Methods A combination of euglobulin precipitation, ion-exchange chromatography,(NH4)2SO4 precipitation and affinity chromatography was used in the process of purification.
He used gas chromatography, coupled with human sniffing, to identify about three dozen aromatic compounds contributing to the whiskey's flavor profile.
Improved laboratory techniques such as chromatography and electrophoresis led to rapid advances in physiological chemistry, which—as biochemistry—began to achieve independence from its medical origins.
And that detector puts out a chromatogram with these spikes representing the concentrations of each capsaicinoid, which they can then convert to Scoville heat units.
And as we fine-tune current and future experiments, we're interested in seeing if specific wavelengths, or color, color spectrums of light, have the same effect or less effect.
科学快报-科学美国2023Science Quickly, from SCIENTIFIC AMERICAN 2023
Newton's discovery of the color spectrum is good here, because what we discovered is that they aren't a fixed number of colors, but there's an infinite gradient.
Intrigued by that discovery, the team put the crude sample they were working on through two rounds of chromatography, to split it into its constituents, and repeated the tests on these.
Just below the chromatophores is a layer of cells that reflect light from the environment, and these cells help the octopus create a precise match with the colors that surround them.