The title compound, C(21)H(21)N(3)O(2), was obtained following a five-step synthetic procedure yielding weakly diffracting rod and needle-shaped crystals which crystallized concomitantly. Structural analysis of a rod-shaped crystal showed that the central seven-membered heterocyclic ring adopts a conformation that is perhaps best described as a distorted boat, with the H-bearing (CH(2) and NH) ...

Granular gases are interesting multiparticle systems which, irrespective of the apparent simplicity particle interactions, exhibit a rich scenario so far only little understood features. We have numerically investigated dense granular gas composed frictional spherocylinders which excited mechanically by lateral vibrating container walls. This study was stimulated experiments in microgravity on ...

Static horizonless solutions to the Einstein–Maxwell field equations, with only a circular cosmic string singularity, are extended to exact rotating asymptotically flat solutions. The possible interpretation of these field configurations as spinning elementary particles or as macroscopic rotating cosmic rings is discussed. Talk presented at the 4 Alexander Friedmann International Seminar on Gra...

The development of model materials and image processing methods to directly visualize and quantify colloidal rod assembly by means of confocal laser scanning microscopy (CLSM) is reported. Monodisperse fluorescent colloidal rods are prepared by the uniaxial extensional deformation of sterically stabilized microspheres at elevated temperatures. The particles are stably dispersed in refractive in...

Until now, identification of components of the flagellar protein export apparatus has been indirect. We have now identified these components directly by establishing whether mutants defective in putative export components could translocate export substrates across the cytoplasmic membrane into the periplasmic space. Hook-type proteins could be exported to the periplasm of rod mutants, indicatin...