Aqueous and Isotopic Geochemical Constraints on Gas and Heavy Oil Composition in the Border Plains Region, Central Alberta and Saskatchewan
Bibliographic record
Abstract
The biodegradation of petroleum and the formation of heavy oil is a common process globally, although the specific microbial mechanisms and aqueous chemistry that control this process are inadequately understood. Oil-water contacts and reservoir temperature are known to be dominant controls of the biodegradation rate (Peters & Moldowan, 1993, Connan et al, 1997; Head et al, 2003, Larter et al, 2003), although dissolved aqueous elements must control microbial pathways and mechanistic reaction rates. The release of nutrients to microbes through mineral dissolution is considered the rate limiting control on microbial metabolism and the breakdown of hydrocarbons (Rogers & Bennett, 1997, Head et al, 2003, Roling et al, 2003). Differentiating the aqueous dissolved elements that facilitate biodegradation is complicated by the variety of geologic conditions and numerous microbial mechanisms that result in the biodegradation of hydrocarbons.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".