منابع مشابه
Microsoft Word - Jason Dawes
Roller compaction is a dry granulation technique used in the pharmaceutical industry, in which a powder formulation is compressed into a ‘ribbon’ compact between two counter rotating rolls. The ribbon is subsequently milled into granules of a desired size range. Whilst simple in principle, successful control of a roller compaction process is often difficult as it is multivariate in design. Furt...
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The majority of astrophysics involves the study of spiral galaxies, and stars and planets within them, but how spiral arms in galaxies form and evolve is still a fundamental problem. Major progress in this field was made primarily in the 1960s, and early 1970s, but since then there has been no comprehensive update on the state of the field. In this review, we discuss the progress in theory, and...
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The chemical evolution of the Universe is governed by the chemical yields from stars, which in turn is determined primarily by the initial stellar mass. Even stars as low as 0.9M⊙ can, at low metallicity, contribute to the chemical evolution of elements. Stars less massive than about 10M⊙ experience recurrent mixing events that can significantly change the surface composition of the envelope, w...
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The last few years has seen a dramatic increase in the number of exoplanets known and in the range of methods for characterising their atmospheric properties. At the same time, new discoveries of increasingly cooler brown dwarfs have pushed down their temperature range which now extends down to Y-dwarfs of <300 K. Modelling of these atmospheres has required the development of new techniques to ...
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ژورنال
عنوان ژورنال: Sydney Journal
سال: 2010
ISSN: 1835-0151
DOI: 10.5130/sj.v2i2.1501