Investigation of endothermal doublets occurring in the thermal decomposition of Ca(OH)2
Bibliographic record
Abstract
The presence of at least two different forms of Ca(OH)2 is confirmed by the results of a thermoanalytical study on the decomposition and re-hydration characteristics of Ca(OH)2. The study comprised a series of differential scanning calorimetry (DSC) experiments (at temperatures up to 700°C) performed in an atmosphere of a continuous flow of nitrogen pre-conditioned to various relative humidities ranging from 12 to 100%. The emergence of two separate and distinct decomposition endotherms occurred. The endothermic peak temperatures were dependent on the relative humidity and temperature history of the Ca(OH)2 samples. Exposure of CaO to higher temperatures and different humidities would appear to promote the formation of both crystalline and microcrystalline products. Under these conditions, higher temperatures give rise to formation of very crystalline products and after some time, vapor phase exposure promotes the formation of microcrystalline products. Factors affecting the formation of the different forms of Ca(OH)2 are described.
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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 | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".