In the atmosphere, they are mainly related to particle phase but also they can be present in a liquid phase due to the dissolution of aerosol particles in the water drops. Whatever their origin, both natural and anthropogenic, most elements, and in particular heavy metals, are dangerous ...
In the atmosphere, they are mainly related to particle phase but also they can be present in a liquid phase due to the dissolution of aerosol particles in the water drops. Whatever their origin, both natural and anthropogenic, most elements, and in particular heavy metals, are dangerous ...
Context. The chemically peculiar stars of the upper main sequence represent a natural laboratory for the study of rare-earth elements (REE). Aims. We want to check the reliability of the energy levels and atomic line parameters for the second REE ions currently available in the literature, and...
Studies on the morphology of the solar upper atmosphere began over three decades ago. Early models assumed that the temperature structure of the solar uppe... U Feldman,KG Widing,HP Warren - 《Astrophysical Journal》 被引量: 113发表: 1999年 Origin of elements in the solar system : implication...
High-resolution spectra are used to investigate the abundance of rare-earth elements (REE) in the atmosphere of the magnetic, rapidly oscillating, chemically peculiar (roAp) star HD134214. The neodymium abundance is investigated using the lines of neodymium in the first and second ionization states...
(the 6-m BTA telescope, the Special Astrophysical Observatory of the Russian Academy of Sciences), we have determined the abundances of 26 elements, from lithium to europium, in the atmosphere of the active red giant PZ Mon, which belongs to the class of RS CVn variable stars, by the ...
summer and autumn.In rainy season the latent heat transfer plays a dominant role in the heat transfer between the atmosphere and the land surface,while the sensible heat transfer is secondary.The result in dry season is just the reverse of rainy season,the sensible heat transfer takes the lead...
Although the levels of atmospheric elements in Glasgow vary considerably throughout the year, the mean values are in general agreement with those recorded for similar environments throughout the world. Periods of fog and calm tend to increase levels, while rain clears the atmosphere. This has obvio...
Those fine aerosols-associated trace elements are more harmful, as fine aerosols can penetrate deeper in human respiratory system than coarse particles (Xing et al., 2016). The abundances of trace elements in the atmosphere are mostly affected by their residence time, meteorological conditions, ...
Abundances of carbon, nitrogen, oxygen, and other elements in the atmosphere of the giant 30 LMicelestial mechanicsWe have studied the star 30 LMi using high-dispersion CCD spectra and photographic observations. We estimate the star's effective temperature T eff =7210 K, gravity log g =3.34, ...