of the sacrum, it met with a definite forward projection of bone towards the upper end. Indeed, one might describe it better by saying that the finger passed up into a rectangular hollow formed by the anterior surface of the sacrum and an overhanging bony prominence, which was not continuous laterally with the arcuate lines of the pelvic inlet. A provisional diagnosis of spondylolisthesis was m...

In this work, we report first-principles calculations of the electronic structure of silver infinite nanotubes, chains and nanowires. For the purpose of this study, the focus is on two specific types of silver nanostructures. We have calculated the electronic structures for the silver (2,3) and the silver (3,4) extended nanostructures. For the (2,3) structure, we modeled the single-wall tube, a...

Microtubules are hollow cylinders composed of tubulin heterodimers that stack into linear protofilaments that interact laterally to form the microtubule wall. Synchrotron x-ray diffraction of microtubules under increasing osmotic stress shows they transition to rectangular bundles with noncircular buckled cross sections, followed by hexagonally packed bundles. This new technique probes the stre...

*Correspondence: Vladimir S. Shiryaev , G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences, 49 Tropinin Street, Nizhny Novgorod 603950, Russia e-mail: [email protected] The recent developments on chalcogenide glass hollow-core microstructured optical fibers (HC-MOFs) are presented. The comparative analysis of simulated optical properties for c...