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Record W2123578840 · doi:10.1081/dis-200040234

Asphaltene Self‐Association

2005· article· en· W2123578840 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueJournal of Dispersion Science and Technology · 2005
Typearticle
Languageen
FieldChemistry
TopicPetroleum Processing and Analysis
Canadian institutionsUniversity of Calgary
Fundersnot available
KeywordsAsphalteneChemistryAlkylMonomerAlkaneStackingOrganic chemistryHeteroatomMolar massChemical engineeringHydrocarbonPolymer

Abstract

fetched live from OpenAlex

Recent characterizations of asphaltene structures suggest that asphaltene monomers may consist of several small polynuclear aromatic clusters linked by alkyl chains and containing a variety of heteroatoms. This structure lends itself to the view that asphaltenes self‐associate in a manner analogous to oligimerization rather than simple stacking. If asphaltenes are assumed to be oligimers, some of the interesting features of asphaltene behavior can be explained in a self‐consistent approach, including: measured changes of asphaltene molar mass in different solvents and at different temperatures; the precipitation of asphaltenes from alkane‐diluted heavy oils; and the interfacial behavior of asphaltenes. Recent work in these areas indicates that asphaltene monomers are in the order of 1000 to 2000 g/mol and that self‐associated asphaltenes consist of two to six monomers per aggregate on average.

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.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.237
Threshold uncertainty score0.148

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.005
GPT teacher head0.244
Teacher spread0.239 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it