Contribution to the fine anatomy and histochemistry of birdseye sugar maple
Bibliographic record
Abstract
Light and transmission electron microscope observations of birdseye tissues in sugar maple revealed the following features in the xylem: inclined axial elements, vessels smaller and shorter than the ones found in adjacent normal xylem, occasional gaps between xylem cells, abnormal thickenings of vessel secondary walls, and absence of multi seriate rays. Histochemical and cytochemical tests also indicated that birdseye xylem was less lignified than adjacent normal xylem. When this figure appeared in more than five consecutive growth rings, collapsed and hypertrophied cells were observed at the beginning of rings. These abnormal cells seemed to show that cambial initials were injured at the start of the growing season. The injury apparently occurred following a pressure exerted on a group of fibres present in the inner bark, very close to the cambium. After forming these unusual cells, the cambium resumed production of more typical elements. In birdseye tissues, the phloem layer was reduced and rays showed many anomalies. These anatomical changes may have induced poor translocation of nutrients to the cambium, eventually leading to abnormal differentiation of xylem derivatives. High levels of ethylene may have stimulated phellogen activities that could have generated a pressure toward the cambium. Future studies on birdseye formation are also suggested.
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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 | 0.000 |
| 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) | 0.001 | 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".