R. Schifreen

Publications31
h-index5
Citations157
Highly Influential Citations2
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Accuracy, precision, and stability in measurement of hemoglobin A1C by "high-performance" cation-exchange chromatography.
We present a "high-performance" liquid-chromatographic method for determination of HbA1c with use of a carboxylate cation-exchange column, ethanolic mobile phases, and a hemolysate-storage reagent… Expand
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A quantitative automated immunoassay for fibrinogen/fibrin degradation products.
We describe a prototype quantitative automated assay for fibrin and fibrinogen degradation products, a particle-enhanced turbidimetric inhibition immunoassay (PETINIA) in the Du Pont aca discrete… Expand
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Analytical aspects of immobilized enzyme columns.
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Development and performance of a fully automated method for assay of C-reactive protein in the aca discrete clinical analyzer.
A quantitative immunoassay for C-reactive protein (CRP) has been developed for use in the Du Pont aca discrete clinical analyzer. Particle-enhanced turbidimetric immunoassay (PE-TIA) technology is… Expand
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Spectrophotometric and liquid-chromatographic studies of thymolphthalein monophosphate. Specifications for high-quality substrate for the measurement of prostatic acid phosphatase activity.
Fourteen lots of thymolphthalein monophosphate (TMP), disodium salt, obtained from 10 commercial suppliers were compared spectrophotometrically at 445 and 595 nm, liquid-chromatographically with… Expand
  • 7
What Motivates A Hacker
This chapter discusses some of the reasons that motivate hackers. An appreciation of what motivates someone to steal data from company is essential if one is intended to help prevent theft fromone's… Expand
  • 4
Effects of wavelength error and spectral band width on measurement of alkaline phosphatase activity.
We re-examined the effects of wavelength error and spectral band width on the measurement of alkaline phosphatase activity. The methods we studied is relatively insensitive to these two factors, a… Expand
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Controlling the cost of quality control.
TLDR
In the present era of expanding technology coexisting with economic constraint, appropriate quality control criteria to monitor laboratory performance must take into consideration not only analytic precision and medical utility, but also cost effectiveness. Expand
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10 – Access Control
Publisher Summary This chapter discusses automatic access control by the computer itself, using software and hardware products. To prevent unauthorized access to a personal computer (PC), some form… Expand
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Industry view on the regulation of ancillary reagents.
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