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Activated sludge monitoring of a wastewater treatment plant using image analysis and partial least squares regression

https://doi.org/10.1016/j.aca.2004.12.061
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6/6 checkable references clean · checked 2026-07-23

Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.

13 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.

The 6 checked references that resolve
resolves10.1016/0043-1354(82)90056-2
Variation of sludge volume index with activated sludge characteristics
resolves10.2166/wst.1994.0388
Microbial aggregates in wastewater treatment
resolves10.1016/S0043-1354(96)00350-8
Image analysis to estimate the settleability and concentration of activated sludge
resolves10.1016/S1369-703X(01)00138-3
Characterisation of activated sludge by automated image analysis
resolves10.1007/3-540-48773-5_5
Biomass Quantification by Image Analysis
resolves10.1016/0167-7012(96)00816-0
Measurement of filamentous cyanobacteria by image analysis
The 13 references without a DOI — listed, not checked
no DOI — not checked10.1016/j.aca.2004.12.061_bib1
no DOI — not checked10.1016/j.aca.2004.12.061_bib2
no DOI — not checked10.1016/j.aca.2004.12.061_bib4
no DOI — not checked10.1016/j.aca.2004.12.061_bib7
no DOI — not checked10.1016/j.aca.2004.12.061_bib9
no DOI — not checkedA.L. Amaral, Image analysis in biotechnological processes: applications to wastewater treatment, Ph.D. Thesis, Braga, 2003.
no DOI — not checkedS. Rodrigues, Bulking Filamentoso: Análise, Diagnóstico, Soluções, Industrial Training Report, Braga, 2000.
no DOI — not checked10.1016/j.aca.2004.12.061_bib12
no DOI — not checked10.1016/j.aca.2004.12.061_bib13
no DOI — not checkedThe Mathworks, Matlab Documentation Set, CD-ROM, 2002.
no DOI — not checked10.1016/j.aca.2004.12.061_bib17
no DOI — not checked10.1016/j.aca.2004.12.061_bib18
no DOI — not checkedUmetri AB, User's Guide to SIMCA, CD-ROM, 1998.
What this badge says. CiteStamped means the CHECKABLE references of this work were clean at the dated check: each resolved to a known work in a public registry, and none carried a retraction notice at that time. It says nothing about the quality, findings, or importance of the work itself, and nothing about references deposited without a DOI.

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