The unique high-resolution multi-collector ICP-MS Nu1700, has been used to provide simultaneous interference-free measurements of 28Si, 29Si and 30Si abundances with an average limiting precision of ± 0.04‰ on δ30Si.
However, ultrasound dating was not available, limiting precision of gestational age estimates.
Key challenges and limitations are poor data quality or poor medical and drug histories arising from lapses in memory (particularly due to late presentation to the first ANC visit) and the inadequacy of existing medical records to confirm reported exposures to medicines – both of which limit precision of whether and when drug exposure might have occurred.
By using an error-gram, limits of precision of ±20% for both test and reference method give predicted limits of agreement of 28.3% [ 2].
Important differences between the two studies are the smaller sample size in the current study, which limits the precision of the estimates, and the use of a geographically based sample, which limits bias due to changes in referral patterns.
In this case, the following issues have to be addressed: detection and quantification limit, precision, stability of analyte, specificity, interfering compounds etc.
A portion of his scholarly research has, with time, become old-fashioned, but within limits the precision of his documentation is almost always impeccable, even over details on which it has been challenged by literary opponents.
The chumminess of bosons limits the precision of today's best atomic clocks.
It is explained how the experimental set-up limits the precision of the ABS.
Measurement of standards indicates that this effect limits the precision of 35Cl/37Cl ratio determination to about 2%.
