Bibliographic record
Abstract
Understanding the transport mechanism of buried explosives in soil is crucial in order to implement an effective system for their detection. A major recurring problem is the representation of diffusion processes of these compounds on soils due their different and complex properties. The aim of this work was to describe the transport of 2, 4, 6 –Trinitrotoluene (TNT) on Ottawa sand using a mathematical model. The microscopic mass transfer of TNT on sand particles was studied using Scanning Electron Microscopy (SEM) coupled to Energy Dispersed X-ray Fluorescence Spectroscopy (EDAX). Samples of TNT on sand were analyzed varying the mass of the explosive and modifying pH conditions of sand in function of time. The images obtained from SEM showed smooth differences in the morphology and spatial distribution of the explosive on sand a few hours after sample preparation. This change in morphology and spatial distribution was found to be dependent both on the mass ratio of TNT in the sample and the pH of the sand. On the other hand, EDAX measurements showed a decrease in the nitrogen fluorescence signal intensity demonstrating that movement of TNT into the sand occurs after about eight hours; carbon measurements showed a similar behavior during this time, that is called dead time. In addition, the
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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 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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 teacher head, 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".