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1.
Experimental material was obtained supporting a hypothesis on the interaction between p- and o-diphenol toxicity and their oxidation. It is shown that quinones – the products of pyrocatechol and hydroquinone oxidation – possess increased toxicity towards luminous bacteria cells.  相似文献   
2.
Spectroscopic observations of 71 objects have completed the follow-up spectroscopy of galaxies in two adjacent fields of the Second Byurakan Survey with central coordinates = 11h30m, = +59° and = 12h00m, = +59°. The spectra were obtained on the 2.6-m telescope of the Byurakan Astrophysical Observatory and the 6-m telescope of the Special Astrophysical Observatory. The redshifts and absolute stellar magnitudes of all the galaxies have been determined. The objects have been classified using an adapted scheme.  相似文献   
3.
A method is proposed for constructing a map of the electron density distribution in the galactic plane. Data on the dispersion measures DM of more than 1500 pulsars and their distances, found by an independent method, are used. The independent distances of the pulsars are estimated using an empirical relation of the form LP α β W δ between the radio luminosity L of the pulsars and their periods P, the rate of change . of their periods, and the half width W of their pulses. A map of the electron density distribution in the galactic plane within a ±400 pc layer is provided. __________ Translated from Astrofizika, Vol. 49, No. 2, pp. 277–287 (May 2006).  相似文献   
4.
Data on the action of mono- and polyatomic phenol mixtures on hydrobionts are discussed. Luminescent bacteria, Daphnia, algae zoospores, higher aquatic plants–Elodea and duckweed – were used as test objects. It is established that the toxicity of a paired mixture of mono- and polyatomic phenols is lower than the toxicity of their components.  相似文献   
5.
Experimental data are presented favouring a hypothesis of the elimination of quinones formed in the presence of hydroquinone oxidation in a mixture with other phenols. Results obtained on decreases of the quinone quantities in the mixture correlate with the data on a decrease of their toxicity for luminous bacteria.  相似文献   
6.
Saksonov  M. N.  Balayan  A. E.  Stomm  D. I. 《Water Resources》2001,28(6):688-690
Luminescent spectroscopy techniques are used to study the accumulation of oil and diesel fuel in fatty inclusions in the organisms of Epishura baicalensis Sars during their incubation in water containing oil products. The role of nutrition in the accumulation and elimination of oil products is studied. It is shown that the intense luminescence of fatty inclusions in the Copepoda organisms can be used for bioassaying oil pollution.  相似文献   
7.
The results of observations of 49 objects from the second Byurakan spectroscopic sky survey are given; they complete the recent spectroscopy of galactic samples in the fields centered on the coordinates = 09h47m, = +51° and = 09h50m, = +55°. The spectra were obtained on the 2.6-m telescope of the Byurakan Astrophysical Observatory, National Academy of Sciences of the Republic of Armenia, and the 6-m telescope of the Special Astrophysical Observatory, Russian Academy of Sciences, during 1998-2000. Redshifts and absolute stellar magnitudes were determined for all the galaxies.  相似文献   
8.
The results of spectroscopic observations of 25 objects of the Second Byurakan Spectroscopic Sky Survey in a field with central coordinates a = 08h00m, δ = +59° are given. The spectra were obtained on the 2.6- m telescope of the Byurakan Astrophysical Observatory, National Academy of Sciences of the Republic of Armenia, and the 6- m telescope of the Special Astrophysical Observatory, Russian Academy of Sciences, in 1997– 1998 with a spectral resolution of from 5 to 15Å. The redshifts and absolute stellar magnitudes of all the galaxies were determined and they were classified. A histogram of the redshift distribution of the complete sample of galaxies in this field of the survey is given.  相似文献   
9.
The methods of panoramic (3D) spectroscopy are used by us in a detailed study of galaxies with ongoing star formation chosen from among objects in seven selected fields of the Second Byurakan Survey (SBS). This article deals with the irregular galaxy SBS 1202 + 583, which our classification scheme identifies as being in a continuous phase of star formation. Observations were made with the panoramic spectrographs MPFS at the 6-m telescope of the Special Astrophysical Observatory (SAO) of the Russian Academy of Sciences and VAGR at the 2.6-m telescope of the Byurakan Astrophysical Observatory (BAO) in Armenia. The data are used to construct maps of the radiative fluxes in the continuum and various emission lines. Special attention is devoted to analyzing the emission in the Hα hydrogen recombination line and in the forbidden low-ionization doublets of nitrogen [NII] λλ6548, 6583 and sulfur [SII] λλ6716, 6731, and the ratios of the intensities of the forbidden lines to Hα. The observable characteristics (size, Hα fluxes, etc.) of nine HII regions are studied. The estimated current rates of star formation in the individual HII regions based on the Hα fluxes lie within the range of 0.3-1.2 M /year. The dependence of the ratio of the intensities of the emission in these above mentioned forbidden doublets on the rate of star formation in the HII regions is found.  相似文献   
10.
S. K. Balayan 《Astrophysics》1997,40(3):211-221
The results of the spectra/classification of 310 stars and objects having a continuous spectrum, selected in the course of the Second Byurakan Spectral Sky Survey, are given. Slit spectra were used in the work, which were obtained from 1978 to 1994, mainly on the 6-m telescope of the Special Astrophysical Observatory, Russian Academy of Sciences; some of the spectra were obtained on the 2.6-m telescope of the Byurakan Astrophysical Observatory, National Academy of Sciences of Armenia, and the 4.5-m Multiple-Mirror Telescope (USA), with 5–15 Å resolution. The sample contains objects in the range of stellar magnitudes 11.0 ≤ m(pg) ≤ 19.5. We found 93 DA, 2 DO, 12 DB, and 1 DC white dwarfs, 83 sdB and 20 sdO subdwarfs, 34 NHB variables, 2 cataclysmic variables, 48 stars of late spectral types, 8 spectroscopic binary systems, and 7 objects having a continuous spectrum. Several recordings are given for each of these spectral types.  相似文献   
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