Chiral effect caused by shock waves from the supernova explosion

The chiral effect of the switch-on shock wave from the supernova (SN) on interstellar cloud organics was estimated. It was found that this effect is weak and cannot violate the chiral universality of the influence caused by left-polarized electrons and neutrino from the SN.     

Relativistic neutron fireball from a supernova explosion as a possible source of chiral effect. The role of bremsstrahlung photons

We develop the idea, proposed earlier, of a possible role of neutrons, released in a supernova (SN) explosion, as a source of polarized electrons that cause chiral asymmetry of organic molecules in interstellar gas-dust clouds. The neutrons are carried away from the dense SN shell by a relativistic neutron fireball with Lorentz factor γ of order 100. At the early stage of this carrying away, the ejected polarized electrons generate circularly polarized photons as a result of bremsstrahlung in the fireball plasma. The photons of energy near 5 eV in the ultraviolet part of the spectrum show a high efficiency of the chiral effect. In the favorable case of low absorption in the interstellar medium this mechanism may appear to be more (by two orders of magnitude) efficient than the chiral effect of the polarized electrons from the same fireball.     

Effect of the granulometric properties of metallic scandium powder on its conductivity

The influence of the granulometric properties of powdered metal on the density dependence of its conductivity is studied by the example of metallic scandium. It is found that a decrease in the grain size leads to an increase in the compression force necessary to rupture oxide films at the sites of grain contact and thereby carry the powder to the conducting state. It is shown that this force correlates with the content of scandium oxide forming a film on the grain surface. When the grain size range expands, the conductivity critical index decreases substantially because of an increase in the density of a conducting percolation cluster formed by the contacting metallic bases of the grains.     

Search for neutrino oscillations vμ → vτ in CERN → Gran Sasso high-energy neutrino beam (the OPERA experiment)

The main purpose of the OPERA experiment is the direct observation of neutrino oscillations (v_μ → v_τ) in the v_μ beam from the CERN accelerator through the direct detection of τ leptons in nuclear emulsions at the Gran Sasso National Underground Laboratory. Some aspects of the use of the Russian PAVICOM facility for processing and analyzing the data obtained from the OPERA experiment are discussed.     

Chiral effect of electrons from supernova outbursts in the neutron fireball model

The previously proposed idea about the possible role of neutrons released during the supernova (SN) outburst as a source of polarized electrons causing chiral asymmetry of organic molecules in interstellar gas—dust clouds is developed. A specific physical mechanism of removal of a large number of free neutrons beyond the dense SN shell via the relativistic neutron fireball with a Lorentz factor on the order of 100 is considered. Estimations show high efficiency of the chiral effect of electrons from the SN in the mechanism under consideration.     

Laws of the lattices of partially composition formations

We prove that every law of the lattice of all formations of finite groups is fulfilled in the lattice of all n-multiply ω-composition formations of finite groups for every nonempty set of primes ω and every natural n.