Results 211 to 220 of about 2,158,364 (252)

Preservation of water samples

, 1982
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Water turbidity estimation in water sampled images

2020 5th International Conference on Advanced Technologies for Signal and Image Processing (ATSIP), 2020
This paper tackles the problem of estimating water turbidity by analyzing images. This computer-vision solution avoids to resort to use specific laboratory instruments and, hence facilitates the water characterization in situ. Our contribution consists in designing a whole image processing chain composed of pre-processing, segmentation, feature ...
I. Montassar, Amel Benazza-Benyahia
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Water sampling: Traditional methods and new approaches in water sampling strategy

TrAC Trends in Analytical Chemistry, 2007
This article outlines the issues that need to be considered when planning water sampling for chemical monitoring and provides guidance on the work required. In addition, it considers the limitations associated with current monitoring practices based on spot sampling and presents some existing technologies that may used to complement standard spot ...
Yolanda Madrid, Zoyne Pedrero Zayas
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Sampling Methods in Surface Waters

2007
The quality of output from an environmental sampling project is limited by whichever is the weakest component-sampling or analysis. Progress in analytical protocols, including the development of new and more sophisticated techniques described elsewhere in this handbook, results in the taking of samples increasingly becoming the quality-determining step
Mortimer, M., Mueller, J. M., Liess, M.
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Microdetermination of Vanadium in Water Samples

International Journal of Environmental Analytical Chemistry, 1986
The proposed method incorporates preconcentration of vanadium in water samples by its coprecipitation on ferric hydroxide at pH 8.0-9.6 which is redissolved in sulphuric acid; this is followed by extraction with N-phenylbenzohydroxamic acid (PBHA). The precision and accuracy of the newly developed method was ascertained by analysing EPA (Environmental ...
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Water sampling

Glasilo DZNM, 2000
Tehnički pododbor ISO/TC 147/SC 6 Međunarodne organizacije za normizaciju (ISO) zadužen za pripremanje norma vezanih za uzorkovanje vode obilježio je 1999. godine 25 godina djelovanja. U tome je razdoblju razrađeno i objavljeno 17 dijelova norme iz niza ISO 5667 "Kakvoća vode- Uzorkovanje", uključujući i ispravke određenih dijelova norme. Tijekom prvog
Flegar, Ljerka, Raspor, Biserka
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Water quality. Sampling

2013
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Water Samples: Treaty 8 Territory, Canada, 2012

Water samples embodying contradictory “representative samples” offering reliable evidence of environmental contamination of the Peace-Athabasca Delta, in settler colonial Canada, were produced through Indigenous environmental activism in 2012.
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Water sampling

Geochimica et Cosmochimica Acta, 1990
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Global water resources and the role of groundwater in a resilient water future

Nature Reviews Earth & Environment, 2023
Craig T Simmons, Chunmiao Zheng, Alan Macdonald   +2 more
exaly