Results 261 to 270 of about 1,613,220 (286)
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Limitations of Polybrene to Detect ABO Incompatibility
Vox Sanguinis, 1986Abstract. The ability of the manual Polybrene™ test to detect ABO incompatibility was assessed since the anti‐human globulin phase of the crossmatch is no longer mandated under many circumstances by the Standards of the American Association of Blood Banks, while the ability of the crossmatch to detect ABO incompatibility remains a requirement.
P D, Mintz, G, Anderson
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Quantum limited heterodyne detection of spin noise
Review of Scientific Instruments, 2016Spin noise spectroscopy is a powerful technique for studying spin relaxation in semiconductors. In this article, we propose an extension of this technique based on optical heterodyne detection of spin noise, which provides several key advantages compared to conventional spin noise spectroscopy: detection of high frequency spin noise not limited by ...
Cronenberger, Steeve, Scalbert, Denis
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Detectability of two-dimensional band limited noise
Vision Research, 1974The detectability of two-dimensional gaussian noise of limited spatial frequency content has been measured for several centre frequencies. These measurements are compared with measurements of the thresholds for the detection of spatial sine waves.
Koenderink, J J, van Doorn, A J
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Electrostatic Limit of Detection of Nanowire‐Based Sensors
Small, 2015Scanning gate microscopy is used to determine the electrostatic limit of detection (LOD) of a nanowire (NW) based chemical sensor with a precision of sub‐elementary charge. The presented method is validated with an electrostatically formed NW whose active area and shape are tunable by biasing a multiple gate field‐effect transistor (FET).
Alex, Henning +6 more
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Statistical properties of limit of detection test statistics
Talanta, 2003There are a number of possible ways to define the instrumental limit of detection (LOD) figure of merit and in the present work we define four such sample test statistics and derive their probability density functions (PDFs). Although the derived PDFs were found to be irreducible integrals, they are easily evaluated via numerical integration and can be
Montville, D, Voigtman, E
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Handling the limit of detection by extrapolation
Statistics in Medicine, 2012A general method of estimation with a variable observed subject to a limit of detection is introduced. It is based on extrapolation of the estimates obtained by increasing the limit of detection. Theoretical arguments support the method in some special cases, and it is explored by simulations.
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Nondetects, Detection Limits, and the Probability of Detection
Journal of the American Statistical Association, 1991Abstract When chemists cannot quantify the concentration in a field sample, they report nondetect instead of a numerical measurement. A data analyst faced with environmental data containing nondetects might assume that all nondetects are zeros, all nondetects are smaller than the smallest detect (numerical measurement), or, if a detection limit is ...
Diane Lambert +2 more
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The Limits of Detecting Abnormalities with Scanning
Australasian Radiology, 1967SUMMARYA theoretical comparison is made between two different criteria of statistical significance for detecting abnormalities in a scan. Criterion I utilizes as much of the available information content as possible, while Criterion II is applicable to visual reading of a photoscan or colour‐scan. The limits of detecting abnormalities with Criterion II
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Rapid Detection and Limitations of Molecular Techniques
Annual Review of Food Science and Technology, 2011Polymerase chain reaction (PCR) has become an important diagnostic tool in the detection of foodborne pathogens. Many PCR tests have been validated, harmonized, and commercialized to make PCR a standard tool used by food microbiology laboratories to detect pathogens in foods. Current PCR technology allows for rapid detection of pathogens in real time.
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Overview of Signal Detection Theory and Detection Limits
2019We described a historical development of signal detection theory from fundamental works by Neyman and Pearson to the receiver operating characteristic curve. We compared the U.S. Environmental Protection Agency regulatory method detection limit and the detection limit, as well as the International Organization for Standardization decision level for ...
Thomas M. Semkow, Xin Li, Liang T. Chu
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