{"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":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow","sts"],"consensus_categories":[],"category_scores_codex":[0.0007551505,0.0005502354,0.0005984308,0.0006148912,0.0005141444,0.00008754132,0.000509985,0.0005593736,0.0002310048],"category_scores_gemma":[0.00007661081,0.0005039024,0.0000673527,0.001018422,0.003968921,0.0007681695,0.0001431928,0.0005891899,0.00003839502],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001144448,"about_ca_system_score_gemma":0.00009839986,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0003360757,"about_ca_topic_score_gemma":0.0002492068,"domain_scores_codex":[0.9961364,0.0001294958,0.0007219386,0.001378948,0.000540492,0.001092707],"domain_scores_gemma":[0.9988985,0.00007665766,0.0002315529,0.0004693048,0.00002311332,0.0003008466],"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":[0.00009518663,0.0001452702,0.4716009,0.00004063528,0.00002217224,0.00005363348,0.0008772015,0.002813542,0.5092319,0.00003273021,0.00003620556,0.01505057],"study_design_scores_gemma":[0.002679363,0.0009056787,0.2069583,0.00008780129,0.00007253269,0.0005039869,0.003590901,0.006866809,0.7750722,0.001459946,0.0008288492,0.0009736145],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9974201,0.0008362122,0.00006076864,0.0002163537,0.00004950629,0.0006788509,0.0001393947,0.00007858362,0.0005202324],"genre_scores_gemma":[0.9985129,0.0008021751,0.0002090585,0.0002103666,0.00002942014,0.00001784119,0.0001591333,0.00001520095,0.00004392567],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.2658403,"threshold_uncertainty_score":0.9997413,"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."}}