335 research outputs found
Fabrication of probes for scanning near-field optical microscopy using focused ion beam
The results were obtained using the infrastructure of the Center for Shared Use βNanotechnologyβ of the Southern Federal University
Effect of thermomechanical impacts on the deformation of thin polyimide films at uniaxial tension
Thermomechanical studies of the dependence of deformation on time (t) and temperature (T) for various static stresses in polyimide under uniaxial tension were carried out. Temporal deformation curves for static stresses in the range from 75 to 110 MPa consist of two stages: 1 - increase; 2 - exit to saturation, which is associated with a change in the nature of structural transformations of macromolecules, due to the action of the static stresses. An increase in temperature and voltage leads to an increase in the dependence e (Π’). This is due to the intensification of the processes of structuring macromolecules with increasing temperature and are supplemented by processes of breaking bonds between macromolecules, which increase the strain rate. Experimental data are described in terms of exponential and linear models
Kinetic parameters of the uranium luminescence in Lif crystals
The results of researches with nanosecond time resolution of kinetic characteristics of luminescence buildup and decay in crystals LiF(U)-O at 300 K under action of both laser pulse with energy 3,68 eV and electron pulse with energy 300 keV have been presented. Influence of excite method on kinetic characteristics of uranium luminescence buildup and influence of uranium on kinetic characteristics of oxygen luminescence in crystal were establishe
Mineralogical and geochemical features of the Manus Basin hydrothermal sulfide ores, Bismarck Sea
Paragenetic mineral assemblages have been established based on
mineralogical, chemical, and isotope (S, Pb) studies, and the sequence
of deposition has been defined in hydrothennal sulfide structures in a
typical back-arc basin. The ores in the Manus basin have a prominent
Zn specialization (sphalerite, wΓΌrtzite, and fe-sphalerite). An association
of Fe-spbalerite and galena with Ag sulfosalts is noted that is not
characteristic of typical midocean ridge hydrothennal systems. The
average 34S in the sulfide minerals is 3.5%o, which corresponds to the
medium-temperature sphalerite stage in hydrothermal mineral fonnation.
It is suggested that the metal source is located in the relatively acid
rocks of the island-arc tholeiitic series and possibly in sediments
Investigation of Mechanical Properties of Polyimide- Polyethyl-eneterephthalate System
The study of the physico-mechanical properties of new composite materials based on polyimide (PI) and polyethyleneterephthalate (PET) was carried out. Dependences of Ο from Ξ΅ for different concentrations of the second component and irradiation doses were measured. The experimental data are described satisfactorily by the exponential cascadeprobabilistic model
Stone Age Research in the NarvaβLuga Klint Bay Area in 2005β2014
The NarvaβLuga micro-region, situated on the border of Estonia and Russia in north-eastern Europe, has been the target of international and interdisciplinary research conducted annually between 2005 and 2014. During this time, altogether 42 new archaeological sites have been discovered, and many sites have also been excavated β in addition, a large amount of natural scientific data has been collected. All in all, over 60 Stone Age and Bronze Age sites are currently known in this micro-region. The sites date mostly between the late 6th and late 3rd millennia calBC, that is, to the cultural contexts of Narva Ware, Comb Ware, and Corded Ware. In this paper, some of the main results of the archaeological studies made during the last decade are briefly summarised
Study of deformation dependence on time in polyethylene terephthalate for different static loads and irradiation doses
Complex experiments were conducted on deformation dependence on time for different static loads and irradiation doses in polyethylene terephthalate. Curves of time (t) dependence of deformation (?) show a significant change in the behavior of the material after irradiation. The obtained dependence curves of on t for both non-irradiated and irradiated materials are satisfactorily described by cascade-probability model
Novel technology for fabrication of probe tips for SPM using focused ion beam induced deposition method
The work was done through a grant from the Russian Science Foundation (project No. 18-79-00175) using the equipment of the Research and Education Center and the Nanotechnology Joint Use Center of the Southern Federal University (Taganrog)
Study of the influence of the electron irradiation dose on the deformation of Mylar films taking into account the processes of destruction and crosslinking
Experimental studies of the dependence of the deformation [epsilon] on the dose of electron irradiation D taking into account the processes of destruction and crosslinking for films of the Mylar type have been carried out. It was obtained that the dependence of [epsilon] on D for the process of cross-linking is described by a linear and destruction by an exponential function
ΠΡΠΎΠ½Ρ ΠΎΡΠΎΠ½ΠΎΠ³ΡΠ°ΡΠΈΡ Π² ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠ΅ Π±ΡΠΎΠ½Ρ ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΡΡΠΌΡ Ρ Π΄Π΅ΡΠ΅ΠΉ
Bronchophonography (BPG) is a functional diagnostic method for the breathing pattern assessment. It is based on an analysis of frequency-peak parameters of the breathing sound spectrum. The method allows to fix a temporary acoustic curve arising during the respiration with the subsequent mathematical processing of the data. The breathing sound fluctuation amplitude ranges within 0-12.4 kHz that permits to calculate an acoustic breathing work equivalent the lung work aimed to the breathing. Hardware-software complex displays the fixed breathing sounds and evaluates their parameters not revealed during the physical examination. The highfrequency range (5.0-12.4 kHz) corresponds to wheezing.We examined 76 bronchial asthmatic children aged from 1 to 14 years. The control group involved 48 children with no lung pathology. The examination included clinical, spirography and BPG testing.The BPG method contributes to the routine lung functional testing and allows evaluating the bronchial asthma severity in children.ΠΡΠΎΠ½Ρ
ΠΎΡΠΎΠ½ΠΎΠ³ΡΠ°ΡΠΈΡ β ΠΌΠ΅ΡΠΎΠ΄ ΠΎΡΠ΅Π½ΠΊΠΈ Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠ°ΡΡΠ΅ΡΠ½Π°. ΠΠ°Π½Π½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ ΠΎΡΠ½ΠΎΠ²ΡΠ²Π°Π΅ΡΡΡ Π½Π° Π°Π½Π°Π»ΠΈΠ·Π΅ Π°ΠΌΠΏΠ»ΠΈΡΡΠ΄Π½ΠΎ-ΡΠ°ΡΡΠΎΡΠ½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΡΠΏΠ΅ΠΊΡΡΠ° Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½ΡΡ
ΡΡΠΌΠΎΠ². ΠΠ΅ΡΠΎΠ΄ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ Π·Π°ΡΠΈΠΊΡΠΈΡΠΎΠ²Π°ΡΡ Π²ΡΠ΅ΠΌΠ΅Π½Π½ΡΡ ΠΊΡΠΈΠ²ΡΡ Π°ΠΊΡΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΡΠΌΠ°, Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡΠ΅Π³ΠΎ ΠΏΡΠΈ Π΄ΡΡ
Π°Π½ΠΈΠΈ, Ρ ΠΏΠΎΡΠ»Π΅Π΄ΡΡΡΠ΅ΠΉ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΎΠΉ. Π§Π°ΡΡΠΎΡΠ° ΠΊΠΎΠ»Π΅Π±Π°Π½ΠΈΠΉ Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½ΡΡ
ΡΡΠΌΠΎΠ² ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΠ΅ΡΡΡ Π² ΠΏΡΠ΅Π΄Π΅Π»Π°Ρ
ΠΎΡ 0 Π΄ΠΎ 12,4 ΠΊΠΡ Ρ ΠΏΠΎΡΠ»Π΅Π΄ΡΡΡΠΈΠΌ ΡΠ°ΡΡΠ΅ΡΠΎΠΌ "Π°ΠΊΡΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ" ΡΠ°Π±ΠΎΡΡ Π΄ΡΡ
Π°Π½ΠΈΡ ΠΊΠ°ΠΊ ΡΠΊΠ²ΠΈΠ²Π°Π»Π΅Π½ΡΠ° ΡΠ°Π±ΠΎΡΡ Π»Π΅Π³ΠΊΠΈΡ
, Π·Π°ΡΡΠ°ΡΠΈΠ²Π°Π΅ΠΌΠΎΠΉ Π½Π° ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΠΈΠ΅ Π°ΠΊΡΠ° Π΄ΡΡ
Π°Π½ΠΈΡ. ΠΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΠΉ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΎΡΠΎΠ±ΡΠ°ΠΆΠ°ΡΡ ΡΠΈΠΊΡΠΈΡΡΠ΅ΠΌΡΠ΅ Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½ΡΠ΅ ΡΡΠΌΡ Π½Π° ΡΠΊΡΠ°Π½Π΅ ΠΌΠΎΠ½ΠΈΡΠΎΡΠ°, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΎΠ±ΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎ ΠΎΡΠ΅Π½ΠΈΠ²Π°ΡΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½ΡΡ
ΡΡΠΌΠΎΠ², ΠΊΠΎΡΠΎΡΡΠ΅ Π½Π΅ Π²ΡΡΠ²Π»ΡΡΡΡΡ ΠΏΡΠΈ ΡΠΈΠ·ΠΈΠΊΠ°Π»ΡΠ½ΠΎΠΌ ΠΎΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ. ΠΠΎΠ½Π° Π²ΡΡΠΎΠΊΠΈΡ
ΡΠ°ΡΡΠΎΡ (Π²ΡΡΠ΅ 5 ΠΊΠΡ) ΠΊΠΎΡΡΠ΅Π»ΠΈΡΡΠ΅Ρ ΡΠΎ Π·Π²ΡΠΊΠΎΠ²ΡΠΌΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°ΠΌΠΈ ΡΡΡ
ΠΈΡ
Ρ
ΡΠΈΠΏΠΎΠ².ΠΡΠ»ΠΎ ΠΎΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΎ 76 Π΄Π΅ΡΠ΅ΠΉ Ρ Π±ΡΠΎΠ½Ρ
ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΡΡΠΌΠΎΠΉ Π² Π²ΠΎΠ·ΡΠ°ΡΡΠ΅ ΠΎΡ 1 Π³ΠΎΠ΄Π° Π΄ΠΎ 14 Π»Π΅Ρ. ΠΠΎΠ½ΡΡΠΎΠ»ΡΠ½Π°Ρ Π³ΡΡΠΏΠΏΠ° Π²ΠΊΠ»ΡΡΠ°Π»Π° 48 Π΄Π΅ΡΠ΅ΠΉ Π±Π΅Π· ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ Π»Π΅Π³ΠΊΠΈΡ
. ΠΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΎΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈ Π·Π°ΠΏΠΈΡΡ Π΄Π°Π½Π½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π±ΡΠΎΠ½Ρ
ΠΎΡΠΎΠ½ΠΎΠ³ΡΠ°ΡΠΈΠΈ ΠΈ ΡΠΏΠΈΡΠΎΠ³ΡΠ°ΡΠΈΠΈ (ΠΏΠ½Π΅Π²ΠΌΠΎΡΠ°Ρ
ΠΎΠΌΠ΅ΡΡΠΈΠΈ).ΠΠ΅ΡΠΎΠ΄ Π±ΡΠΎΠ½Ρ
ΠΎΡΠΎΠ½ΠΎΠ³ΡΠ°ΡΠΈΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΡΠ°ΡΡΠΈΡΠΈΡΡ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ ΠΎΡΠ΅Π½ΠΊΡ Π»Π΅Π³ΠΊΠΈΡ
, ΠΏΠΎΠ»ΡΡΠ°Π΅ΠΌΡΡ ΡΡΡΠΈΠ½Π½ΡΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΠΎΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΠΎΡΠ½ΠΎ ΠΎΡΠ΅Π½ΠΈΡΡ ΡΡΠΆΠ΅ΡΡΡ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π±ΡΠΎΠ½Ρ
ΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΡΡΠΌΡ
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