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Record W4231746548 · doi:10.1002/9781118755341.ch6

Cobalt

2013· other· es· W4231746548 on OpenAlexaboutno aff
Stephen Roberts, Gus Gunn

Bibliographic record

Venuenot available
Typeother
Languagees
FieldEngineering
TopicExtraction and Separation Processes
Canadian institutionsnot available
FundersBritish Geological Survey
KeywordsCobaltCobalt extraction techniquesNickelEnvironmental scienceMetallurgyMaterials science

Abstract

fetched live from OpenAlex

The majority of cobalt production achieved through recovery as a by-product of copper and nickel mining is in three principal geological settings: hydrothermal, magmatic and lateritic, with major producing deposits found in the Democratic Republic of Congo (DRC) and Zambia. About 36 per cent of refined cobalt production is based on imported material and processed by countries that have no indigenous cobalt mining production. Cobalt is most commonly used as an alloy constituent or chemical compound, where its various properties are used in a diverse range of materials with commercial and military applications. Politically, recycling cobalt has become more important in order to become less dependent on a few primary suppliers. Substitutes for cobalt are constantly being sought mainly due to metal price volatility. The average concentration of cobalt in soils throughout the world is about 8 ppm, whereas it is 6450 ppm in mine sites in Ontario, Canada.

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 categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.900
Threshold uncertainty score0.000

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.002
Science and technology studies0.0020.001
Scholarly communication0.0030.001
Open science0.0010.002
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.1000.046

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 head0.011
GPT teacher head0.243
Teacher spread0.233 · 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.

Study designNot applicable
Domainnot available
GenreOther

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

Citations42
Published2013
Admission routes1
Has abstractyes

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