Data/hora: 02/06/2024 03:36:30

Provedor de dados: | 70
País: | Brazil
Título: | Tabular cusum control charts of chemical variables applied to the control of surface water quality
Autores: | Follador,Franciele A. C.; Boas,Márcio A. Vilas; Schoenhals,Marlise; Hermes,Eliane; Rech,Clovis.
Data: | 2012-10-01
Ano: | 2012
Palavras-chave: | Environmental planning; Control charts; Water quality.
Resumo: | The aim of this study was to evaluate the application possibility of tabular CUSUM control charts in the quality control of chemical variables in surface water. It was performed bibliographic and field research to collect water samples from 2003 to 2009, totaling 30 samples, some monthly and others semi-annual in order to observe the variables that regulate water quality. It was found that these charts may be applied to control the quality of river water; showing to be effective in the perception of changes during the process, especially for small samples (n=1) which there is no repetition as in this research. It was also concluded that the Mandurim River does not presents significant levels of pollution.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000500014
Editor: | Associação Brasileira de Engenharia Agrícola
Relação: | 10.1590/S0100-69162012000500014
Formato: | text/html
Fonte: | Engenharia Agrícola  v.32 n.5 2012
Fonte: | info:eu-repo/semantics/openAccess