One reason has been a lack of suitable standards to allow them to roam freely around the Internet.
This work provides guidance on testing and evaluating detection devices, and may contribute to the establishment of suitable standards and normalized procedures.
Biodistribution data were calculated as percent of injected dose per gram tissue (% ID/g) with the aid of suitable standards of the injected dose, using the GraphPad Prism Software (San Diego, CA).
Based on the working tasks of an operator being taken into full consideration in this paper, on the one hand the table of measuring psychological characteristics is designed through the selection of special dimensions; on the other hand the table of performance appraisal is drafted through the choice of suitable standards of an operator.
This concern and the problem of suitable standards for matrix matched calibration via LA-ICP-MS limited the application of this concept.
In the absence of suitable standards for all metabolites, absolute calibration cannot be performed but due to the similar ionization mechanisms for all ketosteroids, the observed signal was considered to correlate relative metabolite amounts.
In addition, this method can overcome the lack of suitable standards that are available for constructing a calibration curve and reduce the associated "matrix effects" that are often associated with qPCR approaches.
The same urban weakening of suitable standards is occurring from a much lower benchmark, with just 57 per cent of the urban population having an improved facility by 2010, and one in five people in urban areas (19 per cent and growing) practicing open defecation.
As a result of the lack of a suitable standard reference material containing U, quantification was achieved by introducing liquid reference materials NBL U950a (uranium particles) and NBL U010 (uranium isotopic standard) via a desolvating nebulizer.
It had to realise some of the things it was doing were not of a suitable standard.
