Charge Order-to-Superfluid Transition for 2D Hard-Core Bosons and Emergent Domain Structures

We made use of a special algorithm for Compute Unified Device Architecture (CUDA) for NVIDIA graphics cards, a nonlinear conjugate-gradient method to minimize energy functional, and a Monte-Carlo technique to directly observe the forming of the ground state configuration for the 2D hard-core bosons with lowering the temperature and its evolution with deviation away from half filling. The novel technique allowed us to examine earlier implications and uncover novel features of the charge order-to-superfluid phase transition, in particular, look upon the nucleation of the odd domain structure, emergence of filamentary superfluidity nucleated at the antiphase domain walls of the charge ordered phase, and nucleation and evolution of different topological structures.     

Experimental investigation of the radiant and conductive-convective components of external heat exchange in a high-temperature fluidized bed

The results of the experimental investigation of the components of complex external heat exchange in a high-temperature fluidized bed, by means of a radiometer and two calorimeters with a different degree of surface blackness, are given.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 36, No. 3, pp. 409–415, March, 1979.     

A Rotary Fine Filter for High-Efficient Dry Dust Collecting in the Production of Refractories

A fine filter for treatment of dust-laden gases in the production of refractories is developed. Its testing in a pilot filtering unit using a model quartz dust has shown a high-efficient on-line recovery of 75 – 85%. The aerodynamics of the filter equipped with rotary impellers is discussed. The engineering solution proposed expands the application of fine filters and allows the treatment of dust-laden gases to be carried out without preliminary separation of large-sized particles using other facilities.