156 research outputs found
Lidar observations of atmospheric optical characteristics during Sichuan earthquake
The results of lidar observations of the atmosphere during the Sichuan (China) earthquake of 2008 are presented. It is shown that atmospheric parameters substantially changed during and after the earthquake. The profile of scattering characteristics formed in the lower troposphere differs from the original, which can serve as a predictor for earthquakes
TRADE RELATIONS OF RUSSIA AND AUSTRIA-HUNGARY WITH THE LEVANTINE PROVINCES OF THE OTTOMAN EMPIRE IN THE LATE XIX - EARLY XX CENTURIES
Π ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π½ΠΎΠΉ ΡΡΠ°ΡΡΠ΅ ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°Π΅ΡΡΡ ΡΠ°Π·Π²ΠΈΡΠΈΠ΅ ΡΠΎΡΠ³ΠΎΠ²ΡΡ
ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΉ Π ΠΎΡΡΠΈΠΈ ΠΈ ΠΠ²ΡΡΡΠΎ-ΠΠ΅Π½Π³ΡΠΈΠΈ Π² ΠΊΠΎΠ½ΡΠ΅ XIX - Π½Π°ΡΠ°Π»Π΅ Π₯Π₯ Π²Π². Π½Π° ΡΠ΅ΡΡΠΈΡΠΎΡΠΈΠΈ Π‘ΠΈΡΠΈΠΈ, ΠΠΈΠ²Π°Π½Π° ΠΈ ΠΠ°Π»Π΅ΡΡΠΈΠ½Ρ, Π²Ρ
ΠΎΠ΄ΠΈΠ²ΡΠΈΡ
Π² ΡΠΎΡΡΠ°Π² ΠΡΠΌΠ°Π½ΡΠΊΠΎΠΉ ΠΈΠΌΠΏΠ΅ΡΠΈΠΈ. ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΊΠΎΠΌΠΏΠ°ΡΠ°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π° Π°Π²ΡΠΎΡ ΠΏΡΠΈΡ
ΠΎΠ΄ΠΈΡ ΠΊ Π²ΡΠ²ΠΎΠ΄Ρ, ΡΡΠΎ ΠΠ²ΡΡΡΠΎ-ΠΠ΅Π½Π³ΡΠΈΡ ΡΠΌΠΎΠ³Π»Π° Π΄ΠΎΠ±ΠΈΡΡΡΡ Π±ΠΎΠ»ΡΡΠΈΡ
ΡΡΠΏΠ΅Ρ
ΠΎΠ² Π² ΡΠ°Π·Π²ΠΈΡΠΈΠΈ Π²Π½Π΅ΡΠ½Π΅ΠΉ ΡΠΎΡΠ³ΠΎΠ²Π»ΠΈ Ρ Π΄Π°Π½Π½ΡΠΌ ΡΠ΅Π³ΠΈΠΎΠ½ΠΎΠΌ, Π½Π΅ΠΆΠ΅Π»ΠΈ Π ΠΎΡΡΠΈΡ. ΠΡΠ΅Π΄ΠΏΡΠΈΠ½ΠΈΠΌΠ°ΡΠ΅Π»ΠΈ ΠΈΠ· ΠΈΠΌΠΏΠ΅ΡΠΈΠΈ ΠΠ°Π±ΡΠ±ΡΡΠ³ΠΎΠ² ΡΡΠ°ΡΠ΅Π»ΡΠ½ΠΎ ΠΈΠ·ΡΡΠ°Π»ΠΈ Π·Π°ΠΏΡΠΎΡΡ ΠΏΠΎΡΡΠ΅Π±ΠΈΡΠ΅Π»Π΅ΠΉ Π½Π° ΡΠ΅ΡΡΠΈΡΠΎΡΠΈΠΈ ΠΡΠΌΠ°Π½ΡΠΊΠΎΠΉ ΠΈΠΌΠΏΠ΅ΡΠΈΠΈ ΠΈ ΡΠΏΠ΅ΡΠΈΡΠΈΠΊΡ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ ΡΠΎΡΠ³ΠΎΠ²Π»ΠΈ Π½Π° ΠΠ»ΠΈΠΆΠ½Π΅ΠΌ ΠΠΎΡΡΠΎΠΊΠ΅. Π ΠΎΡΡΠΈΠΉΡΠΊΠΈΠ΅ ΠΏΡΠ΅Π΄ΠΏΡΠΈΠ½ΠΈΠΌΠ°ΡΠ΅Π»ΠΈ Π² ΠΎΡΠ½ΠΎΠ²Π½ΠΎΠΌ ΠΎΡΠΈΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π»ΠΈΡΡ Π½Π° Π΅ΠΌΠΊΠΈΠΉ Π²Π½ΡΡΡΠ΅Π½Π½ΠΈΠΉ ΡΡΠ½ΠΎΠΊ, ΡΠ΄Π΅Π»ΡΡ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΡΠΊΡΠΏΠΎΡΡΠ° Π²ΡΠΎΡΠΎΡΡΠ΅ΠΏΠ΅Π½Π½ΠΎΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅. Π ΠΎΡΡΠΈΡ ΠΈ ΠΠ²ΡΡΡΠΎ-ΠΠ΅Π½Π³ΡΠΈΡ ΡΡΠΎΠ»ΠΊΠ½ΡΠ»ΠΈΡΡ Ρ ΡΡΠ΄ΠΎΠΌ ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΡ
ΠΏΡΠΎΠ±Π»Π΅ΠΌ ΠΏΡΠΈ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ Π²Π½Π΅ΡΠ½Π΅ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ Π½Π° ΡΠ΅ΡΡΠΈΡΠΎΡΠΈΠΈ Π‘ΠΈΡΠΈΠΈ, ΠΠΈΠ²Π°Π½Π° ΠΈ ΠΠ°Π»Π΅ΡΡΠΈΠ½Ρ. ΠΡΠΎΠΌΠ΅ ΠΊΠΎΠ½ΠΊΡΡΠ΅Π½ΡΠΈΠΈ Π΄ΡΡΠ³ΠΈΡ
Π΅Π²ΡΠΎΠΏΠ΅ΠΉΡΠΊΠΈΡ
Π³ΠΎΡΡΠ΄Π°ΡΡΡΠ² ΠΈ Π‘Π¨Π, ΠΈΠΌ ΠΏΡΠΈΡΠ»ΠΎΡΡ ΡΡΠΎΠ»ΠΊΠ½ΡΡΡΡΡ Ρ Π½ΠΈΠ·ΠΊΠΈΠΌ ΡΡΠΎΠ²Π½Π΅ΠΌ Π΄ΠΎΡ
ΠΎΠ΄ΠΎΠ² ΠΌΠ΅ΡΡΠ½ΠΎΠ³ΠΎ Π½Π°ΡΠ΅Π»Π΅Π½ΠΈΡ, ΡΡΠΎ ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ ΠΎΠ³ΡΠ°Π½ΠΈΡΠΈΠ²Π°Π»ΠΎ Π΅Π³ΠΎ ΠΏΠΎΠΊΡΠΏΠ°ΡΠ΅Π»ΡΠ½ΡΡ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΡ ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΏΡΠΈΠΎΠ±ΡΠ΅ΡΠ°ΡΡ Π²ΡΡΠΎΠΊΠΎΠΊΠ°ΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠ΅ ΠΈΠΌΠΏΠΎΡΡΠ½ΡΠ΅ ΡΠΎΠ²Π°ΡΡ
Mesofauna influence on hamification process of vegetable oddments with partticipation microarthropod
Relevance of the studied problem is caused by the fact that stability of natural ecosystems strongly depends on functioning of their destructive block which closes a biological circulation. The organisms that ensure functioning of the destructive block are very different and numerous. All of them partly supplement, partly duplicate functions of each other that is an important factor of reliability of this ecosystem block. Shallow arthropods are important regulators of fossils mineralization and immobilizations of various biogens. Experiments demonstrate that if there are microarthropods, humification processes amplify and the optical density of humic acids raises. The aim of the article is to show degree and depth of change of mineralization and humification processes at the interaction of microarthropods and some mesofauna representatives in the processes of transformation of organic substance of vegetable oddments on the basis of experimental research. The most popular method to a research of this problem is the creation of laboratory microecosystems which have a clear boundary, which are easily reproduced and convenient for experimenting with subsequent instrumental determination of quantitative and qualitative humification parameters. In the course of experimental work it is revealed that the activity of soil-forming invertebrates results in strengthening humification processes. Humification rates, transformation depth of organic substance directly depend on cenotic organization of destructors. It is obvious that, the more complete the composition of biodegradative agents, the more intensive the decomposition process, the stronger the humification processes prevail over mineralization, the higher their maturity degree. All above-mentioned has a huge value to preserve a long-term fertility and high agronomical soil value, both in agrophitocenosis, and in natural biogeocenosis. Β© 2016 Simono, Svetkina and Kryuchkov
Remote atomic clock synchronization via satellites and optical fibers
In the global network of institutions engaged with the realization of
International Atomic Time (TAI), atomic clocks and time scales are compared by
means of the Global Positioning System (GPS) and by employing telecommunication
satellites for two-way satellite time and frequency transfer (TWSTFT). The
frequencies of the state-of-the-art primary caesium fountain clocks can be
compared at the level of 10e-15 (relative, 1 day averaging) and time scales can
be synchronized with an uncertainty of one nanosecond. Future improvements of
worldwide clock comparisons will require also an improvement of the local
signal distribution systems. For example, the future ACES (atomic clock
ensemble in space) mission shall demonstrate remote time scale comparisons at
the uncertainty level of 100 ps. To ensure that the ACES ground instrument will
be synchronized to the local time scale at PTB without a significant
uncertainty contribution, we have developed a means for calibrated clock
comparisons through optical fibers. An uncertainty below 50 ps over a distance
of 2 km has been demonstrated on the campus of PTB. This technology is thus in
general a promising candidate for synchronization of enhanced time transfer
equipment with the local realizations of UTC . Based on these experiments we
estimate the uncertainty level for calibrated time transfer through optical
fibers over longer distances. These findings are compared with the current
status and developments of satellite based time transfer systems, with a focus
on the calibration techniques for operational systems
Studying the compactibility of the VT22 high-strength alloy powder obtained by the PREP method
Compression curves are plotted for VT22 high-strength alloy powder under conditions of uniaxial compression at room temperature. The density of the compacted briquette at the loading and unloading stages is determined. It is demonstrated that strong interparticle bonds are formed in the area of the action of shear deformation. The results are supposed to be used to identify the flow model of the material studied and to perform the subsequent numerical modeling of the compaction process. Β© 2017 Author(s)
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