90 research outputs found
Theoretical prerequisites for the bionic substantiation of spring soil leveler working bodies parameters
In the system of measures for pre-sowing tillage, special attention should be given to leveling the soil, ensuring an increase in the uniformity of seeding in depth, which has a significant impact on increasing yields. The main solution to this problem is to improve the design of aligners using a mechanical-bionic approach for the analytical description of the optimal forms and parameters of their working bodies. The design of the working body of the spring soil leveler is proposed, the cutting edges of the undercutting wings of which have ridges and hollows in the form of a logarithmic curve with a positive convexity of curvature inside the depressions, developed by the bionic prototype of the mole cricket (Gryllotalpa). Using the methods of agricultural mechanics, the theoretical dependence of the rational depth of the working bodies and the value of the tractive resistance of spring soil leveler on the travel speed, design parameters and physical-mechanical soil properties, which are proved by the results of experimental research on the south carbonated middle loamy black earth have been established. The experimental spring soil leveler provided the reduction of traction resistance by 7...8% (40...49 N) and had the best stability of motion in depth by an average of 1.5 times (Β± 0.5 cm) in comparison with the serial model of the working bodies of the leveler VPN-5.6 A
Theoretical background for the bionic substantiation of parameters of the stubble cultivator working bodies
In the southern regions of Russia, the technology of cultivation of grain crops in the variant of partial sowing has been widely used. In this regard, it became necessary to create effective working bodies of a stubble cultivator that would have fundamentally new resource-saving ways of influencing the area under cultivating and meet the requirements of modern advanced technologies. The shapes of the working bodies surfaces of the cultivators were improved taking into account the mechanic-bionic approach. The main parameters of the toothed cutting surface were determined by the method of bionic comparisons, with a scarab beetle as a bionic prototype. Use of the serrated shape of the cutting edge is consistent with the bionic principle of multi-contact exposure and leads to the fact that the tops of the teeth become stress concentrators and, with a significantly smaller indentation force, cause soil destruction processes, which reduces the energy costs of cutting the soil layer. The optimal curvilinear shape of the working surface made in the form of a logarithmic spiral, is characterized by a constant value of the angle between the normal and the radius vector, and the value of this angle, equal to the angle of internal friction of the soil Ο2, will ensure the sliding of the soil and plant residues with minimal energy consumption. The number (n = 4), height (h = 5...7 mm) and tooth placement step (S = 10...12 mm) of the bit tip of the stubble cultivator are analytically justified. The shape of the profile of the working surface of the stubble cultivator bit in the form of a logarithmic spiral with a variable angle of crumbling is proposed. The studies were conducted in the period from September to October 2018 in the soil channel of the research Laboratory of Bionic Agroengineering of the Department of Mechanization and Technical Service in Agro-Industrial Complex. They have shown the decrease in the traction resistance of the proposed working body of the stubble cultivator by 16.5% in comparison with the traction resistance of the serial sample
Cosmogenic activation of Germanium and its reduction for low background experiments
Production of Co and Ge from stable isotopes of Germanium by
nuclear active component of cosmic rays is a principal background source for a
new generation of Ge double beta decay experiments like GERDA and
Majorana. The biggest amount of cosmogenic activity is expected to be produced
during transportation of either enriched material or already grown crystal.
In this letter properties and feasibility of a movable iron shield are
discussed. Activation reduction factor of about 10 is predicted by simulations
with SHIELD code for a simple cylindrical configuration. It is sufficient for
GERDA Phase II background requirements. Possibility of further increase of
reduction factor and physical limitations are considered. Importance of
activation reduction during Germanium purification and detector manufacturing
is emphasized.Comment: 10 pages, 3 tables, 6 figure
ΠΠΠ ΠΠΠΠ’Π ΠΠΠΠΠΠΠΠ«Π Π’ΠΠΠΠΠΠ: ΠΠΠ ΠΠΠΠΠΠΠΠ ΠΠ ΠΠΠΠ¦ ΠΠΠΠΠΠ¬ΠΠ«Π₯ Π¦ΠΠΠΠΠ Π ΠΠΠΠΠΠΠ«Π₯ Π’ΠΠΠΠΠ₯
The aspects of parameterized tiling in application to algorithms with index domain represented by a convex polyhedron are investigated. The structure of the set of partial tiles is proposed and the formulas to determine this set are constructed. The formula to define the boundaries of local loops in partial tiles is obtained as well. These formulas enable one to minimize the calculation time of local loop boundaries in the implementation of the tiling in sequential and parallel programs.Β ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ Π°ΡΠΏΠ΅ΠΊΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π° ΠΊ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ°ΠΌ, ΠΎΠ±Π»Π°ΡΡΡ Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΡ ΠΊΠΎΡΠΎΡΡΡ
ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΠΈΠΌΠ° Π²ΡΠΏΡΠΊΠ»ΡΠΌ ΠΌΠ½ΠΎΠ³ΠΎΠ³ΡΠ°Π½Π½ΠΈΠΊΠΎΠΌ. ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π° ΡΡΡΡΠΊΡΡΡΠ° ΠΌΠ½ΠΎΠΆΠ΅ΡΡΠ²Π° Π½Π΅ΠΏΠΎΠ»Π½ΡΡ
ΡΠ°ΠΉΠ»ΠΎΠ², ΠΏΠΎΡΡΡΠΎΠ΅Π½Ρ ΡΠΎΡΠΌΡΠ»Ρ Π΄Π»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΡΠΎΠ³ΠΎ ΠΌΠ½ΠΎΠΆΠ΅ΡΡΠ²Π°. Π’Π°ΠΊΠΆΠ΅ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ ΡΠΎΡΠΌΡΠ»Ρ, ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΡΡΠΈΠ΅ Π³ΡΠ°Π½ΠΈΡΡ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ Π»ΠΎΠΊΠ°Π»ΡΠ½ΡΡ
ΡΠΈΠΊΠ»ΠΎΠ² Π² Π½Π΅ΠΏΠΎΠ»Π½ΡΡ
ΡΠ°ΠΉΠ»Π°Ρ
. ΠΡΠΈ ΡΠΎΡΠΌΡΠ»Ρ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡ ΠΌΠΈΠ½ΠΈΠΌΠΈΠ·ΠΈΡΠΎΠ²Π°ΡΡ Π²ΡΠ΅ΠΌΡ ΡΠ°ΡΡΠ΅ΡΠ° Π³ΡΠ°Π½ΠΈΡ Π»ΠΎΠΊΠ°Π»ΡΠ½ΡΡ
ΡΠΈΠΊΠ»ΠΎΠ² ΠΏΡΠΈ ΡΠ΅Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π° Π² ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΠ½ΡΡ
ΠΈ ΠΏΠ°ΡΠ°Π»Π»Π΅Π»ΡΠ½ΡΡ
ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ°Ρ
.
ΠΠΠ£Π₯Π£Π ΠΠΠΠΠΠ«Π Π’ΠΠΠΠΠΠ Π ΠΠΠ ΠΠ ΠΠΠΠΠΠΠΠ ΠΠ Π ΠΠ ΠΠ‘Π’Π ΠΠΠ‘Π’ΠΠΠΠΠ-ΠΠ ΠΠΠΠΠΠΠ ΠΠ’ΠΠΠ ΠΠΠΠΠΠ ΠΠΠΠΠ ΠΠ’ΠΠΠ ΠΠ ΠΠΠ ΠΠΠΠΠΠ¬ΠΠ«Π ΠΠ Π₯ΠΠ’ΠΠΠ’Π£Π Π«
The idea of application of two-level tiling at space-time mapping of algorithms onto parallel computing systems is proposed. A formalized method of parameterized two-level tiling is developed. The formulas for determination of global dependences between different-level tiles are constructed. The formal representation of sets of iterations generating these dependences is obtained. The representation is given in the form of polyhedra with an explicit expression of their boundaries. A formalized method of space-time mapping onto supercomputers is developed. The method is based on the locally parallel globally sequential mapping strategy and the designed method of two-level tiling. The method realizes the proposed idea of space-time mapping in integration with tiling.Β ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π° ΠΈΠ΄Π΅Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π΄Π²ΡΡ
ΡΡΠΎΠ²Π½Π΅Π²ΠΎΠ³ΠΎ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π° Π΄Π»Ρ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π·Π°Π΄Π°ΡΠΈ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΠΎ-Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΎΡΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΡ Π°Π»Π³ΠΎΡΠΈΡΠΌΠΎΠ² Π½Π° ΠΏΠ°ΡΠ°Π»Π»Π΅Π»ΡΠ½ΡΠ΅ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ ΡΠΈΡΡΠ΅ΠΌΡ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ ΡΠ°Π·ΠΌΠ΅ΡΠ½ΠΎΡΡΠΈ ΠΈ ΡΠ°Π·ΠΌΠ΅ΡΠ°. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΡΠΎΡΠΌΠ°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π΄Π²ΡΡ
ΡΡΠΎΠ²Π½Π΅Π²ΠΎΠ³ΠΎ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π°. ΠΠΎΠ»ΡΡΠ΅Π½Ρ ΡΠΎΡΠΌΡΠ»Ρ Π΄Π»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ Π²Π΅ΠΊΡΠΎΡΠΎΠ² Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΡΡ
Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠ΅ΠΉ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠ°ΠΉΠ»Π°ΠΌΠΈ ΠΏΠ΅ΡΠ²ΠΎΠ³ΠΎ ΠΈ Π²ΡΠΎΡΠΎΠ³ΠΎ ΡΡΠΎΠ²Π½Π΅ΠΉ, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΈΠ΅ ΠΌΠ½ΠΎΠΆΠ΅ΡΡΠ² ΠΈΡΠ΅ΡΠ°ΡΠΈΠΉ, ΠΏΠΎΡΠΎΠΆΠ΄Π°ΡΡΠΈΡ
ΡΡΠΈ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ, Π² Π²ΠΈΠ΄Π΅ ΠΌΠ½ΠΎΠ³ΠΎΠ³ΡΠ°Π½Π½ΠΈΠΊΠΎΠ² Ρ ΡΠ²Π½ΡΠΌ Π²ΡΡΠ°ΠΆΠ΅Π½ΠΈΠ΅ΠΌ ΠΈΡ
Π³ΡΠ°Π½ΠΈΡ. ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠ³ΠΎ ΠΌΠ΅ΡΠΎΠ΄Π° Π΄Π²ΡΡ
ΡΡΠΎΠ²Π½Π΅Π²ΠΎΠ³ΠΎ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π° ΠΈ Π»ΠΎΠΊΠ°Π»ΡΠ½ΠΎ ΠΏΠ°ΡΠ°Π»Π»Π΅Π»ΡΠ½ΠΎΠΉ Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΠΎ ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΠ½ΠΎΠΉ cΡΡΠ°ΡΠ΅Π³ΠΈΠΈ ΠΎΡΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΡ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ ΡΠΎΡΠΌΠ°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π·Π°Π΄Π°ΡΠΈ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΠΎ-Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΎΡΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΡ Π°Π»Π³ΠΎΡΠΈΡΠΌΠΎΠ² Π² ΠΈΠ½ΡΠ΅Π³ΡΠ°ΡΠΈΠΈ Ρ ΡΠ°ΠΉΠ»ΠΈΠ½Π³ΠΎΠΌ.
ΠΠ»ΠΎΡΠ½ΡΠ΅ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΎΠ±Π»Π°ΡΡΠΈ Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΠΉ Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΡΠΌΠΈ ΡΠ°ΠΉΠ»Π°ΠΌΠΈ
The hexagonal tiling in application to algorithms with a two-dimensional computational domain is investigated. A formal definition of a parametrized hexagonal tiling is proposed. Necessary and sufficient conditions for a dense coverage of the computational domain by hexagonal tiles are obtained.Communicated by Corresponding Member Leonid A. YanovichΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ Π°ΡΠΏΠ΅ΠΊΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π° ΠΊ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ°ΠΌ Ρ Π΄Π²ΡΠΌΠ΅ΡΠ½ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΡΡ Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΠΉ. ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΎ ΡΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠ΅ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π°. ΠΠΎΠ»ΡΡΠ΅Π½Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΠ΅ ΠΈ Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΡΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ ΠΏΠ»ΠΎΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΎΠ±Π»Π°ΡΡΠΈ Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΠΉ Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΡΠΌΠΈ ΡΠ°ΠΉΠ»Π°ΠΌΠΈ.ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ ΡΠ»Π΅Π½ΠΎΠΌ-ΠΊΠΎΡΡΠ΅ΡΠΏΠΎΠ½Π΄Π΅Π½ΡΠΎΠΌ Π. Π. Π―Π½ΠΎΠ²ΠΈΡΠ΅
ΠΠ½Π°Π»ΠΈΠ· Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΡΡ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠ΅ΠΉ Π² Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΠΎΠΌ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π΅
Tiling is a widely used technique to solve the problems of the efficient use of multilevel memory and optimize data exchanges when developing both sequential and parallel programs. This paper investigates the problem of obtaining global dependencies, i.e. informational dependencies between tiles. The problem is solved in the context of parametrized hexagonal tiling in application to algorithms with a two-dimensional computational domain. The paper includes a formalized definition of the hexagonal tile and the criteria for dense coverage of the computational domain with hexagonal tiles. Herein, we have formulated a statement that permits to obtain all global dependencies between tiles. Formulas are constructed for the determination of sets of iterations of hexagonal tiles generating these dependencies. The sets of iterations that generate global dependencies are obtained in the form of polyhedra with an explicit expression of their boundaries.Π’Π΅Ρ
Π½ΠΈΠΊΠ° ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π° ΡΠΈΡΠΎΠΊΠΎ ΠΏΡΠΈΠΌΠ΅Π½ΡΠ΅ΡΡΡ Π½Π° ΠΏΡΠ°ΠΊΡΠΈΠΊΠ΅ Π΄Π»Ρ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π·Π°Π΄Π°Ρ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ½ΠΎΠ³ΠΎΡΡΠΎΠ²Π½Π΅Π²ΠΎΠΉ ΠΏΠ°ΠΌΡΡΠΈ ΠΈ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΠΎΠ±ΠΌΠ΅Π½ΠΎΠ² Π΄Π°Π½Π½ΡΠΌΠΈ ΠΏΡΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ΅ ΠΊΠ°ΠΊ ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΠ½ΡΡ
, ΡΠ°ΠΊ ΠΈ ΠΏΠ°ΡΠ°Π»Π»Π΅Π»ΡΠ½ΡΡ
ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌ. Π ΡΠ°Π±ΠΎΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΡΡΡ Π·Π°Π΄Π°ΡΠ° ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΡΡ
, ΡΡΠΎΠ²Π½Ρ ΡΠ°ΠΉΠ»ΠΎΠ², Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠ΅ΠΉ. ΠΠ°Π΄Π°ΡΠ° ΡΠ΅ΡΠ°Π΅ΡΡΡ Π² ΠΊΠΎΠ½ΡΠ΅ΠΊΡΡΠ΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΠΉΠ»ΠΈΠ½Π³Π° ΠΊ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ°ΠΌ Ρ Π΄Π²ΡΠΌΠ΅ΡΠ½ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΡΡ Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΠΉ. ΠΡΠΈΠ²Π΅Π΄Π΅Π½ΠΎ ΡΠΎΡΠΌΠ°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠ΅ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΠΉΠ»Π°, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΠΊΡΠΈΡΠ΅ΡΠΈΠΈ ΠΏΠ»ΠΎΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΎΠ±Π»Π°ΡΡΠΈ Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΠΉ Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΡΠΌΠΈ ΡΠ°ΠΉΠ»Π°ΠΌΠΈ. CΡΠΎΡΠΌΡΠ»ΠΈΡΠΎΠ²Π°Π½ΠΎ ΠΈ Π΄ΠΎΠΊΠ°Π·Π°Π½ΠΎ ΡΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΈΠ΅, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡΠ΅Π΅ ΠΏΠΎΠ»ΡΡΠΈΡΡ Π²ΡΠ΅ Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΡΠ΅ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠ°ΠΉΠ»Π°ΠΌΠΈ. ΠΠΎΡΡΡΠΎΠ΅Π½Ρ ΡΠΎΡΠΌΡΠ»Ρ, Π΄Π°ΡΡΠΈΠ΅ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΡ ΠΌΠ½ΠΎΠΆΠ΅ΡΡΠ²Π° ΠΈΡΠ΅ΡΠ°ΡΠΈΠΉ Π³Π΅ΠΊΡΠ°Π³ΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΡΠ°ΠΉΠ»ΠΎΠ², ΠΏΠΎΡΠΎΠΆΠ΄Π°ΡΡΠΈΡ
ΡΡΠΈ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ. ΠΠ½ΠΎΠΆΠ΅ΡΡΠ²Π° ΠΈΡΠ΅ΡΠ°ΡΠΈΠΉ, ΠΏΠΎΡΠΎΠΆΠ΄Π°ΡΡΠΈΡ
Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΡΠ΅ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ, ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ Π² Π²ΠΈΠ΄Π΅ ΠΌΠ½ΠΎΠ³ΠΎΠ³ΡΠ°Π½Π½ΠΈΠΊΠΎΠ² Ρ ΡΠ²Π½ΡΠΌ Π²ΡΡΠ°ΠΆΠ΅Π½ΠΈΠ΅ΠΌ ΠΈΡ
Π³ΡΠ°Π½ΠΈΡ
Parkinsonβs disease, epilepsy, and amyotrophic lateral sclerosisβemerging role of AMPA and kainate subtypes of ionotropic glutamate receptors
Ionotropic glutamate receptors (iGluRs) mediate the majority of excitatory neurotransmission and are implicated in various neurological disorders. In this review, we discuss the role of the two fastest iGluRs subtypes, namely, Ξ±-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and kainate receptors, in the pathogenesis and treatment of Parkinsonβs disease, epilepsy, and amyotrophic lateral sclerosis. Although both AMPA and kainate receptors represent promising therapeutic targets for the treatment of these diseases, many of their antagonists show adverse side effects. Further studies of factors affecting the selective subunit expression and trafficking of AMPA and kainate receptors, and a reasonable approach to their regulation by the recently identified novel compounds remain promising directions for pharmacological research
Π‘ΠΠΠΠΠΠΠ ΠΠ ΠΠΠΠΠΠ’ΠΠ«Π₯ ΠΠΠΠΠΠΠΠΠ«Π₯ ΠΠΠΠ Π«Π’ΠΠ ΠΠ ΠΠ‘ΠΠΠΠ ΠΠΠΠΠ‘ΠΠΠ Π¦ΠΠ ΠΠΠΠΠ―, Π‘Π’ΠΠΠΠΠΠΠΠ ΠΠΠΠΠΠΠΠ ΠΠΠΠΠ‘ΠΠΠΠ ΠΠ’Π’ΠΠ ΠΠΠ―
The process has been investigated and technological parameters for spraying gradient plasma coatings on the basis of zirconium dioxide stabilized with ytterbium dioxide have been optimized in the paper.ΠΡΠΎΠ²Π΅Π΄Π΅Π½Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠ° ΠΈ ΠΎΠΏΡΠΈΠΌΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Ρ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡ Π½Π°ΠΏΡΠ»Π΅Π½ΠΈΡ Π³ΡΠ°Π΄ΠΈΠ΅Π½ΡΠ½ΡΡ
ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π΄ΠΈΠΎΠΊΡΠΈΠ΄Π° ΡΠΈΡΠΊΠΎΠ½ΠΈΡ, ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π΄ΠΈΠΎΠΊΡΠΈΠ΄ΠΎΠΌ ΠΈΡΡΠ΅ΡΠ±ΠΈΡ
ΠΠΠ€ΠΠΠ¦ΠΠΠΠΠ«Π ΠΠ‘ΠΠΠΠΠΠΠΠ― ΠΠΠ‘ΠΠ Π ΠΠΠΠΠ‘Π’Π Π£ΠΠ’ΠΠΠΠ«Π₯ ΠΠΠΠ ΠΠ’ΠΠΠΠ«Π₯ ΠΠΠΠ¨ΠΠ’ΠΠΠ¬Π‘Π’Π Π£ ΠΠΠΠ¬ΠΠ«Π₯ Π ΠΠΠΠ ΠΠΠΠΠ§ΠΠΠ ΠΠΠΠΠΠ«. ΠΠΠΠ‘ΠΠΠΠ ΠΠΠΠΠΠ§ΠΠ‘ΠΠΠΠ Π‘ΠΠ£Π§ΠΠ―
Introduction. Currently, there is no global consensus regarding the management of breast cancer patients with implant-associated infections. Some studies clearly recommend their removal and surgical debridement with consecutive antimicrobial treatment, while others prefer long-term antibacterial therapy (at least 1 month) with the effectiveness of such conservative approach of 36β73 %.Case description. A 43-year-old patient suffering from brca1-positive right breast cancer t2n0m0 (invasive carcinoma of non-specific type g3, er β 8, pgr β 0, her-2/neu β 0, ki67 (%) β less than 20 %), underwent radical skin-preserving mastectomy on the right with simultaneous implant reconstruction and preventive subcutaneous mastectomy on the left with simultaneous implant reconstruction. Peri-implant infection in the left breast was observed on the 21st day after surgery.Results. The patient received empirical therapy with cefepim. Microbiological examination of the punctate revealed the causative agent of infection β methicillin-resistant staphylococcus aureus (mrsa) (1Γ105cfu/ml). Daptomycin 6 mg/kg/day was added to therapy. After 8 weeks, the patient received oral moxifloxacin 400 once daily, for another 3 weeks. A complete response was achieved. The patient has no signs of infection for 3 years.Conclusion. Long-term etiotropic antibacterial therapy with daptomycin followed by oral moxifloxacin resulted in a stable clinical effect.ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ. Π Π½Π°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ Π² ΠΌΠΈΡΠ΅ Π½Π΅Ρ Π΅Π΄ΠΈΠ½ΠΎΠ³ΠΎ ΠΌΠ½Π΅Π½ΠΈΡ Π² ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΈ ΡΠ°ΠΊΡΠΈΠΊΠΈ Π²Π΅Π΄Π΅Π½ΠΈΡ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠΊ Ρ ΡΠ°ΠΊΠΎΠΌ ΠΌΠΎΠ»ΠΎΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ Ρ ΠΈΠΌΠΏΠ»Π°Π½Ρ-Π°ΡΡΠΎΡΠΈΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌΠΈ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΡΠΌΠΈ. Π ΠΎΠ΄Π½ΠΈΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠ·Π½Π°ΡΠ½ΠΎ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½Ρ ΠΈΡ
ΡΠ΄Π°Π»Π΅Π½ΠΈΠ΅ ΠΈ Ρ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠ°Π½Π°ΡΠΈΡ c ΠΏΠΎΡΠ»Π΅Π΄ΡΡΡΠ΅ΠΉ Π°Π½ΡΠΈΠ±Π°ΠΊΡΠ΅ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠ΅ΠΉ, Π² Π΄ΡΡΠ³ΠΈΡ
β ΠΎΡΠ΄Π°Π΅ΡΡΡ ΠΏΡΠ΅Π΄ΠΏΠΎΡΡΠ΅Π½ΠΈΠ΅ Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π°Π½ΡΠΈΠΌΠΈΠΊΡΠΎΠ±Π½ΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ (Π½Π΅ ΠΌΠ΅Π½Π΅Π΅ 1 ΠΌΠ΅Ρ), ΠΏΡΠΈ ΡΡΠΎΠΌ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΊΠΎΠ½ΡΠ΅ΡΠ²Π°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄Π° Π΄ΠΎΡΡΠΈΠ³Π°Π΅Ρ 36β73 %.ΠΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΠ»ΡΡΠ°ΠΉ. ΠΠ°ΡΠΈΠ΅Π½ΡΠΊΠ΅ 43 Π»Π΅Ρ, ΡΡΡΠ°Π΄Π°ΡΡΠ΅ΠΉ BRCa1-ΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΡΠ°ΠΊΠΎΠΌ ΠΏΡΠ°Π²ΠΎΠΉ ΠΌΠΎΠ»ΠΎΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ t2n0M0 (ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½Π°Ρ ΠΊΠ°ΡΡΠΈΠ½ΠΎΠΌΠ° Π½Π΅ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΈΠΏΠ° G3, eR β 8, PgR β 0, Her-2/neu β 0, Ki67 (%) β ΠΌΠ΅Π½Π΅Π΅ 20 %), Π±ΡΠ»ΠΈ Π²ΡΠΏΠΎΠ»Π½Π΅Π½Ρ ΡΠ°Π΄ΠΈΠΊΠ°Π»ΡΠ½Π°Ρ ΠΊΠΎΠΆΠ΅ΡΠΎΡ
ΡΠ°Π½Π½Π°Ρ ΠΌΠ°ΡΡΡΠΊΡΠΎΠΌΠΈΡ ΡΠΏΡΠ°Π²Π° Ρ ΠΎΠ΄Π½ΠΎΠΌΠΎΠΌΠ΅Π½ΡΠ½ΠΎΠΉ ΡΠ΅ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠ΅ΠΉ ΠΈΠΌΠΏΠ»Π°Π½ΡΠΎΠΌ ΠΈ ΠΏΡΠΎΡΠΈΠ»Π°ΠΊΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΏΠΎΠ΄ΠΊΠΎΠΆΠ½Π°Ρ ΠΌΠ°ΡΡΡΠΊΡΠΎΠΌΠΈΡ ΡΠ»Π΅Π²Π° Ρ ΠΎΠ΄Π½ΠΎΠΌΠΎΠΌΠ΅Π½ΡΠ½ΠΎΠΉ ΡΠ΅ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠ΅ΠΉ ΠΈΠΌΠΏΠ»Π°Π½ΡΠΎΠΌ. Π½Π° 21-Π΅ ΡΡΡ ΠΏΠΎΡΠ»Π΅ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ ΡΠ°Π·Π²ΠΈΠ»Π°ΡΡ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΡ Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΠΈΠΌΠΏΠ»Π°Π½ΡΠ° Π»Π΅Π²ΠΎΠΉ ΠΌΠΎΠ»ΠΎΡΠ½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΠ°ΡΠΈΠ΅Π½ΡΠΊΠ΅ ΡΠΌΠΏΠΈΡΠΈΡΠ΅ΡΠΊΠΈ Π±ΡΠ»Π° Π½Π°Π·Π½Π°ΡΠ΅Π½Π° ΡΠ΅ΡΠ°ΠΏΠΈΡ ΡΠ΅ΡΠ΅ΠΏΠΈΠΌΠΎΠΌ. ΠΡΠΈ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΠΏΡΠ½ΠΊΡΠ°ΡΠ° Π±ΡΠ» Π²ΡΡΠ²Π»Π΅Π½ Π²ΠΎΠ·Π±ΡΠ΄ΠΈΡΠ΅Π»Ρ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΈ β ΠΌΠ΅ΡΠΈΡΠΈΠ»Π»ΠΈΠ½-ΡΠ΅Π·ΠΈΡΡΠ΅Π½ΡΠ½ΡΠΉ Π·ΠΎΠ»ΠΎΡΠΈΡΡΡΠΉ ΡΡΠ°ΡΠΈΠ»ΠΎΠΊΠΎΠΊΠΊ (MRSA) Π² ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅ 1Γ105ΠΊΠΠ/ΠΌΠ». ΠΊ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ Π±ΡΠ» Π΄ΠΎΠ±Π°Π²Π»Π΅Π½ Π΄Π°ΠΏΡΠΎΠΌΠΈΡΠΈΠ½ 6 ΠΌΠ³/ΠΊΠ³/ΡΡΡ. Π§Π΅ΡΠ΅Π· 8 Π½Π΅Π΄ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΊΠ° Π±ΡΠ»Π° ΠΏΠ΅ΡΠ΅Π²Π΅Π΄Π΅Π½Π° Π½Π° ΠΏΠ΅ΡΠΎΡΠ°Π»ΡΠ½ΡΠΉ ΠΌΠΎΠΊΡΠΈΡΠ»ΠΎΠΊΡΠ°ΡΠΈΠ½ 400 ΠΌΠ³ 1 ΡΠ°Π· Π² ΡΡΡ, ΠΊΠΎΡΠΎΡΡΠΉ ΠΏΠΎΠ»ΡΡΠ°Π»Π° Π΅ΡΠ΅ 3 Π½Π΅Π΄. Π½Π° ΡΠΎΠ½Π΅ Π»Π΅ΡΠ΅Π½ΠΈΡ Π±ΡΠ» ΠΏΠΎΠ»ΡΡΠ΅Π½ ΠΏΠΎΠ»Π½ΡΠΉ ΡΡΡΠ΅ΠΊΡ. ΠΠΎΠ»ΡΠ½Π°Ρ Π±Π΅Π· ΠΏΡΠΈΠ·Π½Π°ΠΊΠΎΠ² ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΈ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ 3 Π»Π΅Ρ.ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅. ΠΠ»ΠΈΡΠ΅Π»ΡΠ½Π°Ρ ΡΡΠΈΠΎΡΡΠΎΠΏΠ½Π°Ρ Π°Π½ΡΠΈΠ±Π°ΠΊΡΠ΅ΡΠΈΠ°Π»ΡΠ½Π°Ρ ΡΠ΅ΡΠ°ΠΏΠΈΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π΄Π°ΠΏΡΠΎΠΌΠΈΡΠΈΠ½Π° Ρ ΠΏΠ΅ΡΠ΅Ρ
ΠΎΠ΄ΠΎΠΌ Π½Π° ΠΏΠ΅ΡΠΎΡΠ°Π»ΡΠ½ΡΠΉ ΠΌΠΎΠΊΡΠΈΡΠ»ΠΎΠΊΡΠ°ΡΠΈΠ½ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»Π° ΠΏΠΎΠ»ΡΡΠΈΡΡ ΡΡΠΎΠΉΠΊΠΈΠΉ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΡΡΠ΅ΠΊΡ ΠΈ ΡΠ²ΠΎΠ΅Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎ ΠΏΡΠΎΠ²Π΅ΡΡΠΈ Π°Π΄ΡΡΠ²Π°Π½ΡΠ½ΠΎΠ΅ ΠΏΡΠΎΡΠΈΠ²ΠΎΠΎΠΏΡΡ
ΠΎΠ»Π΅Π²ΠΎΠ΅ Π»Π΅ΡΠ΅Π½ΠΈΠ΅
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