Autor: Petrov, D.S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Assessing the Environmental Condition of Minor Rivers in Urban Areas
Autorzy:: Kuznetsov, V. S.
Petrov, D.S.
Powiązania:: https://bibliotekanauki.pl/articles/124132.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sediment pollution
minor rivers
oil product pollution
environmental monitoring
heavy metal pollution
Opis:: This article is devoted to the study of water and sediment pollution in the channel of the Neva delta. Spectrophotometry was used to determine the concentration of pollutants in water. In the chemical analysis of the precipitate, atomic absorption spectroscopy and infrared spectroscopy were used. Analysis of the hydrochemical composition and sediment of the Smolenka River showed high concentrations of heavy metals and petroleum products. At the same time, the hydrochemical composition of the Smolenka River is highly unstable, but the concentration of oil products and lead in the sediments indicates the presence of local pollution sources. Based on our findings, we are guided by the restoration of the aquatic environment.
Źródło:: Journal of Ecological Engineering; 2017, 18, 6; 110-114
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Population Loss in Closed Optical Transitions οf Rb and Cs Atoms Confined in Micrometric Thin Cells
Autorzy:: Biancalana, V.
Cartaleva, S.
Dancheva, Y.
Gosh, P.
Mariotti, E.
Mitra, S.
Moi, L.
Petrov, N.
Ray, B.
Sarkisyan, D.
Slavov, D.
Powiązania:: https://bibliotekanauki.pl/articles/1791199.pdf
Data publikacji:: 2009-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 32.30.-r
32.70.Jz
Opis:: We present the first experimental observation of narrow dips in the fluorescence profiles of completely closed hyperfine transitions in Rb vapor at high atomic density, which is attributed to the depolarization of the excited state. Moreover, at low atomic density, a narrow peak on the top of the fluorescence profile is demonstrated, centered at the completely closed transition within the $D_{2}$ line of Cs. Experiments are performed in thin (700 μm) alkali cell by single light beam spectroscopy. The cell is filled with Cs containing a small portion of Rb.
Źródło:: Acta Physica Polonica A; 2009, 116, 4; 495-497
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: All-Optical Magnetometer Based on Resonant Excitation of Rubidium Atoms by Frequency Modulated Diode Laser Light
Autorzy:: Cartaleva, S.
Karaulanov, T.
Petrov, N.
Slavov, D.
Vaseva, K.
Yanev, A.
Mijailovic, M.
Grujic, Z.
Jelenkovic, B. M.
Powiązania:: https://bibliotekanauki.pl/articles/2047842.pdf
Data publikacji:: 2007-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.50.Gy
07.55.Ge
Opis:: Magnetic field and its gradient measurements based on coherent population trapping resonances at the D$\text{}_{1}$ line of $\text{}^{87}$Rb are performed by means of coupling two ground-state Zeeman sublevels belonging to different hyperfine levels to a common excited state. Two coherent laser fields with frequency difference of 6.8 GHz are used. They are produced by direct current modulation of a diode laser. The resonance splitting and broadening caused by the applied magnetic field is measured by scanning the laser modulation frequency around the ground-state hyperfine frequency.
Źródło:: Acta Physica Polonica A; 2007, 112, 5; 871-876
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Characterization of dense plasma streams generated by MPC and their interaction with material surfaces
Autorzy:: Makhlaj, V. A.
Chebotarev, V. V.
Chuvilo, A. A.
Garkusha, I. E.
Ladygina, M. S.
Marchenko, A. K.
Petrov, Y. V.
Solyakov, D. G.
Powiązania:: https://bibliotekanauki.pl/articles/147528.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: magneto-plasma compressor (MPC)
gas-discharge plasma
plasma streams
mixture gas
EUV radiation
surface damage
Opis:: Comparative studies of the parameters both pure helium and helium-xenon plasma have been fulfilled in a magneto-plasma compressor (MPC). The current-voltage characteristics of MPC accelerating channel and the maximum plasma velocity of (6-8) x 106 cm/s changed negligibly under local xenon injection to compression zone. Nevertheless, the xenon addition causes a growth of maximal plasma pressure up to of 2.3 MPa, an increase of plasma radiation from the compression zone. The plasma density achieved 1018 cm.
Źródło:: Nukleonika; 2012, 57, 2; 197-200
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

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