[63],"approximation,":[64],"spin-\u00bd":[65],"isolated":[67],"CH2":[68],"CH3":[70],"functional":[71],"groups.":[72],"well":[78],"distributions":[82,159],"residual":[85],"dipolar":[86],"coupling":[87],"correlated":[88],"with":[89,101,115,134],"distribution":[91],"end-to-end":[94],"vector":[95],"polymer":[98],"network,":[99],"second":[103],"fourth":[105],"van":[106],"Vleck":[107],"moments.":[108],"deconvolution":[110],"sum":[117],"four":[119,157],"Gaussian":[120,130,158],"variates":[121],"show":[122],"that":[123],"center":[125],"width":[128],"functions":[131],"increase":[132,136],"linearly":[133],"in":[137,180],"cross-link":[139],"density.":[140],"NR":[148],"presented.":[153],"centers":[155],"via":[161],"both":[162],"methods":[163],"consistent.":[165],"differences":[167],"between":[168],"consist":[174],"mainly":[175],"spectral":[178],"resolution":[179],"favor":[182],"spectra.":[185],"last":[187],"one":[188],"was":[189],"used":[190],"to":[191],"discuss":[192],"effect":[194],"aging":[197],"NR.":[200]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1}],"updated_date":"2026-11-13T13:42:25.865203","created_date":"2021-10-25T00:00:00"}