{"id":"W2017475056","doi":"10.1021/ed077p1486","title":"Teaching Sample Preparation in the Undergraduate Laboratory","year":2000,"lang":"en","type":"article","venue":"Journal of Chemical Education","topic":"Experimental Learning in Engineering","field":"Engineering","cited_by":4,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Winnipeg","funders":"","keywords":"Laboratory safety; Undergraduate research; Sample (material); Mathematics education; Engineering physics; Chemistry; Medical education; Engineering; Chromatography; Psychology; Medicine; Organic chemistry","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":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002161134,0.00005456516,0.00006530857,0.00004436115,0.00001292711,0.00002220959,0.0001031783,0.00003137417,0.00003386311],"category_scores_gemma":[0.00007386431,0.00004446683,0.00002451885,0.00009462638,0.000007588074,0.0001766518,0.00000197102,0.0003069363,0.000006488798],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000121909,"about_ca_system_score_gemma":0.00003550569,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.000008057475,"about_ca_topic_score_gemma":3.520308e-7,"domain_scores_codex":[0.9995407,0.00002833536,0.0002011493,0.0000360314,0.0001202481,0.0000735571],"domain_scores_gemma":[0.999776,0.00008004711,0.0000318447,0.00006876879,0.00001831954,0.00002500889],"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":[0.00003753964,0.0003294274,0.0007693128,0.00008315266,0.00003470194,0.000002467092,0.01128121,0.1475225,0.774399,0.0009798794,0.009575816,0.05498501],"study_design_scores_gemma":[0.001565726,0.0002790139,0.004819039,0.0007590369,0.00008251129,0.0003250089,0.00387024,0.08461588,0.5008538,0.00798496,0.393857,0.0009878156],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9961495,0.0003491975,0.000329802,0.0003598338,0.0001847948,0.00003738241,3.806185e-7,0.00002012344,0.002568965],"genre_scores_gemma":[0.9962659,0.0000195584,0.003362056,0.00006995463,0.000245462,0.000004017043,0.000002819955,0.000009990488,0.00002023791],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.3842812,"threshold_uncertainty_score":0.1813305,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.003872811751211231,"score_gpt":0.2592895519363795,"score_spread":0.2554167401851683,"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."}}