5 research outputs found
Investigation the structured material surfaces using the quartz tuning fork based on an atomic force microscopy with controllable q-factor in two modes operation: βintermittent contactβ and βshear-forceβ
We present a combination of an atomic force microscopy with a quartz-crystal tuning fork in ambient conditions. A silicon cantilever tip was attached to one prong of the tuning fork to realize shear-force and intermittent contact mode Fork-AFM operation. By electronically adjusting the quality factor of the probe, called Q-control, it was possible to tune the quality factor Q and correspondingly change the overall scanning time. It was also seen that tuning fork with low quality factors could increase stability with the changed signal and so improve the imaging resolution. Measurements on the different samples were used to demonstrate this technique.Π£ ΡΠΎΠ±ΠΎΡΡ ΠΎΠΏΠΈΡΡΡΡΡΡΡ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΡΡ Π°ΡΠΎΠΌΠ½ΠΎΡΠΈΠ»ΠΎΠ²ΠΎΠ³ΠΎ ΠΌΡΠΊΡΠΎΡΠΊΠΎΠΏΠ° c Π΄Π°ΡΡΠΈΠΊΠΎΠΌ Ρ Π²ΠΈΠ³Π»ΡΠ΄Ρ ΠΊΠ°ΠΌΠ΅ΡΡΠΎΠ½Π° Π½Π° ΠΎΡΠ½ΠΎΠ²Ρ ΠΊΠ²Π°ΡΡΠΎΠ²ΠΎΠ³ΠΎ ΠΊΡΠΈΡΡΠ°Π»Π°. ΠΡΠ΅ΠΌΠ½ΡΡΠ²Π΅ ΠΊΠ°Π½ΡΠΈΠ»Π΅Π²Π΅ΡΠ½Π΅ Π²ΡΡΡΡΡ Π±ΡΠ»ΠΎ Π·Π°ΠΊΡΡΠΏΠ»Π΅Π½ΠΎ Π΄ΠΎ Π·ΡΠ±ΡΡ ΠΊΠ°ΠΌΠ΅ΡΡΠΎΠ½Π° ΡΠ°ΠΊΠΈΠΌ ΡΠΈΠ½ΠΎΠΌ, ΡΠΎ Π΄ΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΡΠ΅Π°Π»ΡΠ·ΡΠ²Π°ΡΠΈ Π΄Π»Ρ ΠΊΠ°ΠΌΠ΅ΡΡΠΎΠ½ΠΎΠ²ΠΎΠ³ΠΎ ΠΠ‘Π Π»Π°ΡΠ΅ΡΠ°Π»ΡΠ½ΠΎ-ΡΠΈΠ»ΠΎΠ²ΠΎΠΉ (shear-force) Ρ Π½Π°ΠΏΡΠ²ΠΊΠΎΠ½ΡΠ°ΠΊΡΠ½ΠΈΠΉ (ΡntermΡttent contact) ΡΠ΅ΠΆΠΈΠΌΠΈ. ΠΠ° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ ΡΠΈΡΡΠ΅ΠΌΠΈ Π΅Π»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π³ΡΠ»ΡΠ²Π°Π½Π½Ρ Π΄ΠΎΠ±ΡΠΎΡΠ½ΠΎΡΡΡ Π·ΠΎΠ½Π΄Π°, ΡΠ°ΠΊ Π½Π°Π·ΠΈΠ²Π°Π½ΠΎΠ³ΠΎ Q-ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ, ΠΌΠΎΠΆΠ»ΠΈΠ²Π΅ Π½Π°ΡΡΡΠΎΡΠ²Π°Π½Π½Ρ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ° Π΄ΠΎΠ±ΡΠΎΡΠ½ΠΎΡΡΡ Q Ρ, Π²ΡΠ΄ΠΏΠΎΠ²ΡΠ΄Π½ΠΎ, Π·ΠΌΡΠ½Π° ΠΏΠΎΠ²Π½ΠΎΠ³ΠΎ ΡΠ°ΡΡ ΡΠΊΠ°Π½ΡΠ²Π°Π½Π½Ρ. ΠΡΠ»ΠΎ ΠΏΠΎΠΌΡΡΠ΅Π½ΠΎ, ΡΠΎ ΡΠ»ΡΡ
ΠΎΠΌ Π·ΠΌΠ΅Π½ΡΠ΅Π½Π½Ρ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ° Π΄ΠΎΠ±ΡΠΎΡΠ½ΠΎΡΡΡ ΠΌΠΎΠΆΠ½Π° Π·Π±ΡΠ»ΡΡΠΈΡΠΈ ΡΡΠ°Π±ΡΠ»ΡΠ½ΡΡΡΡ Π²ΠΈΠΌΡΡΡΠ²Π°Π½ΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Ρ ΠΉ Ρ ΡΠ°ΠΊΠΈΠΉ ΡΠΏΠΎΡΡΠ± ΠΏΠΎΠ»ΡΠΏΡΠΈΡΠΈ ΡΠΎΠ·ΠΏΠΎΠ΄ΡΠ» Π΄Π»Ρ ΡΠΎΡΠΌΠΎΠ²Π°Π½ΠΈΡ
Π·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½Ρ. ΠΠ»Ρ Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠ°ΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°Π»ΠΈΡΡ Π·ΡΠ°Π·ΠΊΠΈ ΡΡΠ·Π½ΠΈΡ
ΡΠΈΠΏΡΠ².Π ΡΠ°Π±ΠΎΡΠ΅ ΠΎΠΏΠΈΡΡΠ²Π°Π΅ΡΡΡ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΡ Π°ΡΠΎΠΌΠ½ΠΎΡΠΈΠ»ΠΎΠ²ΠΎΠ³ΠΎ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠ° c Π΄Π°ΡΡΠΈΠΊΠΎΠΌ Π² Π²ΠΈΠ΄Π΅ ΠΊΠ°ΠΌΠ΅ΡΡΠΎΠ½Π° Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΊΠ²Π°ΡΡΠ΅Π²ΠΎΠ³ΠΎ ΠΊΡΠΈΡΡΠ°Π»Π»Π°. ΠΡΠ΅ΠΌΠ½ΠΈΠ΅Π²ΠΎΠ΅ ΠΊΠ°Π½ΡΠΈΠ»Π΅Π²Π΅ΡΠ½ΠΎΠ΅ ΠΎΡΡΡΠΈΠ΅ Π±ΡΠ»ΠΎ Π·Π°ΠΊΡΠ΅ΠΏΠ»Π΅Π½ΠΎ ΠΊ Π·ΡΠ±ΡΡ ΠΊΠ°ΠΌΠ΅ΡΡΠΎΠ½Π° ΡΠ°ΠΊΠΈΠΌ ΠΎΠ±ΡΠ°Π·ΠΎΠΌ, ΡΡΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΡΠ΅Π°Π»ΠΈΠ·ΠΎΠ²Π°ΡΡ Π΄Π»Ρ ΠΊΠ°ΠΌΠ΅ΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΠ‘Π Π»Π°ΡΠ΅ΡΠ°Π»ΡΠ½ΠΎ-ΡΠΈΠ»ΠΎΠ²ΠΎΠΉ (shear-force) ΠΈ ΠΏΠΎΠ»ΡΠΊΠΎΠ½ΡΠ°ΠΊΡΠ½ΡΠΉ (intermittent contact) ΡΠ΅ΠΆΠΈΠΌΡ. Π‘ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅Π³ΡΠ»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π΄ΠΎΠ±ΡΠΎΡΠ½ΠΎΡΡΠΈ Π·ΠΎΠ½Π΄Π°, ΡΠ°ΠΊ Π½Π°Π·ΡΠ²Π°Π΅ΠΌΠΎΠ³ΠΎ Q-ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ, Π²ΠΎΠ·ΠΌΠΎΠΆΠ½Π° Π½Π°ΡΡΡΠΎΠΉΠΊΠ° ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ° Π΄ΠΎΠ±ΡΠΎΡΠ½ΠΎΡΡΠΈ Q ΠΈ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΡΠΊΠ°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ. ΠΡΠ»ΠΎ Π·Π°ΠΌΠ΅ΡΠ΅Π½ΠΎ, ΡΡΠΎ ΠΏΡΡΠ΅ΠΌ ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΡ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ° Π΄ΠΎΠ±ΡΠΎΡΠ½ΠΎΡΡΠΈ ΠΌΠΎΠΆΠ½ΠΎ ΡΠ²Π΅Π»ΠΈΡΠΈΡΡ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΡ ΠΈΠ·ΠΌΠ΅ΡΡΠ΅ΠΌΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Π° ΠΈ ΡΠ°ΠΊΠΈΠΌ ΠΎΠ±ΡΠ°Π·ΠΎΠΌ ΡΠ»ΡΡΡΠΈΡΡ ΡΠ°Π·ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ Π΄Π»Ρ ΡΠΎΡΠΌΠΈΡΡΠ΅ΠΌΡΡ
ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΉ. ΠΠ»Ρ Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠ°ΡΠΈΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈΡΡ ΠΎΠ±ΡΠ°Π·ΡΡ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠΈΠΏΠΎΠ²
INFLAMMATION MARKERS ANALYSIS AMONG CHILDREN, SUFFERING FROM ACUTE BRONCHITIS AGAINST FENSPIRIDE BASED TREATMENT
The authors stud the clinical efficiency of fenspiride (Erespal) among children (n = 46), suffering from acute bronchitis. It was shown that fenspiride reduced the cough duration and conduced to faster improvement of the patients' health. Besides, fenspiride application was accompanied by the reduction of the anti-inflammatory cytokines both in the blood serum and condensate of expired air.Key words: bronchitis, fenspiride, cytokines, condensate of expired air, children
Financial risks of Russian oil companies in conditions of volatility of global oil prices
The development of scientific approaches to assessing and diagnosing the financial risks of oil industry in the Russian Federation becomes a high priority task in conditions of high level of volatility in oil prices in the world energy market and preservation of sanctions regime. The article shows the main threats to financial stability of oil companies in Russia. Using cluster analysis, a system of indicators is proposed that determines the level of financial risk of oil companies in Russia. Based on the method of expert assessments and fuzzy sets, the classification of financial risk levels of oil industry is proposed. The integrated financial risk level of oil industry was calculated and scenarios of its development for 2018-2020 were forecast by means of regression modeling. The system of measures to improve the stability of oil companies and prevent functional financial risks is argued. The practical implementation of research results will be the basis for timely diagnosis of financial risks and qualitative development of preventive measures to neutralize them in the oil industry of Russia. Β© 2019, Econjournals. All rights reserved