Archive for July 2011
Mechanism of Liquid Scintillation Counting
By eliminating the combustion steps needed for gas phase analysis, the introduction of liquid scintillation counting (LSC) reduced the time required to analyze radioactive samples from hours to minutes. For low energy (“soft”) β emitters, LSC offers unmatched convenience and sensitivity. LSC detects radioactivity via the same type of light emission events which are used…
Read MoreDenaturing Protein Electrophoresis: SDS-PAGE
In their native form, proteins fold into a variety of shapes, some compact, some elongated. The rate of migration of native proteins through a sieving medium is therefore more a reflection of their relative compactness, and less an accurate measure of molecular weight. Denaturing the proteins nullifies structural effects on mobility, allowing separation on a…
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