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Preparation of Rho Alumina

2004· article· en· W565416631 on OpenAlex
Taichi Sato

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

VenueShigen-to-Sozai · 2004
Typearticle
Languageen
FieldMaterials Science
TopicAdvanced ceramic materials synthesis
Canadian institutionsQueen's University
Fundersnot available
KeywordsBoehmiteGibbsiteAmorphous solidMaterials scienceDehydrationAluminiumAluminium oxideMineralogyAnalytical Chemistry (journal)ChemistryCrystallographyMetallurgyOrganic chemistry

Abstract

fetched live from OpenAlex

The crystalline aluminium hydroxides of hydrargillite-I (synonym of gibbsite) and II (H-I, II) and bayerite-I and II (B-I, II), in which I and II consist of the coarse and fine particles, respectively, were heated at 200-400°C under reduced pressure. The starting materials were checked up by electron microscopy and thermal analysis (TG and DTA), and then the resulting products were examined by x-ray diffraction study. Consequently, it was found that upon heating under reduced pressures at 0.667-6.67 Pa, amorphous alumina was formed from H-I and II bearing no relation to the heating rate at 1.25 or 5°C m-1, and similarly amorphous alumina was also formed from B-I and II at the rapid heating rate of 5°C m-1 ; while very poor crystalline alumina, which is regarded as the material corresponding to rho alumina (ρ-alumina) was obtained at the slow heating rate of 1.25°C m-1 from B-II, and a mixture of boehmite and ρ-alumina was obtained from B-I at the same heating rate.Accordingly it is seen that a ρ-alumina is prepared from the dehydration of bayerite which consist of fine particles by heating at 200-400°C at the slow rate under reduced pressure.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
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 score0.004
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
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)0.0010.002

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 head0.302
Teacher spread0.291 · 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