نتایج جستجو برای: dusty day

تعداد نتایج: 343740  

2000
M. Umemura

We consider the radiation-hydrodynamical formation of a dusty wall in the circumnuclear regions of the Circinus Seyfert 2 galaxy. We focus on the radiative flux force due to the circumnuclear starburst, the nuclear starburst and the active galactic nucleus (AGN), and analyze the equilibrium configuration and stability of the dusty gas in the circumnuclear regions. The mass distributions used to...

2004
Chia-Ling Chan Ying-Ju Lai Wei-Yen Woon Hong-Yu Chu

The dusty plasma liquid formed by micro-meter sized particles negatively charged and suspended in a low pressure discharge background is a good candidate to study the generic spatio-temporal dynamical behaviors at the kinetic level through direct optical video-microscopy, because of the sub-mm interparticle spacing and the slow time scale. In this paper, starting from the basic picture of the a...

2008
N O Renno

Dusty phenomena such as regular wind-blown dust, dust storms, and dust devils are the most important, currently active, geological processes on Mars. Electric fields larger than 100 kV/m have been measured in terrestrial dusty phenomena. Theoretical calculations predict that, close to the surface, the bulk electric fields in martian dusty phenomena reach the breakdown value of the isolating pro...

2009
Edward Thomas

In dc glow discharge dusty plasmas, the formation of dust acoustic waves is a commonly observed phenomenon. Experiments in the dusty plasma experiment device produce naturally occurring dust acoustic waves with frequencies f N 5 to 25 Hz and phase velocities of Vph N 0.5 to 10 cm/s. Through the use of particle image velocimetry techniques, particle motion in the vicinity of the wavefronts is id...

2005
C. Wolf M. E. Gray

We report the discovery of a rich component of dusty star-forming galaxies contaminating the red-sequence in the supercluster system comprising Abell 901a, 901b and A902 at redshift ∼ 0.17. These galaxies do not fit into the colour-density relation, because their preferred habitat is different from that of regular red-sequence galaxies, which are typically dust-poor, old and passively evolving....

2014
Dilip Tamboli Sandeep B Patil

The Biometric is the study of physiological or behavioral characteristics used for the identification of a person. These characteristics of a person include the features like fingerprint, face; hand geometry, voice and iris are known as biometrics. Typical physiological features measured include individual’s fingerprints, retina, face, iris and hand. Typical behavioral features that can be meas...

2006
Praveen Krishnamurthy Roger D. Chamberlain Ron K. Cytron Jason Fritts

Silent stores, i.e., stores to memory that write the same value as already stored in that memory location, have been observed to occur frequently. These stores not only create redundant memory transactions, but in a multiprocessor environment result in redundant communication messages. In this paper, we quantify the frequency of such silent stores, in particular temporally silent stores, in typ...

2003
Natalie M. Mahowald Chao Luo

[1] Atmospheric desert dust is potentially highly sensitive to changes in climate, carbon dioxide and human land use. In this study we use 6 different scenarios of the processes responsible for changes in source areas and explore changes in desert dust loading in pre-industrial and future climates, although all the scenario results are likely to be sensitive to the climate model simulations use...

جنیدی جعفری, احمد, عمارلوئی, علی, مظلومی, سجاد, پاکزاد, ایرج,

Background and purpose: Dust storms can transfer particulate pollutants to long distances, and in some cases, to thousands of kilometers from their source. These dust storms can carry very large volumes of bioaerosols such as fungal species which are the causes of respiratory infections and allergies. The aim of this study was to determine the impact of dust storms on transmission of fungal ...

Journal: :The Astrophysical Journal 2010

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