Mature Dental Enamel [Calcium Hydroxyapatite, Ca10(PO4) 6(OH) 2] by XPS
Bibliographic record
Abstract
The dental enamel from the buccal surface of a human premolar tooth (maxilla) was analyzed by x-ray photoelectron spectroscopy (XPS). Mature dental enamel has a crystalline structure containing up to 96 wt% inorganic material, and is principally comprised of calcium hydroxyapatite [Ca10(PO4) 6(OH) 2, HAP]. The XPS analysis was performed with a Kratos Analytical Axis 165 spectrometer using a monochromatic AlKα source. In addition to a survey spectrum, core level spectra of the Ca 2p, O 1s, P 2p, and C 1s orbitals were collected. The data are consistent with the surface being predominately calcium hydroxyapatite, with trace contaminants (Na, Si, N, S) observed.
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How this classification was reachedexpand
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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; both teacher heads agree on what is shown here.
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".