Measurement of pH in Food Systems by Magnetic Resonance Imaging
Bibliographic record
Abstract
Magnetic resonance imaging (MRI) has been used to measure the nuclear relaxation times of the protons of water containing low concentrations (0.4mM) of the diethylenetriaminepentaaceticacid complex of manganese. Given that the manganese-binding equilibrium is dependent on the local pH, this forms the basis of a physically non-invasive method for quantitation of pH in three dimensions. The basic concepts are briefly described together with specific details of how this MRI method can be used to follow the pickling of garlic immersed in vinegar and of meatballs immersed in vinegar or a tomato sauce. On a eu recours à l'imagerie à résonance magnétique (IRM) pour mesurer les temps de relaxation nucléaire des protons de l'eau contenant de faibles concentrations (0,4 mM) du complexe diéthylènetriaminepentaacéticacide du manganèse. Étant donné que l'équilibre de liaison du manganèse est dépendant du pH local, cette méthode forme la base d'une méthode physiquement non intrusive de quantification du pH en trois dimensions. Les concepts de base sont brièvement décrits ainsi que des détails spécifiques sur la manière dont cette méthode IRM peut être utilisée pour suivre la macération d'ail immergé dans du vinaigre et de boulettes de viande immergées dans du vinaigre ou de la sauce tomate.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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".