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Record W2044346986 · doi:10.2113/gscanmin.41.4.1061

POINT DEFECTS IN PYRRHOTITE

2003· article· en· W2044346986 on OpenAlexaffvenue
E Froese

Bibliographic record

VenueThe Canadian Mineralogist · 2003
Typearticle
Languageen
FieldEngineering
TopicIron and Steelmaking Processes
Canadian institutionsGeological Survey of Canada
Fundersnot available
KeywordsPyrrhotiteGeologyPoint (geometry)GeometryMineralogyMathematicsPyrite

Abstract

fetched live from OpenAlex

On peut determiner la nature des defauts ponctuels dans la pyrrhotite a partir des mesures de composition et de la fugacite du soufre correspondante en examinant les equilibres des reactions proposees impliquant le FeS parfaitement ordonne, les especes hypothetiques concues pour exprimer les defauts ponctuels, et le soufre, S 2 . Il est possible d'illustrer cette demarche avec les donnees experimentales de Rau (1976) a 1257 K. Dans la pyrrhotite enrichie en soufre, le defaut predominant implique des lacunes sur le site Fe, ce qui concorde avec les mesures anterieures de la densite de la solution solide. Dans la pyrrhotite enrichie en fer, le defaut predominant impliquerait des atomes de Fe loges sur le site S. On peut exprimer les parametres thermodynamiques de Rau (1976) sur l'intervalle de temperature entre 820 et 1374 K en termes du changement dans l'energie libre standard de la reaction menant a la formation des lacunes sur les sites Fe, l'exces en energie libre molaire partielle a dilution infinie de □S et de FeS dans la solution solide binaire FeS - □S, et le changement en energie libre standard de la reaction menant a l'incorporation des atomes de Fe sur les sites S: ½ S 2 (gaz) = □S ΔG° = 49 229 + 113.695 T J mol - 1 Solution FeS - □S G e x ∞ □s = G e x ∞ FeS = -185 151 - 26.273 T J mol - 1 FeS = FeFe + S 2 (gaz) AG = 514 457- 226.773 TJ mol - 1 A la lumiere des donnees thermodynamiques derivees, il est possible de calculer, pour une composition donnee de pyrrhotite, la fugacite de S 2 et l'activite de FeS dans cet echantillon de pyrrhotite, quelle que soit la temperature envisagee.

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 machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.002
Threshold uncertainty score0.005

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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 head0.012
GPT teacher head0.197
Teacher spread0.185 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations1
Published2003
Admission routes2
Has abstractyes

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