The Role of Gamma-ray Spectrometry in Radon Risk Evaluation: A Case History from Oka, Quebec
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Bibliographic record
Abstract
Increasing eU concentrations, as measured by an airborne gamma-ray spectrometry survey, show a progressive and clear association with increasing indoor radon concentrations for an area near Oka, Quebec. The lowest average indoor radon concentrations (106 Bq/m 3 ) are associated with the lowest average eU concentrations (1 ppm), and the highest average indoor radon concentrations (1075 Bq/m 3 ) are associated with the highest eU concentrations (6 ppm). The results of the airborne gamma-ray spectrometry survey were used by public health officials to identify specific areas within and near a carbonatite intrusion where there is a risk of overexposure to indoor radon. The clear association between high eU concentrations and high radon in homes provided invaluable information for a number of land use and public health initiatives. The irrefutable association between high eU concentrations measured by airborne gamma-ray spectrometry and high radon concentrations makes airborne gamma-ray spectrometry a very effective predictive tool for the identification of areas with potential risk of overexposure to indoor radon, including areas without residential development. Resume Une augmentation des concentrations eU, mesurees lors d'un leve de spectrometrie gamma aeroporte, montre qu'il existe un lien clair et progressif avec l'augmentation des concentrations interieures de radon, dans une region a proximite de la localite de Oka au Quebec. Les plus faibles concentrations moyennes interieures en radon (106 Bq/m 3 ) sont associees aux concentrations eU (1 ppm) les plus faibles et, les plus fortes concentrations interieures en radon (1 075 Bq/m 3 ) sont associees aux plus fortes concentrations eU (6 ppm). Les resultats du leve de spectrometrie gamma aeroporte ont ete utilises par les autorites en sante publique pour reperer les endroits pouvant presenter des risques de surexposition au radon a l'interieur d'aires habitees situees au droit et a proximite d'une intrusion de carbonatite. Ce lien clairement etabli entre les concentrations eU et les concentrations interieures elevees en radon dans les habitations a constitue une information de premiere importance dans bon nombre de projets d'affectation des terres ou ayant une composante en sante publique. Ce lien indeniable entre les fortes concentrations eU mesurees par leve de spectrometrie gamma aeroporte et les fortes concentrations en radon montre que le leve de spectrometrie gamma aeroporte constitue un outils de reperage tres efficace des zones presentant des risques de surexposition aux concentrations interieures en radon, incluant les endroits sans projets de developpement domiciliaire.
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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 | 0.003 | 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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