Investigation of charcoal and activated charcoal for microwave absorbers
Bibliographic record
Abstract
Abstract The effects of the microwave heating process and the behaviour as absorbent materials of charcoals obtained from Eucalyptus urograndis wood, macauba endocarp, and lignin, in the activated and non‐activated forms, were investigated. The dielectric properties were measured with the coaxial probe method, and the values of loss tangent obtained for all the materials characterize them as absorbers. Heating tests were performed with materials in the raw form and also mixed with sand, a transparent material to microwave radiation. A factorial design of experiments was performed, and the effect of microwave power and mass concentration of materials over heating rate was studied. Both factors had a significant and positive influence on the heating rate of the seven analyzed materials. The carbon activation process increased the absorption and heating potential, due to the greater surface area and porosity generated by the process. The highest values of heating rate were obtained in the tests carried out with Eucalyptus ‐activated carbon.
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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 | 0.001 | 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".