Effective Color Charge at A0 Background

In SU(2) gluodynamics, in the background Feynman gauge the effective charge ğ2(A0) is calculated in the presence of the A0 condensate which is spontaneous generated at high temperature. It is determined from a two-loop effective potential W(A0). Temperature dependence in a wide interval is investigated.

Роль переходных металлов в кристаллизации аморфных сплавов Al-Ni-Co-Yb

Amorphous ribbons of Al86Ni4Co4Yb6 and Al86Ni6Co2Yb6 compositions were produced by a standard planar flow casting method. According to the X-ray analysis, the as-cast ribbons were amorphous. Kinetics of crystallization and electroresistivity were studied with different heating rates. Alloys have a wide interval of amorphous phase, and the different combination of transitions metals influence on process of their crystallization.

Discovery of the Odderon by TOTEM experiments and the FMO approach

This paper is an extended version of the talk by B. Nicolescu at the XLVIII International Symposium on Multiparticle Dynamics (ISMD2018) at Singapore, 3-7 September, 2018. Theoretical basis and history of the Froissaron and Maximal Odderon (FMO) approach for elastic pp and $ \bar {p} $ p scattering is presented. Precise formulation of the FMO model at any momentum transfer squared t is given. The model is applied to description and analysis of the experimental data in a wide interval of energy $ \sqrt s $ and t. The special attention is given for the latest TOTEM data at 13 TeV, both at t = 0 and at t ≠ 0 and to their interpretation in the FMO model. It is emphasized that the last TOTEM results can be considered as clear evidence for the first experimental observation of the Odderon, predicted theoretically about 50 years ago.

AVALIAÇÃO ESPECTROFOTOMÉTRICA DAS FORMAS CR+3, CRO4 -2 E CR2O7 -2

A spectrophometric study of the speciation of the chemical forms Cr+3, CrO4-2 and Cr2O7-2 was carried out on a wide interval of pH (from 2,0 to 12,0) in a Britton-Robinson buffer solution. The absorption spectra of the ultraviolet and visible regions are well defined and show bands in the two spectral regions. The relation between absorbance versus concentration for each chemical species allowed us to know the molar absorption coefficients of the chemicalentities.