117 research outputs found
Hollow core Bragg fiber with antiresonant intermediate layer
By means of the transfer matrix method, the optical properties of fibers with
a distinct intermediate layer between a hol-low core and periodic cladding are
calculated. The periodic cladding consists of two types of the alternating
layers. The intermediate layer has distinct thickness and refractive index.
Depending on these parameters, the fiber can work in the single-mode or
multi-mode regimes. In the multi-mode regime, the optical loss of the smallest
loss mode can be de-creased by increasing the thickness of the layer. In the
single-mode regime, the optical loss falls with a rise in the refrac-tive index
of the intermediate layer. The optical properties of the fiber are determined
by the antiresonance reflection from the intermediate layer and the Bragg
reflection from the periodic cladding. Selecting the parameters of the
interme-diate layer, the optical loss of the fiber in the single-mode regime
can be reduced by an order of magnitude over the loss of the traditional Bragg
fiber.Comment: 9 pages, 4 figure
Russian specialized periodicals in culture as a modern communicative channel
The key factor of modern society development is mass media, and nowadays its demanded business model is the translation of advertising informatio
Effect of alloying elements (Zr, Hf, Co), heat and mechanical treatment conditions on the phase composition and magnetic properties of SmFe11Ti compounds with ThMn12 structure
The results of thermomagnetic, metallographic and X-ray diffraction phase analysis as well as the measurements of specific magnetization (Οs), Curie temperature (TC), coercive force (HC) of (Sm,M)(Fe,M)12-xTix alloys samples, where M = Zr, Hf, Co with the ThMn12 main phase structure (1-12) are presented. The effect of the annealing temperature and the cooling rate on the formation of 1-12 phase and its magnetic properties, including the effect of high-energy milling on the magnetic hysteresis properties and alloys structure are described. It was found that the highest magnetic characteristics such as Οs = 112.6 emu/g and TC = 600Β°C are attained in the (Sm0.8Zr0.2)(Fe0.75Co0.25)11.4Ti0.6 alloy after its annealing at 1050 Β°C and rapid cooling. It is noted that a mechanical milling of the alloy leads to 1-12 phase amorphization which accompanied by an Ξ±-(Fe) or metal Co phases impurity formation. Β© 2018 The Authors, published by EDP Sciences.The work was supported by the State contracts No. 3.6121.2017/ 8.9 between UrFU and the Ministry of Education and Science of Russian Federation and by the Fund of assistance to development of small enterprises in scientific-technical sphere No. 11996GU / 017
ΠΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ ΡΡΠ΄Π΅Π±Π½ΡΡ ΠΏΠΎΡΡΡΠ΅ΡΠ½ΡΡ ΡΠΊΡΠΏΠ΅ΡΡΠΈΠ· Π² ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΡ ΡΡΠ»ΠΎΠ²ΠΈΡΡ
Based on the analysis of the essence of forensic facial identification the article describes the framework of its methodological support considering the specifics of the research objects. The genesis of development of analysis methods for portrait images is briefly presented. Attention is paid to the features of the research objects with the advent of digital technologies and the use of software for work with images. Specific examples of forensic facial identification assigned in criminal and civil cases show the features of the research objects and the formation of new methodological approaches to the solution of both identification and diagnostic tasks.Π ΡΡΠ°ΡΡΠ΅ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π°Π½Π°Π»ΠΈΠ·Π° ΡΡΡΠ½ΠΎΡΡΠΈ ΡΡΠ΄Π΅Π±Π½ΡΡ
ΠΏΠΎΡΡΡΠ΅ΡΠ½ΡΡ
ΡΠΊΡΠΏΠ΅ΡΡΠΈΠ· Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ ΠΏΡΠΈΠ½ΡΠΈΠΏΡ ΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ Ρ ΡΡΠ΅ΡΠΎΠΌ ΡΠΏΠ΅ΡΠΈΡΠΈΠΊΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠΎΠ² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ. ΠΡΠ°ΡΠΊΠΎ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ Π³Π΅Π½Π΅Π·ΠΈΡ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² Π°Π½Π°Π»ΠΈΠ·Π° ΠΏΠΎΡΡΡΠ΅ΡΠ½ΡΡ
ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΉ. ΠΠ±ΡΠ°ΡΠ΅Π½ΠΎ Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ Π½Π° ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠΎΠ² ΡΠΊΡΠΏΠ΅ΡΡΠΈΠ·Ρ Π² ΡΠ²Π΅ΡΠ΅ ΠΏΠΎΡΠ²Π»Π΅Π½ΠΈΡ ΡΠΈΡΡΠΎΠ²ΡΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ ΠΈ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ² ΡΠ°Π±ΠΎΡΡ Ρ ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΡΠΌΠΈ. ΠΠ° ΠΊΠΎΠ½ΠΊΡΠ΅ΡΠ½ΡΡ
ΠΏΡΠΈΠΌΠ΅ΡΠ°Ρ
ΡΡΠ΄Π΅Π±Π½ΡΡ
ΠΏΠΎΡΡΡΠ΅ΡΠ½ΡΡ
ΡΠΊΡΠΏΠ΅ΡΡΠΈΠ·, Π½Π°Π·Π½Π°ΡΠ°Π΅ΠΌΡΡ
ΠΏΠΎ ΡΠ³ΠΎΠ»ΠΎΠ²Π½ΡΠΌ ΠΈ Π³ΡΠ°ΠΆΠ΄Π°Π½ΡΠΊΠΈΠΌ Π΄Π΅Π»Π°ΠΌ, ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ Π½ΠΎΠ²ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠ΄Ρ
ΠΎΠ΄ΠΎΠ² ΠΊ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΎΠ±ΡΠ΅ΠΊΡΠΎΠ² ΠΈ ΡΠ΅ΡΠ΅Π½ΠΈΡ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΈ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π·Π°Π΄Π°Ρ
ΠΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΉ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° ΠΊΠ°ΠΊ ΠΎΠ±ΡΠ΅ΠΊΡΠΎΠ² ΡΡΠ΄Π΅Π±Π½ΠΎΠΉ ΠΏΠΎΡΡΡΠ΅ΡΠ½ΠΎΠΉ ΡΠΊΡΠΏΠ΅ΡΡΠΈΠ·Ρ
The authors present an analysis of the practice of forensic portrait examinations appointed on criminal and civil cases to the Russian Federal Centre of Forensic Science of the Ministry of Justice of the Russian Federation, the objects of which have been atypical. These have been human facial images performed in various techniques: engravings on stone, cartoons, caricatures, dolls made in workshops and authorβs studios. The authors propose a new methodical approach, taking into account the technology of manufacturing such human images, they also consider their features.ΠΡΠΎΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΠΏΡΠ°ΠΊΡΠΈΠΊΠΈ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π° ΡΡΠ΄Π΅Π±Π½ΡΡ
ΠΏΠΎΡΡΡΠ΅ΡΠ½ΡΡ
ΡΠΊΡΠΏΠ΅ΡΡΠΈΠ·, Π½Π°Π·Π½Π°ΡΠ°Π΅ΠΌΡΡ
ΠΏΠΎ ΡΠ³ΠΎΠ»ΠΎΠ²Π½ΡΠΌ ΠΈ Π³ΡΠ°ΠΆΠ΄Π°Π½ΡΠΊΠΈΠΌ Π΄Π΅Π»Π°ΠΌ Π² Π€ΠΠ£ Π Π€Π¦Π‘Π ΠΏΡΠΈ ΠΠΈΠ½ΡΡΡΠ΅ Π ΠΎΡΡΠΈΠΈ, Ρ Π½Π΅ΡΠΈΠΏΠΈΡΠ½ΡΠΌΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠ°ΠΌΠΈ. ΠΡΠΎ ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΡ Π»ΠΈΡΠ° ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ°, Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΠ΅ Π² ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠ΅Ρ
Π½ΠΈΠΊΠ°Ρ
: Π³ΡΠ°Π²ΠΈΡΠΎΠ²ΠΊΠΈ Π½Π° ΠΊΠ°ΠΌΠ½Π΅, ΡΠ°ΡΠΆΠΈ, ΠΊΠ°ΡΠΈΠΊΠ°ΡΡΡΡ, ΠΊΡΠΊΠ»Ρ, ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½Π½ΡΠ΅ Π² ΠΌΠ°ΡΡΠ΅ΡΡΠΊΠΈΡ
ΠΈ Π°Π²ΡΠΎΡΡΠΊΠΈΡ
ΡΡΡΠ΄ΠΈΡΡ
. ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ Π½ΠΎΠ²ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄, ΡΡΠΈΡΡΠ²Π°ΡΡΠΈΠΉ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡ ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΈΡ ΡΠ°ΠΊΠΈΡ
ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΉ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ°, ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ Π΅Π³ΠΎ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ
Magnetic properties of R(Co0.88Fe0.12)2 quasi-binary compounds
In this paper the results of magnetic properties study for a series samples of R(Co0.88Fe0.12)2 type intermetallic compounds with a heavy rare-earth elements (R = Gd, Tb, Dy, Ho, Er) are presented. Such materials having a plateau-like temperature dependences of magnetic entropy change in the temperature range lower Curie point are considered as a promising functional materials for magnetic refrigerators. Their phase composition was controlled by X-ray diffraction analysis with a help of Bruker D8 Advance diffractometer. Magnetic field magnetization dependences - M(H) were measured using a SQUID magnetometer (MPMS-XL-7, Quantum Design) within the temperature range of 5 - 600 K in magnetic fields up to 5600 kA/m. The crystal lattice parameter - a, Curie temperature - TC, coercivity - Hc and residual magnetization - Mr values are analyzed as a functions of R-element atomic number. For compounds with Tb, Dy, Ho and Er the second picks on the high field susceptibility temperature dependences - Οhf (T) were found in the temperature range lower their TC. Β© Published under licence by IOP Publishing Ltd.Ministry of Science and Higher Education of the Russian Federationβ 02.3.6121.2017/8.9This work has been supported by the State contract No. 3.6121.2017/8.9 between UrFU and Ministry of Science and High Education of Russian Federation, and by Act 211 Government of the Russian Federation, contract β 02.A03.21.0006
Magnetocaloric effect Gd(Ni0.99Fe0.12)2
This work has been supported by the State contracts No. 1362 between UrFU and the Ministry of Education and Science of Russian Federation and by the Fund of assistance to development of small forms enterprises in scientific-technical sphere No. 6576GU/2015
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