نتایج جستجو برای: part matrixes

تعداد نتایج: 647504  

Journal: :Antimicrobial agents and chemotherapy 2016
Carlos Felipe Machado de Araujo Dalton Marcondes Silva Marcos Tavares Carneiro Sthefanie Ribeiro Marcela Fontana-Maurell Patricia Alvarez Marise Dutra Asensi Viviane Zahner Ana Paula D'Alincourt Carvalho-Assef

This study reveals the presence of different carbapenemase genes (blaKPC, blaNDM, blaGES, and blaOXA48-like genes) detected directly from water samples and clonal dispersion (by pulsed-field gel electrophoresis [PFGE] and multilocus sequence typing [MLST]) of KPC-2-producing Enterobacteriaceae in two important urban aquatic matrixes from Rio de Janeiro, Brazil, highlighting the role of aquatic ...

2014
F. Bakr

It is internationally recognized that validation is necessary in analytical laboratories. The use of validated methods is important for an analytical laboratory to show its qualification and competency. This work describes the methods for validation of gamma spectrometric analytical procedure in the determination of some gamma emitters in environmental samples. The method was tested and validat...

Journal: :Clinical chemistry 1979
M C Hsieh H K Berry

334 CLINICAL CHEMISTRY, Vol. 25, No. 2, 1979 is used at pH 7.4 and the fact that this interference depends on the type of tracer and pH at which the assay is performed are significant. Also the observation that the introduction of an ethanol precipitation step into the assay eliminates the effect of variation in the matrixes of commercial standards provides for a significant improvement in the ...

Journal: :journal of nanostructures 2012
g. nabiyouni a. yousofnejad m. seraj s. farshad akhtarianfar d. ghanbari

hard magnetic srfe12o19 (srm) nanoparticles were synthesized by a facile sonochemical reaction. the magnetic nanoparticles were then added to acrylonitrile-butadiene-styrene, polystyrene, polycarbonate, and poly sulfone to make magnetic nanocomposites. the magnetic properties of the samples were also investigated using an alternating gradient force magnetometer. the strontium ferrite nanopartic...

Journal: :International Journal of Environmental Research and Public Health 2020

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