Influence of the temperature on the viscosity measurements of solutions of a soil fulvic acid
Bibliographic record
Abstract
The influence of the concentration (ca. 45 to 300 mg L-1), the pH (3.0 to 8.0), the ionic strength (0.005 to 0.10 M), and the temperature (283 to 303 K) on the viscosimetric behaviour of solutions of a soil fulvic acid has been analysed, and their molecular parameters (length, thickness, and molecular volume) calculated. The results indicate that the polyelectrolytic behaviour of the fulvic acid is similar at all the temperatures, i.e., increasing the viscosity when reducing the ionic strength and to increase the temperature. With respect to the pH an initial decrease in the viscosity is obtained followed by a rise to the highest pH values. These variations have been interpreted by their molecular parameters as due to modifications of the structure of the molecules of the fulvic acid.Key words: fulvic acid, viscosity, temperature.
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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 | 0.000 | 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 | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 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".