Pamela Pollet

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Using an 11-item questionnaire and a double-blind experimental design, changes in mood, hunger and food preference after taking caffeine (100 mg), tryptophan (500 mg), tyrosine (500 mg) or placebo, were investigated in 60 volunteers. At the end of the study, volunteers also ranked the four treatments on a sedation/stimulation scale. Caffeine significantly(More)
The design, construction and performance of the H1 silicon vertex detector is described. It consists of two cylindrical layers of double sided, double metal silicon sensors read out by a custom designed analog pipeline chip. The analog signals are transmitted by optical fibers to a custom designed ADC board and are reduced on PowerPC processors. Details of(More)
This study was undertaken to test the effects of plausible meals containing slow release starches in the form of bean flakes on plasma glucose and hunger in man. In a first study, volunteers consumed a hachis paramentier (shepherd's pie) containing either bean purée or potato purée. After the meal containing potato, plasma glucose levels rose sharply,(More)
An abiotic formation of meso- and DL-tartrates in 80% yield via the cyanide-catalyzed dimerization of glyoxylate under alkaline conditions is demonstrated. A detailed mechanism for this conversion is proposed, supported by NMR evidence and (13)C-labeled reactions. Simple dehydration of tartrates to oxaloacetate and an ensuing decarboxylation to form(More)
An abiotic formation of meso-and DL-tartrates in 80% yield via the cyanide-catalyzed dimerization of glyoxylate under alkaline conditions is demonstrated. A detailed mechanism for this conversion is proposed, supported by NMR evidence and 13 C-labeled reactions. Simple dehydration of tartrates to oxaloacetate and an ensuing decarboxylation to form pyruvate(More)
The greatest advantage of heterogeneous catalysis is the ease of separation, while the disadvantages are often limited activity and selectivity. We report solvents that use tunable phase behavior to achieve homogeneous catalysis with ease of separation. Tunable solvents are homogeneous mixtures of water or polyethylene glycol with organics such as(More)
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