A kinetic nephelometric method and instrument have been developed for the rapid determination of specific serum proteins by means of immunoprecipitin reactions. The maximum rate of change of scattered light intensity in an antigen-antibody reaction can be made to occur within 60 s after initiation of the reaction and provides a measure of the antigen concentration under antibody excess conditio...

BACKGROUND In order to obtain a reliable 177Lu-DOTATATE therapy dosimetry, it is crucial to acquire accurate and precise activity measurements with the radionuclide calibrator, the SPECT/CT camera, and the NaI(Tl) well counter. The aim of this study was to determine, in a clinical context, the accuracy and the precision of their activity quantification over a range of activities and time. Ninet...

Details of sample processing and the DNA extraction procedure have been previously described [1, 2]. Fifty milliliters of water samples, collected from Edgewater and Fairhope Beach and 100 mL from Goddard Beach were filtered through a 0.4 μm pore size (47 mm in diameter) polycarbonate membrane filter (GE Osmonics, Minnetonka, MA), and the sides of the funnels were rinsed twice with 20 ml of ste...

This paper explores the calibration of a classifier output score in binary classification problems. A calibrator is function that maps arbitrary score, testing observation, onto $[0,1]$ to provide an estimate for posterior probability belonging one two classes. Calibration important reasons; first, it provides meaningful probability; second, puts scores different classifiers on same scale compa...

The calibration of a partial discharge measuring system is carried out to determine its scale factor. This operation is performed in the complete test circuit by injecting across the terminals of the device under test a known charge generated by a traceable calibrator. The paper presents the calibration of four different partial discharge measuring systems, carried out by using a programmable r...

{ Wavefront correction by adaptive optics is often only partial and the image of a point-like source consists of a coherent peak superposed on a diiuse halo. If the point-spread function (PSF) is known, the object can be restored by deconvolution techniques. This PSF depends, however, strongly on atmospheric conditions which are variable and on the wavefront sensor reference source. For this re...

An uncertainty budget was constructed for the measurement of ethanol in blood by headspace gas chromatography. The uncertainty budget, covering the analytical range of ethanol concentrations up to 3.00 g/kg, included analytical uncertainty components, traceability uncertainty components, and effects caused by interindividual variation in blood water content. The analytical combined standard unc...

The assessment of primary calibrator purity is critical for establishing traceability to the International System Units (SI). Recently, quantitative nuclear magnetic resonance (qNMR) has been used as a determination method reference material development, and many related measurement techniques have designed acquire accurate reliable results. This review introduces recent advances in these (incl...