<sup>1</sup>H NMR, Rheology, and Bottle Testing of HPAm/Cr(III) Acetate Micro Gels
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Bibliographic record
Abstract
Abstract Solutions formulated at 40°C with partly hydrolyzed polyacrylamide (HPAm) and Cr(III) acetate 50% active were monitored for 240 hr using 1H nuclear magnetic resonance (1H NMR). The HPAm concentration was kept constant at 2,500 mg/L (which is slightly below the critical polymer concentration) and the HPAm to Cr(III) acetate weight ratio ranged from 5:1 to 60:1. Changes in the 1H NMR transverse relaxation (T 2) of the solutions were dominated by the chemistry of Cr(III) acetate. 1H NMR detected changes immediately after HPAm started reacting with Cr(III) acetate. These changes were undetectable by rheology or bottle testing of the studied solutions. Keywords: 1H NMRCDGCr(III) acetateHPAmpolyacrylamide gels ACKNOWLEDGMENTS The authors thank the UNB MRI Centre (supported by an NSERC MFA award) for allowing us to use the mq10 NMR analyzer and for the technical support. The authors thank Mr. Robert Sydansk, from Sydansk Consulting Services, for his comments. The authors are grateful to Anton Paar USA for the rheology measurement and to NSERC for the Discovery Grant to support this project. Notes 1 CitationSydansk, R. D. (2007) from Sydansk Consulting Services, Centennial, CO, email message to author, June 18, 2007. R. D. Sydansk from Sydansk Consulting Services, Centennial, CO, email message to author, June 18, 2007.
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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 | 0.000 | 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 | 0.001 |
| 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 it