Pretesting chemical additives

Pharmacological and chemical effects of cigarette additives.

We investigated tobacco industry documents and other sources for evidence of possible pharmacological and chemical effects of tobacco additives. Our findings indicated that more than 100 of 599 documented cigarette additives have pharmacological actions that camouflage the odor of environmental tobacco smoke emitted from cigarettes, enhance or maintain nicotine delivery, could increase the addi...

Protein refolding using chemical refolding additives.

In laboratories and manufacturing settings, a rapid and inexpensive method for the preparation of a target protein is crucial for promoting resesrach in protein science and engineering. Inclusion-body-based protein production is a promising method because high yields are achieved in the upstream process, although the refolding of solubilized, unfolded proteins in downstream processes often lead...

Consistent Pretesting for Jumps*

If the intensity parameter in a jump diffusion model is identically zero, then parameters characterizing the jump size density cannot be identified. In general, this lack of identification precludes consistent estimation of identified parameters. Hence, it should be standard practice to consistently pretest for jumps, prior to estimating jump diffusions. Many currently available tests have powe...

Crambe seed processing: decomposition of glucosinolates (thioglucosides) with chemical additives.

The Effect of Chemical Additives on Ice-Spike Formation

Solutions of sodium bicarbonate, calcium chloride, ethanol, acetic acid, and methanol, in concentrations ranging from 10−7 to 0.1 molar, were frozen under controlled conditions to measure the dependence of ice-spike formation on chemical impurities in water. The probability of ice-spike formation was plotted against molarity of solution to determine general trends for different solutes. The var...