Soil Wetting Processes Studied by Magnetic Resonance Imaging: Correlated Study of Contaminant Uptake
Bibliographic record
Abstract
The wetting of an air-dried sample of an organic rich soil, Mossy Point, has been studied by proton magnetic resonance imaging. Spin density maps demonstrate heterogeneity of the sample at the level of the volumes sampled by each image unit despite general procedures designed to produce homogeneous samples. Heterogeneity in transverse relaxation times can be shown in a histogram. One component of the histogram shows relaxation times that shift to shorter values over a period of many days. This indicated the slow penetration of some of the water into an environment of reduced water mobility. The water may be entering into, and perhaps forming, micropores or a water swollen gel. Study of the kinetics of uptake of two different pesticides (2,4-D and Atrazine) in slurries of the air-dried soil in aqueous solutions of the pesticides requires at least two kinetic components. The slower entry of both takes place over a time period comparable to, or a little less than, the slow water uptake. Despite significant difference in the pesticide structures, both have a slow uptake rate near that of slow water penetration.
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 | 0.001 |
| 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) | 0.001 | 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 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".