Sentences with phrase «sample during a measurement»

Not exact matches

The quality control activity during production consists of taking samples from the run continuously, taking measurements on the samples immediately, and then plotting them rapidly on a Shewhart Chart.

The following day, carrying a heavy pack of sampling equipment over mud and ice, she stumbled a few times during a hike to a stream for measurements.

This information is important because if this chemical bond is not present, the dimer can be broken when manipulating the samples during lab analysis, thereby hindering accurate measurement of its concentration.

A urine sample taken during pregnancy allowed measurement of biomarkers for exposure to phenols in the CDC Atlanta Environmental Health Laboratory for US biosurveillance programmes.

If a sample is radiation - sensitive, it can be difficult to do the experiment at a synchrotron, where X-ray pulses tend to be longer and samples may be damaged during the measurement.

Radiocarbon dating of the charcoal samples provided an age for the shells; measurements of oxygen isotopes found in the clam fossils gave sea surface temperatures every 2 to 4 weeks during the clam's life.

Strangely, their electron energy loss spectroscopy measurements showed that both samples had a TiO2 interface plane and that the SrO layer had gone missing during the synthesis process.

Superimposed on the diurnal signal was a transition during the second sampling period to a surplus of total alkalinity (TA) and dissolved inorganic carbon (DIC) compared to ocean endmember TA and DIC measurements.

The study diet for that day of the cycle was provided, and blood sampling, RMR measurement, and dual - energy X-ray absorptiometry scanning procedures were identical to those used during visit CRC2.

Aliquots of the 38 plasma samples collected during each 24 - h GCRC admission were pooled as described in Subjects and Methods for measurement of average hourly plasma ghrelin concentrations.

Cai says that, during that time, while the northern hemisphere has been well sampled by cargo ships and projects led by wealthy countries north of the equator, very few direct measurements have been taken in the south.

According to the NOAA (here: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/co2nat.txt) the Vostok ice - core data covers a time - frame of about 420,000 years and during this time - frame we only have 283 measurement - samples.

Instrument measurements, oil sample analysis and visual inspections performed by onsite technicians during normal maintenance did not protect the gearbox Roberts exhibited.

My purpose here is to get a rough look at replicate tree samples and samples from the same site during the same time period in order to eventually estimate a simple measurement error and compare that error with the variations we see over the Yamal series in time.

[/ quote] The pre industrial CO2 data is based on ice core data, and a number of chemical measurements made during the 19 and 20th century, as was shown by Callendar, once the data was scrubbed to eliminate samples downwind from contaminated areas.

«The ATTREX payload will provide unprecedented measurements of the tropical tropopause layer,» said Eric Jensen, ATTREX principal investigator at NASA's Ames Research Center in Moffett Field, Calif. «This is our first opportunity to sample the tropopause region during winter in the Northern Hemisphere when the region is coldest and extremely dry air enters the stratosphere.»

The medical records that the underwriter gets from your doctor can illuminate your past, but the samples and measurements that the examiner takes during your exam lets the insurance company take the most recent medical information available into account.

During the time of conducting our study, the reliability of the HADS as a clinical screening tool was critically questioned noting that although the HADS was used in TIDES, different measures were recommended from that international study.36 These measures were the PHQ - 9 for depression and the GAD - 7 for anxiety.4 36 Both these measures are recommended in the international guidelines for mental health screening of patients with CF, 11 which are since being used in CF clinical settings.15 31 Because of the current shift away from using HADS as a screening tool for depression and anxiety in CF, and because of the small sample sizes in each group (online and paper - based), we did not test measurement invariance to determine if the online version of HADS is equivalent to the paper based version.