{"id":"W2150827577","doi":"10.1021/es026146a","title":"Microbial Respiration and Diffusive Transport of O<sub>2</sub>, <sup>16</sup>O<sub>2</sub>, and <sup>18</sup>O<sup>16</sup>O in Unsaturated Soils and Geologic Sediments","year":2003,"lang":"en","type":"article","venue":"Environmental Science & Technology","topic":"Groundwater and Isotope Geochemistry","field":"Earth and Planetary Sciences","cited_by":28,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Saskatchewan","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Fractionation; Environmental chemistry; Chemistry; Respiration; Isotope fractionation; Stable isotope ratio; Soil water; Soil respiration; Oxygen; Isotopes of carbon; Isotopes of oxygen; Isotope; Oxygen-18; Equilibrium fractionation; Isotope analysis; Radiochemistry; Total organic carbon; Soil science; Geology; Botany; Nuclear chemistry; Chromatography","routes":{"ca_aff":true,"ca_fund":true,"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":[0.0002389458,0.0004204594,0.0001900203,0.000226597,0.0002559876,0.0003914868,0.0003025563,0.0002946157,0.0002509625],"category_scores_gemma":[0.0002657796,0.0002302664,0.0001726526,0.0002122839,0.0003133755,0.0004848645,0.0002709825,0.000246558,0.00005316124],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001016579,"about_ca_system_score_gemma":0.0004175137,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01112062,"about_ca_topic_score_gemma":0.009355308,"domain_scores_codex":[0.9999002,0.00001129275,0.000007805561,0.00004113299,0.00001952193,0.00002004356],"domain_scores_gemma":[0.9998899,0.00003416324,0.00003648207,0.000006011978,0.00001698807,0.00001641347],"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":[0.0003674529,0.00007651666,0.08712471,0.00007154932,0.00002049359,0.0001027628,0.0001178252,0.007793119,0.8986835,0.000359835,0.00003065745,0.005251661],"study_design_scores_gemma":[0.00007814214,0.000572853,0.3040838,0.00001508202,0.00004941739,0.0001551528,0.0005442487,0.16186,0.5309535,0.0008093521,0.0008370905,0.00004127395],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.999496,0.00004679515,0.0003275552,0.000009801241,6.244909e-7,0.000001898083,0.00002979006,0.000003416315,0.00008416727],"genre_scores_gemma":[0.9992638,0.00008711569,0.0004523036,0.000003693824,0.000001317355,0.000005662687,0.00005690864,0.000002310046,0.0001268886],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01112062,"threshold_uncertainty_score":0.02211177,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.00548826062212725,"score_gpt":0.1757793565192662,"score_spread":0.170291095897139,"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."}}