Blue-Jean Button Nickel: Prevalence and Prevention of Its Release from Buttons
Bibliographic record
Abstract
BACKGROUND: Nickel is a common cause of allergic contact dermatitis and is associated with metal buttons and snaps on blue jeans. OBJECTIVE: To determine the prevalence of nickel-positive metal buttons on blue jeans and the efficacy of nail polish in the prevention of nickel release. METHODS: We collected 62 pairs of new and preworn blue jeans. The metal buttons were tested for nickel with a dimethylglyoxime test kit, and one coat of clear nail polish was applied to nickel-positive buttons. Painted buttons were dried for 24 hours, and the jeans were washed on delicate cycle and retested for nickel. The jeans underwent a second wash/dry cycle and were retested. RESULTS: The prevalence of nickel-positive metal buttons on blue jeans was 16%. Ten pairs of jeans tested positive for nickel. All 10 pairs tested negative for nickel after the application of one coat of clear nail polish. Of these 10 pairs, seven pairs underwent two wash/dry cycles, and all seven tested negative for nickel after each cycle. CONCLUSION: The presence of nickel-positive blue-jean buttons is greater in new jeans than in preworn jeans. One clear coat of nail polish can prevent nickel release through two wash/dry cycles in a test environment.
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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) | 0.000 | 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".