Consulta: subjectFacets:"Measuring devices"
Registros recuperados: 3
Data/hora: 08/06/2024 11:26:06

Plataformas de coleta de dados para monitoramento ambiental de pisciculturas em tanques-rede.
Provedor de dados: 14
Autores: GIROTTO, M. V. F.; SILVA, C. M. da; SAMPAIO, F. G.; STECH, J. L.; MENDES, G. O.; DALSASSO, R. F.; BODELÃO, A. G; MATOS, F. T. de; MESSIAS, J. A.
Resumo: A publicação tem como objetivo apresentar as principais orientações para fundeio, manutenção e operação das plataformas de coleta de dados de qualidade da água e do sistema integrado de monitoramento ambiental (Sima), bem como os procedimentos rotineiros das sondas e das linhas de sensores de temperatura, tendo como base uma metodologia de baixo custo, eficiente e com confiabilidade na obtenção dos dados.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Piscicultura; Qualidade da Água; Equipamento; Coleta de Dados; Fish culture; Measuring devices; Water quality analysis; Environmental monitoring.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1133412

Interpretation of particle spectra of electronic counters by microscopical methods
Provedor de dados: 27
Autores: Bakker, C.; Prins, T.C.; Tackx, M.L.M.
1. Using monocultures or single species dominated natural phytoplankton, cell counts and volume estimations obtained by visual and electronic methods show reasonable agreement.Calibration seems possible (Figs.1-2).2. Further examples given (Fig. 3-4) show that microscopical identification of the volume peaks in electronic counter spectra of natural seston is not quite simple. Phytoplankton peaks may not be detected in the Counter spectrum. Shifts of Counter peaks to the left side of the visual spectrum may be found when cylindrical, elongated or needle- like phytoplankton dominate the sample.3. Both visual and electronic methods include potentially large errors. Possibly particle volume is either overestimated by the microscope and / or underestimated by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Detritus; Grazing; Measuring devices; Particle counters; Particle size; Phytoplankton; Zooplankton.
Ano: 1985
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3195

Calculations of results in grazing experiments using the counting method
Provedor de dados: 27
Autores: Tackx, M.L.M.; Van de Vrie, E.M.
Different formulae used in the literature for calculation of ingestion rates are reviewed. Their applicability is discussed in relation to two criteria: the occurrence of saturation of the feeding and/or growth of the food particles. It is shown by simulations that the differences in results obtained by calculating ingestion following a linear or an exponential model are restricted to a few percent. Calculation of ingestion rates by substantial over- or underestimation depending on the growth constant of the food particles and the grazing time.The formula I = Vk(C&lt;sub&gt;zt&lt;/sub&gt;C&lt;sub&gt;zo&lt;/sub&gt;e&lt;sup&gt;kt&lt;/sup&gt;)/N(I-e&lt;sup&gt;kt&lt;/sup&gt;) is proposed for the calculation of ingestion rates under saturated circumstances.It...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food intake; Food intake; Grazing; Ingestion; Mathematical analysis; Measuring devices; Phytoplankton; Zooplankton.
Ano: 1985
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3212