{"id":"W1988156377","doi":"10.1002/rcm.1547","title":"Probing the molecular weight distributions of non‐boiling petroleum fractions by Ag <sup>+</sup> electrospray ionization mass spectrometry","year":2004,"lang":"en","type":"article","venue":"Rapid Communications in Mass Spectrometry","topic":"Mass Spectrometry Techniques and Applications","field":"Chemistry","cited_by":25,"is_retracted":false,"has_abstract":true,"ca_institutions":"Imperial Oil (Canada)","funders":"","keywords":"Chemistry; Mass spectrometry; Electrospray ionization; Asphaltene; Electrospray; Analytical Chemistry (journal); Toluene; Molar mass distribution; Chromatography; Organic chemistry; Polymer","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":[0.0001422174,0.000399175,0.000142272,0.0005761269,0.000141802,0.0003564461,0.0003286836,0.0002791793,0.00175672],"category_scores_gemma":[0.0004403898,0.0001154213,0.0001285169,0.0003547852,0.0002536396,0.0005565622,0.0002321864,0.0003316626,0.0005719311],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002002411,"about_ca_system_score_gemma":0.0001579452,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0005122462,"about_ca_topic_score_gemma":0.0009175543,"domain_scores_codex":[0.9998523,0.00001158312,0.000008111499,0.00003388398,0.00007320643,0.00002096248],"domain_scores_gemma":[0.9996978,0.00010159,0.00008303116,0.00001581259,0.00008047687,0.00002135606],"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":[0.00005957767,0.00001050282,0.001319676,0.00004521818,0.00000641206,0.00004711009,0.00001745592,0.00006189659,0.9913638,0.00008187947,0.00004675792,0.006939755],"study_design_scores_gemma":[0.000004349605,0.00007294691,0.01213873,0.000007133587,0.0000130776,0.0002249569,0.00004391593,0.001516588,0.9843878,0.000158598,0.001424387,0.000007674241],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9494272,0.003250674,0.04070142,0.0001702392,0.0000456786,0.00006060088,0.001126636,0.0003692645,0.004848286],"genre_scores_gemma":[0.9629709,0.003190894,0.0298107,0.0002127693,0.00003550513,0.00004764215,0.001016034,0.00009333502,0.002622264],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.00175672,"threshold_uncertainty_score":0.005876839,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.008264742116855324,"score_gpt":0.2563666824550779,"score_spread":0.2481019403382226,"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."}}