Results 271 to 280 of about 45,128 (306)

Types of diatoms in China’s three major rivers and the possible application for an automatic forensic diatom test

Australian Journal of Forensic Sciences, 2014
The diatom test is the most reliable approach that provides scientific support for diagnosis of drowning. However, there are limitations, which, made forensic scientists stop using the test, such as the fact that it is time-consuming and lack of domain knowledge of the diatom identification.
Jian Zhao, Yuzhong Wang, Yanji Zhang, Sunlin Hu, Chao Liu   +4 more
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A test of methods for assessing water quality based on diatoms

SIL Proceedings, 1922-2010, 1991
Un programme de 3 ans a été proposé à la CEC afin de standardiser les méthodes biologiques basées sur les diatomées et établir un "indice de diatomée" unique qui pourrait être appliqué aux fleuves de la Communauté Européenne. L'objectif du présent article est de présenter les principaux résultats de l'étude sur l'indice diatomée de la CEC.
Coste, Michel, Descy, J.P.
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Testing of Diatomic Potential-Energy Functions by Numerical Methods

The Journal of Chemical Physics, 1963
An accurate and efficient numerical method of solving the radial Schrödinger equation for a diatomic molecule has been employed in two tests relating to approximate potential functions. First, quantitative estimates have been made of the errors in the approximate eigenvalue equation derived by Pekeris for the rotating Morse oscillator.
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On Nobert’s Test-Plate and the Striæ of Diatoms

Journal of Cell Science
ABSTRACT The limit of the resolvability of lines, or how small a space can exist between lines and still admit of their being separated under the microscope, appears to be an undecided point. Professor Queckett (‘Treatise on the Microscope,’ 3d ed., p.
W. S. Sullivant, T. G. Wormley
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An Evaluation of the Diatom Test in Deaths of Professional Divers

Medicine, Science and the Law, 1984
The use of the Diatom Test for drowning is controversial. In order to make a more realistic approach in the clinical field it was routinely used and evaluated in a study of the deaths of seventy professional divers where history and mode of death were accurately monitored.
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The dissolution of opaline silica of diatom tests in sea water

Journal of the Oceanographical Society of Japan, 1980
Two different series of measurements have been made of the solubilities and rates of solution in sea water of acid-washed siliceous tests of the diatomsThalassiosira decipiens andRhizosolenia hebetata. The kinetic approach was carried out on the assumption that the tests behave as identical solid spheres.
Akiyoshi Kamatani, John P. Riley, Geoffrey Skirrow   +2 more
openaire   +1 more source

Design and Testing of a New Diatom-Based Index for Heavy Metal Pollution

Archives of Environmental Contamination and Toxicology, 2017
The Tinto and Odiel river basins (SW Spain) are known worldwide for their unique water characteristics. Such uniqueness is a consequence of their flow through the Iberian Pyrite Belt (an area rich in metal sulphides) and the mining activities in the basins.
M. R. Fernández, G. Martín, J. Corzo, A. de la Linde, E. García, M. López, M. Sousa   +6 more
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Insights from the 3rd Italian Interlaboratory Ring Test on Benthic Diatoms

Nova Hedwigia
Abstract: Starting from 2007, ring tests on benthic diatom taxonomy and related indices has been spreading throughout Europe. Indeed, in the framework of the WFD application and the use of diatoms as indicators for the ecological status assessment of rivers, interlaboratory harmonization has been recognised as an important tool to assure the ...
Falasco, Elisa, Arnaud, Elena, Della Bella, Valentina, Wetzel, Carlos E., Zorza, Raffaella, Van de Vijver, Bart   +5 more
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Objective Diagnosis of Drowning by the "Diatom Test" - A Critical Review.

Forensic science review, 2004
The identification of diatoms in the body tissues to prove a death by drowning (known as the diatom test) dates back to the end of the 19th century. However, in recent decades the reliability of this method was disproved because of an alleged inaccuracy and high false positive rate; nonetheless, the matter is still highly controversial.
BORTOLOTTI, Federica, TAGLIARO, Franco, MANETTO G.   +2 more
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The Diagnostic Value of the Diatom Test for Drowning, II. Validity: Analysis of Diatoms in Bone Marrow and Drowning Medium

Journal of Forensic Sciences, 1997
Abstract In part two of this series, we investigated the characteristics of diatom frustules recovered from bone marrow and samples of putative drowning medium in case of freshwater drownings. A total of 52 cases of freshwater drowning with diatoms in the femoral bone marrow in which a sample of the putative drowning medium was also ...
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