排序方式: 共有49条查询结果,搜索用时 15 毫秒
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L. de Arcangelis H. J. Herrmann M. Kolb René Thomas C. Amitrano L. Peliti M. Saber G. Weisbuch Sara A. Solla F. Bagnoli A. Francescato R. Livi S. Ruffo Pablo Tamayo Michel Droz Peter Jörg Plath S. Romano Yves Pomeau Stéphane Zaleski D. Stauffer Luciano R. da Silva Alex Hansen Stéphane Roux Antonio Coniglio B. Derrida Henrik Flyvbjerg Naeem Jan Dietrich Stauffer Peter Grassberger A. Zippelius K. E. Kurten Werner Krauth Jean -Pierre Nadal Marc Mézard Per Bak Chao Tang Itzhak Webman M. L. Martins H. F. V. Resende C. Tsallis A. C. N. Magalhaes 《Journal of statistical physics》1989,55(5-6):1333-1359
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Comparison of analytical tools and biological assays for detection of paralytic shellfish poisoning toxins 总被引:1,自引:0,他引:1
A. R. Humpage V. F. Magalhaes S. M. Froscio 《Analytical and bioanalytical chemistry》2010,397(5):1655-1671
The paralytic shellfish poisoning toxins (PSTs) were, as their name suggests, discovered as a result of human poisoning after
consumption of contaminated shellfish. More recently, however, the same toxins have been found to be produced by freshwater
cyanobacteria. These organisms have worldwide distribution and are common in our sources of drinking water, thus presenting
another route of potential human exposure. However, the regulatory limits for PSTs in drinking water are considerably lower
than in shellfish. This has increased the need to find alternatives to the mouse bioassay, which, apart from being ethically
questionable, does not have a limit of detection capable of detecting the PSTs in water at the regulated concentrations. Additionally,
the number of naturally occurring PSTs has grown substantially since saxitoxin was first characterised, markedly increasing
the analytical challenge of this group of compounds. This paper summarises the development of chromatographic, toxicity, and
molecular sensor binding methodologies for detection of the PSTs in shellfish, cyanobacteria, and water contaminated by these
toxins. It then summarises the advantages and disadvantages of their use for particular applications. Finally it recommends
some future requirements that will contribute to their improvement for these applications. 相似文献
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The present work offers new equations for phase evaluation in measurements. Several phase shifting equations with an arbitrary but constant phase shift between captured intensity signs are proposed. The equations are similarly derived as the so-called Carré equation. The idea is to develop a generalization of Carré equation that is not restricted to four images. Errors and random noise in the images cannot be eliminated, but the uncertainty due to their effects can be reduced by increasing the number of observations. An experimental analysis of the mistakes of the technique was made, as well as a detailed analysis of mistakes of the measurement. The advantages of the proposed equation are its precision in the measures taken, speed of processing and the immunity to noise in signs and images. 相似文献
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