Iran is one of the world's arid regions and exposed to dust particles in the air. This is important in spatial and temporal terms as well as the affects human health. In this paper a day when due to the amount of dust particles visibility reduces to 5,000 m is considered the dusty day. In the spatial and temporal analysis of dusty days 38 synoptic stations were studied. In order to conduct data...

Iran is one of the world's arid regions and exposed to dust particles in the air. This is important in spatial and temporal terms as well as the affects human health. In this paper a day when due to the amount of dust particles visibility reduces to 5,000 m is considered the dusty day. In the spatial and temporal analysis of dusty days 38 synoptic stations were studied. In order to conduct data...

We estimate the star-formation rates and the stellar masses of the Extremely Red Objects (EROs) detected in a ≈ 180 arcmin Ks-band survey (Ks ≈ 20mag). This sample is complemented by sensitive 1.4GHz radio observations (12μJy 1σ rms) and multiwaveband photometric data (UBV RIJ) as part of the Phoenix Deep Survey. For bright K < 19.5mag EROs in this sample (I − K > 4mag; total of 177) we use pho...

Abstarct A kinetic equation for dust particles with a new kinetic variable-the mass of grains-is suggested for the description of processes with changing mass in dusty plasmas and neutral systems.

Submillimeter and near-infrared images of cool dusty debris disks and rings suggest the existence of unseen planets. At dusty but nonimaged stars, semimajor axes of associated planets can be estimated from the dust temperature. For some young stars these semimajor axes are greater than 100 as seen from Earth. Such stars are excellent targets for sensitive near-infrared imaging searches for warm...

BACKGROUND The present study investigated the effect of the Middle East dust storm episodes on the concentration and composition of PM10 during April to September 2013 in Sanandaj City, western Iran. METHODS Sampling was once every six days, and on dusty days using an Omni air sampler. The PM10 sample was collected on polytetrafluoroethylene filters. Average of 24 h values of PM10 mass concen...

The basic features of dusty plasmas, particularly basic characteristics of dust in a plasma, and typical dusty plasma parameters for different space and laboratory plasma conditions, are presented. The complexity and the diversity of the field of dusty plasma physics are briefly discussed. Theoretical and experimental discoveries of linear and nonlinear features of waves, particularly dust-ion-...