Bibliographic record
Abstract
In the calcium-carbon-nitrogen (Ca-C-N) system there are two known ternary compounds: calcium cyanamide (CaCN 2 ) and calcium cyanide (Ca(CN) 2 ).Calcium cyanamide is commercially produced by the nitrogenation of calcium carbide, while calcium cyanide is manufactured by the reaction of calcium cyanamide with carbon in a fused salt melt.In addition to the industrial production of these compounds, it has also been proposed that they can act as intermediate species in natural diamond formation.There is very little information in the literature regarding the thermodynamic properties of the Ca-C-N system and in particular calcium cyanide.Since this compound apparently only forms as a complex in a molten salt under very specific conditions, then it has proven difficult to determine its thermodynamic properties.Previously, the authors have determined these properties and in the present research, this thermodynamic information was utilized to develop predominance area diagrams for the Ca-C-N system at various temperatures.The application of this thermodynamic information leads to an improved understanding of the mechanism of formation of calcium cyanide and also the factors which govern the optimization of the industrial production method.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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".