{"id":"W2104011082","doi":"10.1039/c2an35087d","title":"Highly sensitive and selective analysis of urinary steroids by comprehensive two-dimensional gas chromatography combined with positive chemical ionization quadrupole mass spectrometry","year":2012,"lang":"en","type":"article","venue":"The Analyst","topic":"Analytical Chemistry and Chromatography","field":"Chemistry","cited_by":20,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"National Center for Research Resources; National Institute of General Medical Sciences; World Anti-Doping Agency; Partnership for Clean Competition","keywords":"Chemistry; Chromatography; Mass spectrometry; Chemical ionization; Gas chromatography; Detection limit; Analytical Chemistry (journal); Selected ion monitoring; Quadrupole mass analyzer; Ion; Triple quadrupole mass spectrometer; Gas chromatography–mass spectrometry; Ionization; Selected reaction monitoring; Tandem mass spectrometry; Organic chemistry","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0009605482,0.0008941866,0.0008945624,0.001134082,0.0003600188,0.0004789983,0.0008428741,0.0007463963,0.000747553],"category_scores_gemma":[0.001080467,0.0003358487,0.0004771704,0.0008509633,0.0006024934,0.0004972888,0.0007916941,0.000651074,0.0005470495],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0006515873,"about_ca_system_score_gemma":0.001373109,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.002866433,"about_ca_topic_score_gemma":0.007358616,"domain_scores_codex":[0.9979226,0.0002084283,0.00007399271,0.0004657592,0.001226394,0.0001028843],"domain_scores_gemma":[0.9993964,0.0001664086,0.00006814569,0.00004375518,0.0002683061,0.00005695116],"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":[0.0001486845,0.00007722266,0.004630184,0.0002279897,0.00007989479,0.00006479253,0.00004005759,0.0003684711,0.9583684,0.000200135,0.0006107214,0.03518353],"study_design_scores_gemma":[0.00007437761,0.000829032,0.04031724,0.00004617696,0.0002041182,0.001868508,0.00008320735,0.0154143,0.9240605,0.0005703608,0.01640048,0.0001317107],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.5554675,0.0302457,0.3961008,0.0006241612,0.0002749118,0.0008197104,0.00487896,0.004810266,0.006778014],"genre_scores_gemma":[0.6260072,0.008769327,0.3546852,0.001197505,0.0002056083,0.0006347078,0.002632369,0.0001556643,0.005712455],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.002866433,"threshold_uncertainty_score":0.005699515,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.004869074182702411,"score_gpt":0.2155115016558812,"score_spread":0.2106424274731788,"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."}}