Results 161 to 170 of about 45,064 (208)

Testing the specificity of the diatom test: search for false-positives

Medicine, Science and the Law, 2011
The diatom test is widely used by forensic pathologists as proof of drowning, notwithstanding some criticisms mainly concerning the occurrence of false-positive results (presence of diatoms in the tissues of subjects who died from causes other than drowning).
BORTOLOTTI, Federica, DEL BALZO, Giovanna, CALZA, Riccardo, VALERIO, Fernando, TAGLIARO, Franco   +4 more
openaire   +3 more sources

Testing the response of benthic diatom assemblages to common riverine contaminants

Science of The Total Environment, 2021
Benthic diatoms constitute keystone assemblages in riverine ecosystems, and their structure is used to support regulatory water quality assessment. However, no standard ecotoxicological tests exist using integrated responses of the benthic diatom assemblages.
Tânia, Vidal, Martha, Santos, Joana I, Santos, Ana T, Luís, Mário J, Pereira, Nelson, Abrantes, Fernando J M, Gonçalves, Joana L, Pereira   +7 more
openaire   +2 more sources

Testing attachment point theory: diatom attachment on microtextured polyimide biomimics

Biofouling, 2006
This paper explores diatom attachment to a range of laser etched polyimide surfaces to directly test 'attachment point theory'. Static bioassays were conducted on microtextured polyimide surfaces using four diatom species, Fallacia carpentariae, Nitzschia cf. paleacea, Amphora sp. and Navicula jeffreyi with cell sizes ranging from 1-14 microm.
Scardino, A.J., Harvey, E., de Nys, R.
openaire   +3 more sources

Diatom test with Soluene-350 to diagnose drowning in sea water

Forensic Science International, 1999
The authors tested the Soluene-350 method to detect diatoms in three cases of sea water drowning. The negative results obtained in all three cases prompted us to re-test the method on samples of fresh water and sea water microalgae. The experiment showed that the siliceous frustule of sea water diatoms is solubilized by Soluene-350 while that of fresh ...
LAURA SIDARI, DI NUNNO, Nunzio, FULVIO COSTANTINIDES, MAURO MELATO   +3 more
openaire   +4 more sources

On testing difference equations for the diatomic eigenvalue problem

Journal of Computational Chemistry, 1988
AbstractThe determination of the vibration‐rotation eigenvalues (for an electronic state of a diatomic molecule) is done using various algorithms, where the differential equation y″ + f(r)y = 0 (with given initial values yo and y′o at an origin ro) is to be integrated, that is, to be replaced by a “convenient” difference equation (DE).
Hafez Kobeissi, Majida Kobeissi, Ali El Hajj   +2 more
openaire   +1 more source

A test on different aspects of diatom processing techniques

Journal of Applied Phycology, 2007
A factorial experiment was carried out in order to assess the effects of four treatment steps in diatom processing techniques (the quantity of hydrogen peroxide added to the sample, the time allowed to the digestion reaction, the use of centrifugation and the method used to settle the frustules onto the coverslip) on different aspects of the quality of
Saúl Blanco, Irene Álvarez, Cristina Cejudo   +2 more
openaire   +1 more source

The Diatom Test for Drowning in Ontario

Canadian Society of Forensic Science Journal, 1996
The diatom test for drowning has proved to be a useful, reliable, and valid test for the postmortem diagnosis of drowning in hundreds of cases of drowning in Ontario, Canada. In Ontario, the test has been largely applied to the femoral bone marrow which has facilitated the referral of cases from sites outside of the Office of the Chief Coroner for ...
openaire   +1 more source

CHARACTERISATION OF THE ADHESION OF FOULING DIATOMS ONTO TEST SURFACES

Diatom Research, 2007
The dominant presence of marine diatoms fouling the latest non-toxic, antifoul coatings has increased interest in characterising diatom adhesives and the mechanisms of their adhesion. In this study the adhesion of two benthic, fouling diatoms [Craspedostauros australis Cox and Haslea sp. Simonsen (Bacillariophyceae, Ochrophyta)] was measured on 23 test
A. Willis, J. Pacifico, T. M. Dugdale, R. Wetherbee   +3 more
openaire   +1 more source

Limbs found in water: investigation using anthropological analysis and the diatom test

Forensic Science International, 2000
We report the investigation, using a multi-disciplinary approach, of five cases of dismembered limbs which were recovered from Lake Ontario, Lake Erie and the Niagara River, and examined at the Office of the Chief Coroner for Ontario. In all cases, postmortem examination revealed that the limbs had been disarticulated in the postmortem period, by non ...
K L, Gruspier, M S, Pollanen
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A Test of the Influence of Cyclotron Resonance Exposures on Diatom Motility

Health Physics, 1994
An attempt was made to test the hypothesis (McLeod et al. 1987; Smith et al. 1987) that a certain combination of direct current and alternating current magnetic field exposures at room temperature results in an increase in motility of a marine diatom (Amphora coffeaeformis) to a maximum value.
A V, Prasad, M W, Miller, C, Cox, E L, Carstensen, H, Hoops, A A, Brayman   +5 more
openaire   +2 more sources