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Biological limit of detection, bld
Глоссарий по стандартизации, контролю и управлению качеством |
An older term that was commonly used to refer to an estimate of detection limit calculated from replicate measurements of a blank sample and replicate measurements of a low concentration sample. typically the estimate is given as the mean of the blank sample plus 2 sd of the variation observed for the blank sample plus 2 sd of the variation observed for a low concentration sample. in effect, bld equals lld (the lower limit of detection) plus 2 sd of the variation observed for the low concentration sample.
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Concentration, английский
- The amount of a substance present in a certain amount of soil, water, air, food, blood, hair, urine, breath, or any other media.
- Concentración
- N концентрация
- Концентрация; кучность
- The area covered by the diamonds as compared with the total area of the cutting surface of a surface-set bit.
- The volume of diamonds, expressed in percent, compared to the total volume of the crown of an im pregnated bit
- The percentage of acid compared with the volume of water added to produce a dilute solution.
- Концентрация. количество вещества, выраженное в единицах массы или молярных единицах, в единице объема жидкости или единице массы твердого тела. con. dence interval
- Концентрация. количество вещества, выраженное в единицах массы или молярных единицах, в единице объема жидкости или единице массы твердого тела.
Measurement, английский
- Set of operations having the object of determining a value of a quantity (1)
- Измерение. система мер.
- Измерение; замер
- The size, length, etc. of something which has been measured
- Измерение
- Обмер
- Оценка
- Измерение dust ~ измерение концентрации пыли
- Измерение. комплекс операций, имеющих целью определение значе-ния величины [32].
- The process of ascertaining the attributes, dimensions, extent, quantity, degree or capacity of some object of observation and representing these in the qualitative or quantitative terms of a data language. any empirical pursuit that places the observer outside his object of observation must consider measurement the fundamental process through which scientific constructs or models are linked to reality (->index, ->symptom). otherwise measurement is only one section in a circular process of computing a stable form. the traditional levels of measurement are nominal, ordinal, interval and ratio scales.
- The magnitude of the property of an object calibrated against one or more units of measure.
- Измерение. комплекс операций, имеющих целью определение значения величины [32].
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Bland-altman plot, английский
The display of paired-data from a comparison of methods experiment by plotting the differences between the test and comparative results on the y-axis versus the average of the test and comparative results on the x-axis. similar to a traditional “difference plot”, except that the average of the test and comparative results provides the x-value rather than the value of the comparative result alone.
Biasmeas, английский
Used here to represent the bias of a measurement procedure relative to a comparative method or a comparative group in proficiency testing.
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