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The intrinsic viscosity of protein solutions changes when denaturation occurs. Therefore, viscosity measurement using traditional glass capillary viscometers has been a key method to study the process of protein denaturation. Such measurements are laborious, time consuming and need at least 10 ml of sample. The Viscotek differential viscometer can be used(More)
The new technique of differential viscometry measures directly the specific viscosity of a solution by subtracting the contribution of solvent in a balanced capillary bridge. The present work adapts the differential viscometry principle to the design of a viscosity detector for use in size-exclusion chromatography. It is shown that the resulting viscosity(More)
The properties of polybenzyl glutamate, a well known polyamino acid vary considerably with molecular weight in both solid state and in solution. Therefore, accurate determinations of the molecular weights of these polyamino acids is essential. The dual viscometer/refractometer when used as detector system for size exclusion chromatography provides a way of(More)
A study has been made to demonstrate the capability of spark source mass spectrometry (SSMS) for differentiating bullets on the basis of elemental composition. Twenty-six elements are commonly found in bullet lead at the 0.1-ppm level and above. Only twelve of these prove to be generally useful for quantitative characterization. The precision of analysis(More)
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