Literature DB >> 6172589

Improvement in microscope photometry by voltage to frequency conversion: analogue measurement and digital processing.

M I Freitas, P A Giordano, G Bottiroli.   

Abstract

A system for digital measurement of microscope photometric signals, based on Voltage to Frequency Conversion (VFC) and suitable for automatic data processing, has been devised. Advantages and disadvantages are illustrated with special emphasis on the comparison between photocurrent measuring and photon counting techniques. A statistical analysis of the results allows the calibration of VFC net counts versus detected photons. A biological application is reported; this shows the suitability of the system even to low light levels.

Mesh:

Year:  1981        PMID: 6172589     DOI: 10.1111/j.1365-2818.1981.tb00315.x

Source DB:  PubMed          Journal:  J Microsc        ISSN: 0022-2720            Impact factor:   1.758


  5 in total

1.  Influence of cis-dichlorodiamineplatinum on glioma cell morphology and cell cycle kinetics in tissue culture.

Authors:  V Mares; P A Giordano; G Mazzini; V Lisá; C Pellicciari; E Scherini; G Bottiroli; J Drobnik
Journal:  Histochem J       Date:  1987-04

2.  In situ evaluation of the functional state of chromatin by means of Quinacrine Mustard staining and time-resolved fluorescence microscopy.

Authors:  G Bottiroli; P G Cionini; F Docchio; C A Sacchi
Journal:  Histochem J       Date:  1984-03

3.  Propidium iodide staining of cytoautoradiographic preparations for the simultaneous determination of DNA content and grain count.

Authors:  P A Giordano; G Mazzini; A Riccardi; C M Montecucco; G Ucci; M Danova
Journal:  Histochem J       Date:  1985-11

4.  A fast and reliable system for microcomputerized DNA cytofluorometry in tumour pathology.

Authors:  K Bjelkenkrantz; O Stål; O Gröntoft
Journal:  Histochemistry       Date:  1983

5.  Characterization of a doxorubicin-resistant murine melanoma line: studies on cross-resistance and its circumvention.

Authors:  R Supino; E Prosperi; F Formelli; M Mariani; G Parmiani
Journal:  Br J Cancer       Date:  1986-07       Impact factor: 7.640

  5 in total

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