Bibliographic record
Abstract
Unlike the mononuclear aromatics, the production capacity for purified bi- and tri-nuclear aromatic hydrocarbons is more limited. The production capacity of pure naphthalene is of the order 10 6 t/a, and that of pure anthracene is of the order 10 4 t/a. Other bi- and tri-nuclear aromatic hydrocarbons are purified at capacities one or more orders of magnitude less. The market size for naphthalene and anthracene are determined predominantly by use in production of phthalic anhydride and anthraquinone, respectively. Naphthalene is industrially produced from coal tar by separation, as well as from refined petroleum by hydrodealkylation and separation. Anthracene is industrially produced only from coal tar by separation. The physical and aromatic properties of bi- and tri-nuclear aromatic hydrocarbons that affect separation and reactivity are discussed. An overview of the industrial production of bi- and tri-nuclear aromatics is provided with a discussion of the conversion and separation steps required.
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 | 0.000 |
| 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) | 0.014 | 0.001 |
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; both teacher heads agree on what is shown here.
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".