52 research outputs found
Conditions for the formation of a non-autonomous phase at the structural deformation of complex vanadium oxides
Received: 02.03.2018. Accepted: 10.04.2018. Published: 10.05.2018.A new previously unknown effect of a reversible transition from a singlephase system to a heterophase system containing a non-autonomous phase was observed during thermal and chemical deformations of the Zn2β2xCd2xV2O7 structure.The role of local symmetry in the formation of the non-autonomous phase is shown on the basis of X-ray diffraction studies in situ and a comparative crystal-chemical analysis of the structural deformations of isoform monoclinic solid solutions of zinc and copper pyrovanadates with zero volumetric thermal expansion.The work was supported by UB RAS (project 18-10-3-32)
Spatiotemporal dynamics of the wind velocity variance from the data of acoustic sounding of the atmospheric boundary layer
In the report spatiotemporal dynamics of the variance of three components of the wind velocity in the atmospheric boundary layer retrieved from measurements with a Doppler mini-sodar is analyzed. During measurements, the variances of the x- and y-components of the wind velocity were in the range 0.001 β€ Dx, Dy β€ 10 m2/s2; for the z-component 0.001 β€ Dz β€ 1.2 m2/s2. Their increase in the morning hours (at about 11:00, local time) and in the evening hours (from 18:00 till 22:00, local time) was noticed. This was explained by warming and subsequent cooling of the Earth surface accompanied by strengthening of motion of air masses. At night (from 00:00 till 5:00, local time), 0.01 β€ Dz β€ 0.56 m2/s2, which is in good agreement with the literature data. Β© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only
THERAPEUTIC EXERCISE FOR PATIENTS WITH ANKYLOSING SPONDYLITIS: RECOMMENDATIONS AND REALITY
Objective. To study how the patients with ankylosing spondylitis (AS) follow recommendations for performing physi- cal exercises. Material and methods. To clarify the compliance of patients with AC to physical exercise, a special questionnaire was designed. The Exercise Benefits/Barriers Scale (EBBS) was used to assess the perception of physical exercises. The study included 79 patients (the mean age of 34.5 Β± 9.4 years) with AS (diagnosed according to the New York criteria) who have been treated at the clinic of V.A. Nasonova Research Institute of Rheumatology of the Russian Academy of Medical Sciences. Results. Of the 79 patients included in the study, 77.2% were doing therapeutic exercises; 41.0% of patients were doing them every day. 41.0% of the patients have received sets of exercises from the attending doctor, 41.0 % from the Internet, and 18.0% from other sources (brochures for patients or courses for patients with AS). The average total EEBS score was 114.2 Β± 17.8 points; the benefits score was 87.1 Β± 12.8; and the barriers score was 27.1 Β± 5.0. The most frequent responses to question about the benefits of physical exercises were as follows: Β«They reduce the feeling of stress and tensionΒ» (90.6%) and Β«They increase the muscle strengthΒ» (93.7%). Β«I am tired physically from doing exercisesΒ» (96.6%) was the most common barrier to execution of physical exercises. Conclusion. Despite the positive perception of physical exercises, only 41.0% of the patients with AS have done them every day. The lack of information about exercises recommended for AS patients, the frequency of their use, the effect on the disease activity and functionality significantly limits the use of exercises by patients with AS. It remains unclear exactly, which sets of exercises are most effective and what regularity of exercises should be used to prevent impair- ment of the functions of the spine and joints
Sol-gel synthesis and crystal chemical properties of the pigment Zn1.9Cu0.1SiO4
Received: 06.12.2018. Accepted: 21.12.2018. Published: 31.12.2018.The pigment Zn1.9Cu0.1SiO4 was obtained by the method of sol-gel synthesis. The crystallization temperature was set at 776 Β°C, ΞH β β16.3 kJ / mol. Thermal expansion of the individual Zn2SiO4 and Zn1.9Cu0.1SiO4 solid solutions was studied by in situ high-temperature X-ray diffraction. It is shown that the substitution of Zn2+ β Cu2+ does not lead to significant changes in the lattice parameters; in the range from room temperature to 800 Β°C the structure expands monotonically when heated. The coefficients of volumetric thermal expansion for Zn2SiO4 and Zn1.9Cu0.1SiO4 are Ξ±V = 8.05 Β· 10β6 and 8.81 Β· 10β6 1 / K, respectively. The colorimetric coordinates in the RGB system are 71.8 % red, 72.9 % green and 79.6 % blue, which corresponds to the gray-blue pigment.The work was supported by UB RAS (project 18β10β3β32)
ΠΠ½ΠΊΠΈΠ»ΠΎΠ·ΠΈΡΡΡΡΠΈΠΉ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΈΡ Π² ΡΠΎΡΠ΅ΡΠ°Π½ΠΈΠΈ Ρ ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌ Π°ΡΡΠΎΠ²ΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΠΏΠΎΡΠ°ΠΆΠ΅Π½ΠΈΠ΅ΠΌ ΠΊΠΎΠΆΠΈ (ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠ΅ ΠΈ ΠΎΠ±Π·ΠΎΡ Π»ΠΈΡΠ΅ΡΠ°ΡΡΡΡ)
We present a clinical case of combination of axial spondyloarthritis (axSpA) and chronic recurrent skin lesions in the form of acne conglobata, hidradenitis suppurativa (HS) with fistulous tracts formation. During the diagnostic search, the following diseases were considered: HS, SAPHO syndrome (synovitis, acne, pustulosis, hyperostosis, osteitis), PASS syndrome (pyoderma gangrenosum, acne, ankylosing spondylitis, HS). The choice of therapy in this patient and the possibility of using biologic disease-modifying antirheumatic drugs for axSpa and concomitant autoinflammatory skin process are discussed.ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠ΅, Π² ΠΊΠΎΡΠΎΡΠΎΠΌ ΠΈΠΌΠ΅Π»ΠΎΡΡ ΡΠΎΡΠ΅ΡΠ°Π½ΠΈΠ΅ Π°ΠΊΡΠΈΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΎΠ°ΡΡΡΠΈΡΠ° (Π°ΠΊΡΠ‘ΠΏΠ) ΠΈ Ρ
ΡΠΎΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ΅ΡΠΈΠ΄ΠΈΠ²ΠΈΡΡΡΡΠ΅Π³ΠΎ ΠΏΠΎΡΠ°ΠΆΠ΅Π½ΠΈΡ ΠΊΠΎΠΆΠΈ Π² Π²ΠΈΠ΄Π΅ ΠΊΠΎΠ½Π³Π»ΠΎΠ±Π°ΡΠ½ΡΡ
Π°ΠΊΠ½Π΅, Π³Π½ΠΎΠΉΠ½ΠΎΠ³ΠΎ Π³ΠΈΠ΄ΡΠ°Π΄Π΅Π½ΠΈΡΠ° (ΠΠ) Ρ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠ²ΠΈΡΠ΅Π²ΡΡ
Ρ
ΠΎΠ΄ΠΎΠ². Π Ρ
ΠΎΠ΄Π΅ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠΈΡΠΊΠ° ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°Π»ΠΈΡΡ ΡΠ»Π΅Π΄ΡΡΡΠΈΠ΅ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ: ΠΠ, ΡΠΈΠ½Π΄ΡΠΎΠΌ SAPHO (ΡΠΈΠ½ΠΎΠ²ΠΈΡ, Π°ΠΊΠ½Π΅, ΠΏΡΡΡΡΠ»Π΅Π·, Π³ΠΈΠΏΠ΅ΡΠΎΡΡΠΎΠ·, ΠΎΡΡΠ΅ΠΈΡ), PASS-ΡΠΈΠ½Π΄ΡΠΎΠΌ (Π³Π°Π½Π³ΡΠ΅Π½ΠΎΠ·Π½Π°Ρ ΠΏΠΈΠΎΠ΄Π΅ΡΠΌΠΈΡ, Π°ΠΊΠ½Π΅, Π°Π½ΠΊΠΈΠ»ΠΎΠ·ΠΈΡΡΡΡΠΈΠΉ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΈΡ, ΠΠ). ΠΠ±ΡΡΠΆΠ΄Π°ΡΡΡΡ Π²ΡΠ±ΠΎΡ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ Ρ Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ° ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π³Π΅Π½Π½ΠΎ-ΠΈΠ½ΠΆΠ΅Π½Π΅ΡΠ½ΡΡ
Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ² ΠΏΡΠΈ Π°ΠΊΡΠ‘ΠΏΠ° ΠΈ ΡΠΎΠΏΡΡΡΡΠ²ΡΡΡΠ΅ΠΌ Π°ΡΡΠΎΠ²ΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΌ ΠΊΠΎΠΆΠ½ΠΎΠΌ ΠΏΡΠΎΡΠ΅ΡΡΠ΅
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