Results 231 to 240 of about 394,842 (259)
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Tissue quantification in photon-limited microendoscopy
SPIE Proceedings, 2011This paper explores the use of Poisson sparse decomposition methods for computationally separating tumor nuclei from normal tissue structures in photon-limited microendoscopic images. Sparse decomposition tools are a natural fit for this application with promising preliminary results.
Zachary T. Harmany +4 more
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Determining limit of quantification in microbiology
EJPPS EUROPEAN JOURNAL OF PARENTERAL AND PHARMACEUTICAL SCIENCESThe determination of limit of quantification (LOQ) is one of the tasks specified in the validation process of a microbiological method. So far a detailed procedure for doing it is still lacking. Given the LOD (limit of detection), or data for estimating the LOD, we propose a procedure for determining the LOQ based on a Poisson confidence interval and ...
Jianping Jiang, E Albert, null Parker
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Evaluation of Approximate Methods for Calculating the Limit of Detection and Limit of Quantification
Environmental Science & Technology, 1999In a previous paper, a computational method was presented for determining statistically rigorous limits of detection and quantification. The main purpose of this study is to evaluate similar but less computationally complex methods. These approximate methods use data at multiple spiking concentrations, are iterative, can be derived from either ...
Michael E. Zorn +2 more
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Mass spectrometry-based peptide quantification: applications and limitations
Expert Review of Proteomics, 2005In various areas of research, proteomics and particularly the quantification of proteins and peptides renders a useful addition to biochemical experiments. The range of possible applications varies from supervision of concentration changes of relevant proteins during biogenesis to differential proteomics approaches, distinguishing, for instance ...
Stephanie, Pütz +3 more
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Limitations of diazomethane for the quantification of 15-Oxo-prostaglandin F2α
Biological Mass Spectrometry, 1977The relatively rapid formation of pyrazoline adducts is a serious side reaction in the esterification of 15-oxo-PGF2alpha with ethereal diazomethane under conditions used routinely in the chemical derivatization of prostaglandins.
A F, Cockerill +4 more
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The Limitations of Quantification in Local Historical Studies
Canadian Review of American Studies, 1978Robert Doherty. Society and Power: Five New England Towns, 1800-1860. Amherst: University of Massachusetts Press, 1977. 128 pp. Robert D. Mitchell. Commercialism and Frontier: Perspectives on the Early Shenandoah Valley. Charlottesville: University Press of Virginia, 1977. 251 + xiv pp. Statistical studies of American urban history now appear to be at
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Quantification, smoothing, and confidence limits for single-units' histograms
Journal of Neuroscience Methods, 1982In this article the relationships among firing rate, probability of firing and counts per bin are examined. It is suggested that PSTHs, autocorrelations and crosscorrelations of neuronal activity should all be expressed in units of firing rates (spikes/s), since the values obtained by such scaling are independent of bin size and of total time of ...
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Lower limit of iron quantification using dual‐energy CT — a phantom study
Journal of Applied Clinical Medical Physics, 2021Xia Jiang, Richard D White
exaly
Shot noise sets the limit of quantification in electrochemical measurements
Current Opinion in Electrochemistry, 2020Rui Gao +2 more
exaly