FOR the paper chromatography of steroids several colour reagents are used, such as 2,4-dinitrophenyl-hydrazine, Zimmermann's reagent, phosphomolybdic acid, antimony trichloride, etc. Their common ...

THE demonstration of phosphate esters on paper chromatograms has hitherto depended upon purely chemical methods for the liberation of the bound phosphate groups 1. The specificity of these techniques ...

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A paper chromatogram can also be used to identify substances by comparing them with known substances. Two substances are likely to be the same if: they produce the same number of spots, and these ...

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The top stories and transfer rumours from Monday's newspapers... Back Pages is a review of the sports headlines from the national newspapers, every Monday to Friday, live on Sky Sports News from ...

Before diving into trading options with real money, a good first step for both novice and experienced traders is to practice their strategies and familiarize themselves with the platform they choose ...

One of the oldest financial adages is that it "takes money to make money." Aside from selling your own labor, that's true, and the stock market is arguably the most lucrative and time-tested arena for ...

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Walt Disney Animation Studios’ Zootopia 2 has roared past the $1 billion threshold at the global box office, achieving the massive milestone in just 17 days. This phenomenal pace makes it the ...