A motor-driven syringe-type gradient maker for forming immobilized pH gradient gels

A motor driven gradient maker based on the commercial model (Jule Inc., Trumbull, CT) was designed for immobilized pH gradient gels to provide small volumes, rapid stirring and delivery, strict volume and temperature control and air exclusion. The device was constructed and by a convenient procedure yields highly reproducible gradients either in solution or on polyacrylamide gels.     

Simulation of critical fluid Rayleigh linewidth behavior by a normal fluid system

The dynamic droplet model of a critical fluid provides a simple physical model of a critical fluid. We use this to model an emulsion which mimics the Rayleigh linewidth behavior of a critical fluid in the nonhydrodynamic regime.     

Diamond a sorting method for vector machines

A method for parallel sorting in vector machines is described. It is shown that it has complexityO(N(logN)²).     

The effect of double scattering on critical fluid Rayleigh linewidth measurements

We apply recent work on the intensity correlation function of light double scattered from a system of brownian diffusing balls to the case of a fluid near the critical point. We evaluate the relative intensities and intensity correlation times of the polarized and depolarized components of the double scattered light as a function of k₀ξ. We compare these correlation times to those found for single scattering and find that the more intense polarized component of the double scattered light has a correlation time nearly equal to the singly scattered light in the critical region where $\text{k}{}_0\text{ξ ? 8}$.     

The configuration of aurones

The configurations of 6-methoxyaurone prepared by the condensation of 6-methoxy- coumaran-3-one and benzaldehyde and of its photoisomer are assigned on the basis of chemical and NMR evidence.