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  2. Detection limit - Wikipedia

    en.wikipedia.org/wiki/Detection_limit

    The figure below illustrates the relationship between the blank, the limit of detection (LOD), and the limit of quantitation (LOQ) by showing the probability density function for normally distributed measurements at the blank, at the LOD defined as 3 × standard deviation of the blank, and at the LOQ defined as 10 × standard deviation of the ...

  3. Calibration curve - Wikipedia

    en.wikipedia.org/wiki/Calibration_curve

    A calibration curve plot showing limit of detection (LOD), limit of quantification (LOQ), dynamic range, and limit of linearity (LOL).. In analytical chemistry, a calibration curve, also known as a standard curve, is a general method for determining the concentration of a substance in an unknown sample by comparing the unknown to a set of standard samples of known concentration. [1]

  4. Limit (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Limit_(mathematics)

    In mathematics, a limit is the value that a function (or sequence) approaches as the argument (or index) approaches some value. [1]

  5. Forensic chemistry - Wikipedia

    en.wikipedia.org/wiki/Forensic_chemistry

    Standards are also used to determine the instrument's limit of detection and limit of quantification for various common substances. [47] Calculated quantities must be above the limit of detection to be confirmed as present and above the limit of quantification to be quantified. [47] If the value is below the limit the value is not considered ...

  6. List of limits - Wikipedia

    en.wikipedia.org/wiki/List_of_limits

    This is a list of limits for common functions such as elementary functions. In this article, the terms a , b and c are constants with respect to x . Limits for general functions

  7. Process window index - Wikipedia

    en.wikipedia.org/wiki/Process_Window_Index

    Process capability is the ability of a process to produce output within specified limits. [1] To help determine whether a manufacturing or business process is in a state of statistical control, process engineers use control charts, which help to predict the future performance of the process based on the current process.

  8. This Family Drives 350 Miles For What Could Be A Common ...

    projects.huffingtonpost.com/dying-to-be-free...

    As of December 2015, only 29,157 doctors were approved to prescribe buprenorphine. Just 18,600 are listed on the government’s publicly searchable Treatment Locator, and fewer than 10,000 can treat the legal limit of 100 patients each, according to a Huffington Post analysis of government data. Less than 4 percent of certified doctors practice ...

  9. Quantization (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Quantization_(signal...

    Rate–distortion optimized quantization is encountered in source coding for lossy data compression algorithms, where the purpose is to manage distortion within the limits of the bit rate supported by a communication channel or storage medium.