Unified description for the temperature dependence of mobility in liquids.

The physical mechanisms governing molecular mobility in liquids remain unresolved. Whether distinct mechanisms govern mobility in the Arrhenian and super-cooled regions, and whether the mobility in these regions can be unified remain open questions. Here, molecular dynamics simulations were used to search for a structural property with a temperature dependence related by a simple functional form to the temperature dependent translational diffusion coefficient, Dtrans. The logarithm of Dtrans was found to be a two-parameter function of F2, where F2 is the mean squared-force per molecule. The relationship is demonstrated for all systems investigated: a three-bead model of ortho-terphenyl, an 80:20 binary mixture of Lennard-Jones spheres, and a system of Lennard-Jones dumbbells. For each system, the relationship holds for the entire range of temperatures under both constant pressure and constant density conditions. The same F2-based expression describes the translational diffusion coefficient in the Arrhenian, crossover, and super-Arrhenian regions.

[Moscow Semenov cemetery--a monument of military glory of Russia].

Until recently, beyond the attention of the public and the scientific community remains the question of memorializatsii once existed in Moscow, a large-scale military burial--Semenov military cemetery. This cemetery was not associated with any one war, and actually covered several periods of military history of Russia. Today, this place can be perceived as a symbol of Russia's military prowess, as a unique fraternal burial of soldiers of different generations. Today, thanks to the initiative of the public, the Chief Military Clinical Hospital. N.N. Burdenko Institute of History and Archives State Humanitarian University, the Union of Russian ethnographers, with the support of the Prefecture of HLW in Moscow and the district council "Falcon Hill" is working on giving the territory of the park, located in the cemeteries of Semenov, the status of places of interest here in order to create a military memorial. August 25, 2011 there was established the foundation stone of the future memorial. Continued hard work to gather and organize archival materials on the history of the necropolis Semenov, developed the scientific and artistic vision for the future memorial site. Memorial, designed by leading Russian experts--historians, sculptors, architects, artists who will be able to enrich the historical and cultural heritage of the city, will preserve the historical continuity of the traditions of the military glory of Russia, to perpetuate the memory of generations of defenders of the Fatherland.