22 research outputs found
Complex research of acoustic impact on gas-dust flow in vortex-acoustic dispenser
Introduction The processing of wastes from mining operations is usually related to the needs of related industries in raw materials. The results of numerous studies on the complex processing of various man-made materials have confirmed the feasibility of their use to ensure resource-saving and obtain new types of products [1-3]. One of the most promising areas of industrial waste utilization is their integrated use in the production of building materials, which allows to meet the demand for raw materials up to 40% for this most important industry. The use of industrial waste allows to reduce costs for the manufacture of building materials 10-30% in comparison with their production from natural raw materials. The saving of capital investments makes 35-50% in this case [4-5]. In modern technology of building materials production, fine powders are one of the fundamental components that significantly affect the quality of finished products [6]. The fineness of material grinding is important for the intensification of various technological processes. However, the obtaining of a highly dispersed product is difficult due to increased energy consumption for material grinding, as well as their abrasiveness at an intensive abrasion, which causes a high wear of grinding bodies and other parts of a grinding unit. This leads to the increase of the grinding process cost, as well as to the obtaining of a poor-quality, contaminated product [7,8]. According to the data [9-10], the energy costs for the grinding of various materials reach 20% of the total energy consumption for production. The most promising method for fine and ultrafine grinding of various materials used in lowtonnage and innovative technologies is the jet method of grinding [11-12]
Features of neurologic semiology in patients with Chiari malformation I type
The article is devoted to the analysis ot neurologic semiology of 54 patients with malformation Chiari I type at its association with syringomyelia and without. At similar anatomic changes at craniovertebral junction the symptomatology in two subgroups was various. In particular, at associated form there were noted prevalence of the latent disease course, a triad of complaints of patients on a headache, dizziness, vertebral pains; the objective semiology presented by coordination, cerebellar and bulbar disorders, and also oculomotorius; the increase of specific density of motor pyramidal disorders and of sensitivity, including unilateral, and hypesthesia; and also part of patients with cerebellar tonsils dystopia on 6-15 mm below foramen magnum.Π‘ΡΠ°ΡΡΡ ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° Π°Π½Π°Π»ΠΈΠ·Ρ Π½Π΅Π²ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΠΌΠΏΡΠΎΠΌΠ°ΡΠΈΠΊΠΈ 54 Π±ΠΎΠ»ΡΠ½ΡΡ
Ρ ΠΌΠ°Π»ΡΡΠΎΡΠΌΠ°ΡΠΈΠ΅ΠΉ ΠΠΈΠ°ΡΠΈ 1 -Π³ΠΎ ΡΠΈΠΏΠ° ΠΏΡΠΈ Π΅Ρ ΡΠΎΡΠ΅ΡΠ°Π½ΠΈΠΈ Ρ ΡΠΈΡΠΈΠ½Π³ΠΎΠΌΠΈΠ΅Π»ΠΈΠ΅ΠΉ ΠΈ Π±Π΅Π· ΡΠ°ΠΊΠΎΠ²ΠΎΠΉ. ΠΡΠΈ ΡΡ
ΠΎΠΆΠΈΡ
Π°Π½Π°ΡΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡΡ
Π½Π° ΡΡΠΎΠ²Π½Π΅ ΠΊΡΠ°Π½ΠΈΠΎΠ²Π΅ΡΡΠ΅Π±ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠ΅ΡΠ΅Ρ
ΠΎΠ΄Π° ΡΠΈΠΌΠΏΡΠΎΠΌΠ°ΡΠΈΠΊΠ° Π² Π΄Π²ΡΡ
ΠΏΠΎΠ΄Π³ΡΡΠΏΠΏΠ°Ρ
Π±ΡΠ»Π° ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ. ΠΡΠΈ ΡΠΎΡΠ΅ΡΠ°Π½Π½ΠΎΠΉ ΡΠΎΡΠΌΠ΅ ΠΎΡΠΌΠ΅ΡΠ΅Π½ΠΎ ΠΏΡΠ΅ΠΎΠ±Π»Π°Π΄Π°Π½ΠΈΠ΅ Π»Π°ΡΠ΅Π½ΡΠ½ΠΎΠΉ ΡΠΎΡΠΌΡ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ, ΡΡΠΈΠ°Π΄Ρ ΠΆΠ°Π»ΠΎΠ± Π±ΠΎΠ»ΡΠ½ΡΡ
Π½Π° Π³ΠΎΠ»ΠΎΠ²Π½ΡΡ Π±ΠΎΠ»Ρ, Π³ΠΎΠ»ΠΎΠ²ΠΎΠΊΡΡΠΆΠ΅Π½ΠΈΠ΅, Π±ΠΎΠ»ΠΈ ΠΏΠΎ Ρ
ΠΎΠ΄Ρ ΠΏΠΎΠ·Π²ΠΎΠ½ΠΎΡΠ½ΠΈΠΊΠ°; ΠΎΠ±ΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠΉ ΡΠΈΠΌΠΏΡΠΎΠΌΠ°ΡΠΈΠΊΠΈ, ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π½ΠΎΠΉ ΠΊΠΎΠΎΡΠ΄ΠΈΠ½Π°ΡΠΎΡΠ½ΠΎ-ΠΌΠΎΠ·ΠΆΠ΅ΡΠΊΠΎΠ²ΡΠΌΠΈ ΠΈ Π±ΡΠ»ΡΠ±Π°ΡΠ½ΡΠΌΠΈ ΡΠ°ΡΡΡΡΠΎΠΉΡΡΠ²Π°ΠΌΠΈ, Π³Π»Π°Π·ΠΎΠ΄Π²ΠΈΠ³Π°ΡΠ΅Π»ΡΠ½ΡΠΌΠΈ Π½Π°ΡΡΡΠ΅Π½ΠΈΡΠΌΠΈ, ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ΠΌ ΡΠ΄Π΅Π»ΡΠ½ΠΎΠ³ΠΎ Π²Π΅ΡΠ° Π΄Π²ΠΈΠ³Π°ΡΠ΅Π»ΡΠ½ΡΡ
ΠΏΠΈΡΠ°ΠΌΠΈΠ΄Π½ΡΡ
ΡΠ°ΡΡΡΡΠΎΠΉΡΡΠ² ΠΈ ΡΠ°ΡΡΡΡΠΎΠΉΡΡΠ² ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ, Π² ΡΠΎΠΌ ΡΠΈΡΠ»Π΅ ΠΎΠ΄Π½ΠΎΡΡΠΎΡΠΎΠ½Π½ΠΈΡ
, ΠΈ Π³ΠΈΠΏΠ΅ΡΡΠ΅Π·ΠΈΠΈ; Π° ΡΠ°ΠΊΠΆΠ΅ Π΄ΠΎΠ»ΠΈ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Ρ ΡΠΊΡΠΎΠΏΠΈΠ΅ΠΉ ΠΌΠΈΠ½Π΄Π°Π»ΠΈΠ½ ΠΌΠΎΠ·ΠΆΠ΅ΡΠΊΠ° Π½Π° Π²Π΅Π»ΠΈΡΠΈΠ½Ρ 6-15 ΠΌΠΌ Π½ΠΈΠΆΠ΅ ΡΡΠΎΠ²Π½Ρ Π±ΠΎΠ»ΡΡΠΎΠ³ΠΎ Π·Π°ΡΡΠ»ΠΎΡΠ½ΠΎΠ³ΠΎ ΠΎΡΠ²Π΅ΡΡΡΠΈΡ
Investigation of the properties of quantum-dimensional semiconductor particles A3B5 by scanning probe microscopy, obtained by liquid chemical etching
The study was carried out with the financial support of the Russian Foundation for Basic Research in the framework of scientific projects 17-07-00407-Π° and 17-07-00139
Multiplicative slices, relativistic Toda and shifted quantum affine algebras
We introduce the shifted quantum affine algebras. They map homomorphically
into the quantized -theoretic Coulomb branches of SUSY
quiver gauge theories. In type , they are endowed with a coproduct, and they
act on the equivariant -theory of parabolic Laumon spaces. In type ,
they are closely related to the open relativistic quantum Toda lattice of type
.Comment: 125 pages. v2: references updated; in section 11 the third local Lax
matrix is introduced. v3: references updated. v4=v5: 131 pages, minor
corrections, table of contents added, Conjecture 10.25 is now replaced by
Theorem 10.25 (whose proof is based on the shuffle approach and is presented
in a new Appendix). v6: Final version as published, references updated,
footnote 4 adde
Subsurface disorder and electro-optical properties of proton-exchanged LiNbO3 waveguides produced by different techniques
It has been established, that proton-exchanged LiNbO3 waveguides have a marked subsurface layer with structural disorder inducing degradation of electro-optical properties of these waveguides. At the same time, such a subsurface disorder is found to be less pronounced in soft proton-exchanged (SPE) waveguides in comparison with annealed proton-exchanged (APE) ones. The experimental samples of phase modulators fabricated by SPE technique exhibit a better electro-optical efficiency compared to the LiNbO3 modulators produced by the standard and improved APE techniques
Fermionic formulas for eigenfunctions of the difference Toda Hamiltonian
We use the Whittaker vectors and the Drinfeld Casimir element to show that
eigenfunctions of the difference Toda Hamiltonian can be expressed via
fermionic formulas. Motivated by the combinatorics of the fermionic formulas we
use the representation theory of the quantum groups to prove a number of
identities for the coefficients of the eigenfunctions.Comment: 33 pages, Late
Alleviating the non-ultralocality of coset sigma models through a generalized Faddeev-Reshetikhin procedure
The Faddeev-Reshetikhin procedure corresponds to a removal of the
non-ultralocality of the classical SU(2) principal chiral model. It is realized
by defining another field theory, which has the same Lax pair and equations of
motion but a different Poisson structure and Hamiltonian. Following earlier
work of M. Semenov-Tian-Shansky and A. Sevostyanov, we show how it is possible
to alleviate in a similar way the non-ultralocality of symmetric space sigma
models. The equivalence of the equations of motion holds only at the level of
the Pohlmeyer reduction of these models, which corresponds to symmetric space
sine-Gordon models. This work therefore shows indirectly that symmetric space
sine-Gordon models, defined by a gauged Wess-Zumino-Witten action with an
integrable potential, have a mild non-ultralocality. The first step needed to
construct an integrable discretization of these models is performed by
determining the discrete analogue of the Poisson algebra of their Lax matrices.Comment: 31 pages; v2: minor change
Special features of the compensation effect in non-isothermal kinetics of solid-phase reactions
The use of transcranial doppler and CT-angiography for the substantion of the chiari malformation i type surgical technique
The clinical and instrumental examinations and surgical treatment of 54 patients with Chiari malformation I type were performed. Reduction of frequency of the arterial blood flow from 2 up to 4 times comparison with normal feature, prevalence of pathological types of posterior cerebral, basilar and vertebral arteries Doppler imaging were detected. Inferior posterior cerebellar artery dystopia corresponding with tonsilar cerebellar prolapse according to CT-angiographic imaging was registered. We recommend to use transcranial Doppler and cerebral CT-angiography for a choice of a technique of surgical treatment.ΠΡΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΎΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ 54 Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΌΠ°Π»ΡΡΠΎΡΠΌΠ°ΡΠΈΠ΅ΠΉ ΠΠΈΠ°ΡΠΈ 1 -Π³ΠΎ ΡΠΈΠΏΠ°. ΠΡΡΠ²Π»Π΅Π½ΠΎ ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΠ΅ ΡΠ°ΡΡΠΎΡΡ ΠΌΠ°Π³ΠΈΡΡΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠΏΠ° ΠΊΡΠΎΠ²ΠΎΡΠΎΠΊΠ°, ΠΏΡΠ΅ΠΎΠ±Π»Π°Π΄Π°Π½ΠΈΠ΅ Π΄ΠΎΠΏΠΏΠ»Π΅ΡΠΎΠ³ΡΠ°ΠΌΠΌ, ΡΠΊΠ°Π·ΡΠ²Π°ΡΡΠΈΡ
Π½Π° Π½Π°ΡΡΡΠ΅Π½ΠΈΠ΅ Π³Π΅ΠΌΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ Π² ΠΏΡΠ°Π²ΠΎΠΉ Π·Π°Π΄Π½Π΅ΠΉ ΠΌΠΎΠ·Π³ΠΎΠ²ΠΎΠΉ ΠΈ ΠΎΡΠ½ΠΎΠ²Π½ΠΎΠΉ Π°ΡΡΠ΅ΡΠΈΡΡ
. ΠΠΎ Π΄Π°Π½Π½ΡΠΌ ΠΠ’-Π°Π½Π³ΠΈΠΎΠ³ΡΠ°ΡΠΈΠΈ Π·Π°ΡΠ΅Π³ΠΈΡΡΡΠΈΡΠΎΠ²Π°Π½Π° Π΄ΠΈΡΡΠΎΠΏΠΈΡ Π½ΠΈΠΆΠ½Π΅ΠΉ ΠΌΠΎΠ·ΠΆΠ΅ΡΠΊΠΎΠ²ΠΎΠΉ Π°ΡΡΠ΅ΡΠΈΠΈ, ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΡΡΠ°Ρ ΠΏΡΠΎΠ»Π°ΠΏΡΡ ΠΌΠΈΠ½Π΄Π°Π»ΠΈΠ½ ΠΌΠΎΠ·ΠΆΠ΅ΡΠΊΠ°. Π‘Π΄Π΅Π»Π°Π½ Π²ΡΠ²ΠΎΠ΄ ΠΎ ΡΠ΅Π»Π΅ΡΠΎΠΎΠ±ΡΠ°Π·Π½ΠΎΡΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΡΡΠ°Π½ΡΠΊΡΠ°Π½ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π΄ΠΎΠΏΠΏΠ»Π΅ΡΠΎΠ³ΡΠ°ΡΠΈΠΈ ΠΈ ΠΠ’-Π°Π½Π³ΠΈΠΎΠ³ΡΠ°ΡΠΈΠΈ ΡΠΎΡΡΠ΄ΠΎΠ² Π³ΠΎΠ»ΠΎΠ²Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ·Π³Π° Π΄Π»Ρ ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ Ρ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ