منابع مشابه
Measurement of circular dichroism spectra of liquid/liquid interface by centrifugal liquid membrane method.
The direct measurement of the circular dichroism (CD) spectra of liquid/liquid interface has been achieved for the first time by the centrifugal liquid membrane (CLM) method combined with a conventional CD spectropolarimetry. In the sample chamber of the CD spectropolarimeter, a cylindrical glass cell containing small amounts of organic and aqueous phases was rotated at ca. 7000 rpm to generate...
متن کاملMeasurement of serum uric acid by liquid chromatography.
The biochemical and clinical importance of uric acid in gout, the Lesch-Nyhan syndrome, and several other disease states has recently been discussed (1). Serum uric acid is now commonly measured by spectrophotometry. The spectrophotometric methods, which account for more than 99% of the assays put to routine use, can be subdivided into two categories: redox colorimetric and enzymatic (uricase) ...
متن کاملTransmissive liquid crystal cell parameters measurement by spectroscopic ellipsometry
A powerful method for liquid crystal ~LC! cell twist angle and retardation measurement is presented. This method is based on the spectroscopic ellipsometry. By varying the polarizer and analyzer angles only, a transmission spectrum containing null transmission at some particular wavelengths can be obtained. Analytical equations derived bases on a polarization analysis of twisted birefringent la...
متن کاملRadon Determination by Activated Charcoal Adsorption and Liquid Scintillation Measurement
A passive diffusion method for the determination of radon concentration has been optimised and calibrated. The device consists of a scintillation vial containing activated charcoal, a diffusion barrier and a desiccant agent. The response to diverse atmospheric humidity and variable exposure intervals was studied. The result is a detector independent of atmospheric humidity till 7 days of exposu...
متن کاملA measurement of the absorption of liquid argon scintillation light by dissolved nitrogen at the part-per- million level
We report on a measurement of the absorption length of scintillation light in liquid argon due to dissolved nitrogen at the part-per-million (ppm) level. We inject controlled quantities of nitrogen into a high purity volume of liquid argon and monitor the light yield from an alpha source. The source is placed at different distances from a cryogenic photomultiplier tube assembly. By comparing th...
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ژورنال
عنوان ژورنال: Transactions of the Society of Instrument and Control Engineers
سال: 1965
ISSN: 0453-4654
DOI: 10.9746/sicetr1965.1.333