منابع مشابه
Red Quasars Not so Dusty
Webster et al (1995) claimed that up to 80% of QSOs may be obscured by dust. They inferred the presence of this dust from the remarkably broad range of B?K optical-infrared colours of a sample of at-spectrum PKS radio QSOs. If such dust is typical of QSOs, it will have rendered invisible most of those which would otherwise been have detected by optical surveys. We used the William Herschel Tele...
متن کاملMilky Way
7 Globular clusters and Population II stars are fossil remnants of the first major epoch of star formation in the Milky Way. SIM Lite will determine precise distances to selected Pop II objects to define a reliable distance scale, and establish reliable absolute and relative ages. Those ages set a minimum age for the Universe and map the early formation history of the Milky Way. The resultant a...
متن کاملDusty Plasma Liquids
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...
متن کاملA less dusty future?
[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...
متن کاملScrotal lymphocele ( milky hydrocele )
We report a case of scrotal lymphocele diagnosed by fine needle aspiration cytology in a 22-year old male, who, came to the hospital with complaints of pain and progressive enlargement of right side scrotum and clinico-radiologically diagnosed as hydrocele. No any history of abdominal or inguinal surgical procedures or renal transplant had been found and probable etiology of filarial origin was...
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ژورنال
عنوان ژورنال: Science
سال: 2010
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.330.6000.13-b