Hydrometallurgical processing of gold-containing ore and its washed products

This article presents the results of hydrometallurgical studies of gold-bearing ore. The experiments were carried out on 2 parallel weighed portions with the analysis of products by assay (cake) and atomic absorption (solution) analyzes of gold. To determine the technological properties, tests were carried out on the direct and sorption cyanidation of ore samples using different material sizes, the concentration of the complexing agent in the solution and the preliminary treatment of the pulp with lime. The study of the sorption activity of the ore, as well as the dynamics of gold dissolution was carried out

Electroproduction of \u3ci\u3epπ\u3c/i\u3e+\u3ci\u3e​π\u3c/i\u3e- Off Protons at 0.2 \u3c \u3ci\u3eQ\u3c/i\u3e\u3csup\u3e2\u3c/sup\u3e \u3c 0.6 GeV\u3csup\u3e2\u3c/sup\u3e and 1.3 \u3c \u3ci\u3eW\u3c/i\u3e \u3c 1.57 GeV with the CLAS Detector

This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process ep → e\u27pπ+π −. The data were collected with the CLAS detector at Jefferson Laboratory. Measurements were carried out in the as yet unexplored kinematic region of photon virtuality 0.2 \u3c Q2 \u3c 0.6 GeV2 and invariant mass of the final hadron system W from 1.3 to 1.57 GeV. For the first time, nine independent one-fold differential cross sections were determined in each bin of W and Q2 covered by the measurements. A phenomenological analysis of the data allowed us to establish the most significant mechanisms contributing to the reaction. The nonresonant mechanisms account for a major part of cross sections. However, we find sensitivity to s-channel excitations of low-mass nucleon resonances, especially to the N(1440)P11 and N(1520)D13 states in kinematic dependencies of the one-fold differential cross sections

Numerical approach to the dynamical Casimir effect

The dynamical Casimir effect for a massless scalar field in 1+1-dimensions is studied numerically by solving a system of coupled first-order differential equations. The number of scalar particles created from vacuum is given by the solutions to this system which can be found by means of standard numerics. The formalism already used in a former work is derived in detail and is applied to resonant as well as off-resonant cavity oscillations.Comment: 15 pages, 4 figures, accepted for publication in J. Phys. A (special issue: Proceedings of QFEXT05, Barcelona, Sept. 5-9, 2005

Metamaterial with polarization and direction insensitive resonant transmission response mimicking electromagnetically induced transparency

We report on a planar metamaterial, the resonant transmission frequency of which does not depend on the polarization and angle of incidence of electromagnetic waves. The resonance results from the excitation of high-Q antisymmetric trapped current mode and shows sharp phase dispersion characteristic to Fano-type resonances of the electromagnetically induced transparency phenomenon

Affine algebraic groups with periodic components

A connected component of an affine algebraic group is called periodic if all its elements have finite order. We give a characterization of periodic components in terms of automorphisms with finite number of fixed points. It is also discussed which connected groups have finite extensions with periodic components. The results are applied to the study of the normalizer of a maximal torus in a simple algebraic group.Comment: 20 page

Use of the author’s technique for optimisation of orthopedic treatment of patients with complete mandibular adentia

New mandibular false teeth for complete adentia was offered. Comparative long-time result evaluation of orthopedic treatment of patients with complete mandibular adentia with the help of traditional and our method was done.Предложен новый зубной протез на нижнюю челюсть при полном отсутствии зубов. Проведен сравнительный анализ лечения больных с полным отсутствием зубов на нижней челюсти, традиционным способом и методом предложенным нами