{"id":"W2087990355","doi":"10.1016/s0168-583x(03)00662-1","title":"Study of natural ageing of polypropylene by X-ray photoelectron spectroscopy","year":2003,"lang":"en","type":"article","venue":"Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms","topic":"Electron and X-Ray Spectroscopy Techniques","field":"Materials Science","cited_by":31,"is_retracted":false,"has_abstract":false,"ca_institutions":"Université Laval","funders":"","keywords":"X-ray photoelectron spectroscopy; Polypropylene; Ageing; Materials science; Natural (archaeology); Composite material; Chemical engineering; Engineering; Geography; Biology; Archaeology","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001003856,0.0001560335,0.0001168125,0.0001758606,0.0001225247,0.000185762,0.0001653395,0.0001636966,0.0007146812],"category_scores_gemma":[0.0002689507,0.00008257476,0.0001193647,0.0001946343,0.0001781897,0.0003412749,0.00009465874,0.0002323547,0.0001058735],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001436364,"about_ca_system_score_gemma":0.00009862588,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0006175175,"about_ca_topic_score_gemma":0.0005528511,"domain_scores_codex":[0.9999279,0.000008192218,0.000004671985,0.00001967152,0.00002542333,0.00001421969],"domain_scores_gemma":[0.9999056,0.00002247954,0.00002409432,0.00001291598,0.00002661702,0.000008373422],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.00009225898,0.000009337014,0.00101432,0.00006427743,0.00000726811,0.00009064518,0.00005637356,0.0001441624,0.9961298,0.00008235521,0.00002606119,0.002283138],"study_design_scores_gemma":[0.00000450855,0.0002430791,0.02491321,0.00001016281,0.00001812349,0.000333456,0.0001106874,0.001243628,0.9703663,0.00008132323,0.002667492,0.000008001444],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9974016,0.0007841994,0.001061227,0.00001153617,0.000005432889,0.000005969713,0.0001259539,0.000008400848,0.000595665],"genre_scores_gemma":[0.9978729,0.0003874952,0.0006724868,0.00000681694,0.000002385766,0.000004887492,0.000128964,0.000006664394,0.0009173655],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.0007146812,"threshold_uncertainty_score":0.002390862,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02933882645278405,"score_gpt":0.4016170202646107,"score_spread":0.3722781938118266,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}