23 pagesInternational audienceWe identify two seemingly disparate structures: supercharacters, a useful way of doing Fourier analysis on the group of unipotent uppertriangular matrices with coefficients in a finite field, and the ring of symmetric functions in noncommuting variables. Each is a Hopf algebra and the two are isomorphic as such. This allows developments in each to be transferred. The identification suggests a rich class of examples for the emerging field of combinatorial Hopf algebras

Soymilk was produced by (A) heating of intact soybeans after soaking but before disruption, (B) heating of soaked soybeans to 80°C during disruption, and (C) disruption of soaked soybeans with no prior heating. The results show that process A has low yields of solids and low recoveries of protein in comparison with processes B and C. Heating of soybeans preceding disruption seems to keep protein bodies intact when soybean cells are disrupted. Homogenization will redisperse protein bodies that have been fixed by heat, and homogenization at high pressure (8,000 psi) and high temperature (75°C) is more effective than lower pressures and temperatures. Data are presented on rates of water or buffer uptake by steeping soybeans, on times and temperatures needed to eliminate the green-beany flavor and on the solids analysis by spectrophotometry.

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Volatile anesthetics depress neurotransmitter release in a brain region-and neurotransmitter-selective manner by unclear mechanisms. Voltage-gated sodium channels (Na v s), which are coupled to synaptic vesicle exocytosis, are inhibited by volatile anesthetics through reduction of peak current and modulation of gating. Subtype-selective effects of anesthetics on Na v might contribute to observed neurotransmitter-selective anesthetic effects on release. We analyzed anesthetic effects on Na 1 currents mediated by the principal neuronal Na v subtypes Na v 1.

The far infrared and Raman spectra of polyethylene oxide (PEO) between 5 and 150 cm-1 has been measured for three crystalline samples with different degrees of polymerization. Lines are observed at 37, 52, 81, and 107 cm-1 in the infrared and at 37, 56, and 78 cm-1 in the Raman spectrum. Theoretical calculations show that the 81 and 107 cm -1 lines are assignable to the torsional motion of the PEO helical chain about the C-O bond. The absorptions at 37 and 52 cm -1 have not been previously reported or predicted by any normal mode calculations of the isolated 712 helix although they seem to arise from intramolecular rather than lattice vibrations. FIG. 1. Infrared spectra of PEO 1500 (sample thickness =0.1 mm).