423 research outputs found
Non-Boltzmann classical correction to the velocity auto-correlation function for isotropic scattering in two dimensions
The classical correction to the velocity auto-correlation function of
non-interacting particles due to memory effects, which are beyond the Boltzmann
equation, is calculated both analytically and numerically for the case of
isotropic scattering in two dimensions.Comment: 14 pages, 8 figure
Measurements of the Influence of Acceleration and Temperature of Bodies on their Weight
A brief review of experimental research of the influence of acceleration and
temperatures of test mass upon gravitation force, executed between the 1990s
and the beginning of 2000 is provided.Results of weighing a rotor of a
mechanical gyroscope with a horizontal axis, an anisotropic crystal with the
big difference of the speed of longitudinal acoustic waves, measurements of
temperature dependence of weight of metal bars of non-magnetic materials, and
also measurement of restitution coefficients at quasi-elastic impact of a steel
ball about a massive plate are given. A negative temperature dependence of the
weight of a brass core was measured. All observably experimental effects, have
probably a general physical reason connected with the weight change dependent
upon acceleration of a body or at thermal movement of its microparticles.Comment: 7 pages, 6 figures. Presented at the 5-th Symposium on New Frontiers
and Future Concepts (STAIF-2008
Hybrid Graphene Nanocomposites: Thermal Interface Materials and Functional Energy Materials
Most existing materials may not satisfy all the fundamental requirements of modern civilization. This chapter summarizes the latest advances in the study of hybrid graphene nanocomposites and their application as thermal interface materials and some functional energy materials, in particular, for thermal management of energy and electronic devices. The main properties of hybrid graphene nanocomposites are described. The main attention is paid to the thermal properties of such materials, in particular, thermal conductivity and the possibilities of its growth due to various changes in the morphology and other properties of nanocomposites. The technology of obtaining a new nanocomposite based on mesoscopic microspheres, polymers, and graphene flakes is considered
Two-dimensional manifold with point-like defects
We study a class of two-dimensional compact extra spaces isomorphic to the
sphere in the framework of multidimensional gravitation. We show that
there exists a family of stationary metrics that depend on the initial
(boundary) conditions. All these geometries have a singular point. We also
discuss the possibility for these deformed extra spaces to be considered as
dark matter candidates.Comment: 4 pages, 2 figures; Proceedings of the Conference of Fundamental
Research and Particle Physics, 18-20 February 2015, Moscow, Russian
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