Kom ons sit sommer by die tafel (André le Roux)

Gerald Sommer

Nonuniform and multidimensional Shinnar-Le Roux RF pulse design method.

The Shinnar-Le Roux (SLR) radiofrequency (RF) pulse design algorithm is widely used for designing slice-selective RF pulses due to its intuitiveness, optimality, and speed. SLR is limited, however, in that it is only capable of designing one-dimensional pulses played along constant gradients. We present a nonuniform SLR RF pulse design framework that extends most of the capabilities of classica...

Sommer-edition 2004

NON-ARISTOTELIAN LOGICS One of the deep-seated cravings of the human mind seems to be a desire for something permanent, for something eternally the same, changeless and absolute. Of such an object of reverence it can then be exclaimed, "Oh Thou Who Changest Not !" This worship of the changeless is by no means confined to religion, for, in the field of philosophy, as is known, no less a person t...

Two new neolignans from Syringa velutina Kom.

Two new neolignans, (7S,8R)-guaiacylglycerol-8-O-4'-sinapyl ether 9'-O-beta-D- glucopyranoside (1) and (7S,8R)-syringylglycerol-8-O-4'-sinapyl ether 9'-O-beta-D-gluco- pyranoside (2) were isolated from the leaves of Syringa velutina Kom.. Their structures were established by chemical properties and spectroscopic evidence.

Turn-ons for axons

In This Issue In This Issue Nuclear proteins get around rotein trafficking between the cytoplasm and the nucleus has been studied extensively; but how do proteins move from one site to another within the nu-cleus? On page 615, Leung and Lamond focus on the intranuclear trafficking of the RNA-binding protein NHPX, and describe an elegant series of experiments that demonstrates the existence of m...