Viscometric Constants for Sodium Polystyrene Sulfonate Standards in Solvents of 0.1 M CH<sub>3</sub>COOH/0.2 M NaCl and 0.2 M CH<sub>3</sub>COOH/0.1 M CH<sub>3</sub>COONa at 25.0 °C
Bibliographic record
Abstract
The viscometric or Mark−Houwink constants K and a for sodium polystyrene sulfonate (NaPSS) standards in two different aqueous solvents (0.1 M CH 3 COOH/0.2 M NaCl and 0.2 M CH 3 COOH/0.1 M CH 3 COONa) were determined at 25.0 °C using a Ubbelohde viscometer. They are 3.288 × 10 - 3 mL·g - 1 and 1.908 × 10 - 3 mL·g - 1 for K and 0.788 and 0.851 for a for the above two solvent systems, respectively. These constants were then used for establishing the universal calibration relationship for a size exclusion chromatography column using the above two aqueous solvents as the mobile phase.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.002 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.003 |
| Insufficient payload (model declined to judge) | 0.009 | 0.004 |
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 source (direct Gemma or distilled Codex), 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".