Equilibrium Studies for the System Methane + Carbon Dioxide + Neohexane + Water
Why this work is in the frame
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Bibliographic record
Abstract
Four-phase equilibrium conditions (hydrate−liquid−liquid aq −vapor) were studied for the system methane + carbon dioxide + neohexane + water by the pressure search method. In addition, three-phase equilibrium conditions (hydrate−liquid−vapor) were determined for the same system in the absence of neohexane. Experimental conditions were varied in the temperature range of (275 to 285) K and the pressure range of (1.3 to 7.5) MPa. Equilibrium temperature and pressure values were found to agree, within the uncertainties herein reported, with existing literature values for both systems. The data were used to produce experimental contour plots that summarize the equilibrium temperature, pressure, and vapor composition on the same graph. It was observed that the equilibrium mole fraction of carbon dioxide in the vapor phase follows opposite trends in both systems, with respect to equilibrium pressure, at rather constant temperature. The data also suggest that hexagonal structure H equilibrium occurs at lower pressures and temperatures than cubic structure I (sI) when the vapor phase is methane rich; however, this phenomenon appears to be reversed as the equilibrium vapor phase becomes richer in carbon dioxide.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it