A Study of Loblolly Pine Growth Increments—Part III Refining Characteristics of Tracheids from Kraft Pulps
Bibliographic record
Abstract
Growth increments of loblolly pine were divided into five growth zones and kraft-pulped according to four different digestion schedules of 1 1/2, 1 3/4, 2, and 3 hours. Each of the 20 pulps was subjected to four periods of beating and Canadian Standard Freeness (CSF) was determined for each. It was found that all pulps independent of the extent of digestion or origin of wood from the growth ring had about the same CSF after short periods of beating. After 35 minutes in the beater, latewood pulp freeness was drastically reduced whereas earlywood pulps changed very little. In general, significantly less energy, as indicated by shorter beating times, was needed for latewood pulps to achieve a specific CSF level than for earlywood pulp. Pulps of low yield were easier to refine than those of high yield. Scanning electron microscopic observations revealed that all pulps underwent a tracheid cell-wall peeling sequence. The layer removed from latewood tracheids by beating separated into long fibrillar bundles while earlywood lamellae freed from tracheids remained intact. The influence of this external fibrillation was attributed to differences between the pulps in refining.
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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) | 0.000 | 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 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".