Characterization of Residue (C5-C7) Asphaltene (Soluble in n-Heptane but Insoluble in n-Pentane)
Bibliographic record
Abstract
(C5-C7) asphaltene(soluble in n-heptane but insoluble in n-pentane) of Canada oilsand bitumen vacuum residue(VTB) was charactered and compared with n-pentane asphaltene and n-heptane asphaltene with the help of GPC,XRD,1H-NMR,SEM measurements and HyperChem simulation.(C5-C7) asphaltene has a small yield of 9.80% and composes mainly small moleculars,whose average structure unit possesses the lowest aromaticity and aromatic ring number but maximum naphthenic ring number(2.60).The length of(C5-C7) asphaltene alkane chains connected with aromatic rings is 0.5 more carbons than the other two asphaltenes.There is no aromatic sheet stacking structures existing in(C5-C7) asphaltene,which is different from n-pentane and n-heptane asphaltenes.(C5-C7) asphaltene has the biggest stable energy(266.73 kJ/mol),leading to a worst stability,whose particles have a large dimension and smooth surface.
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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 | 0.000 | 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 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".