Densitometric microanalysis of sugars on thinlayer chromatogram

Improved separation of sugars on the paper partition chromatogram.

450-5 m,u.)since it yielded a singleband on mixed chromatography with cryptoxanthin obtained from yellow maize (Sadana, 1946). Zone II. This was an orange-coloured band. The pigment was identified as neo-,-carotene U (maxima in light petroleum 480 and 450 mp.; Sadana, 1949). Zone III. This was reddish orange in colour. The pigment was extracted and identified as $-carotene by its absorption spe...

Chromaligner: a web server for chromatogram alignment

UNLABELLED Chromaligner is a tool for chromatogram alignment to align retention time for chromatographic methods coupled to spectrophotometers such as high performance liquid chromatography and capillary electrophoresis for metabolomics works. Chromaligner resolves peak shifts by a constrained chromatogram alignment. For a collection of chromatograms and a set of defined peaks, Chromaligner ali...

effect of oral presentation on development of l2 learners grammar

this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...

Correlated Microanalysis of Carbonaceous

Introduction: Recent work has shown that sub-micron car-bonaceous spheres (" nanoglobules ") constitute a microstructur-ally distinct, ubiquitous form of extraterrestrial organic carbon. Nanoglobules have been reported to occur in the insoluble organic matter (IOM) of carbonaceous chondrites, in the matrices of primitive chondrites, in interplanetary dust particles and in Wild-2 samples [1-4]. ...

I5i. a New Form of Chromatogram Employing Two Liquid Phases