منابع مشابه
The trion : two electrons plus one hole versus one electron plus one exciton
We first show that, for problems dealing with trions, it is totally hopeless to use the standard many-body description in terms of electrons and holes and its associated Feynman diagrams. We then show how, by using the description of a trion as an electron interacting with an exciton, we can obtain the trion absorption through far simpler diagrams, written with electrons and excitons. These dia...
متن کاملMeiotic Spindle Self-Organization: One Plus One Equals Only One
Like other cellular organelles, the bipolar spindle is a structure of well-defined size and shape. Now, spindle fusion experiments using micro-manipulation have allowed current models for spindle morphogenesis and size control to be tested.
متن کاملCollective dynamics: when one plus one does not make two.
A brief introduction into the interdisciplinary field of collective dynamics is given, followed by an overview of 'Mathematical Models of Collective Dynamics in Biology and Evolution'.
متن کاملOne Plus One Makes Three (for Social Networks)
Members of social network platforms often choose to reveal private information, and thus sacrifice some of their privacy, in exchange for the manifold opportunities and amenities offered by such platforms. In this article, we show that the seemingly innocuous combination of knowledge of confirmed contacts between members on the one hand and their email contacts to non-members on the other hand ...
متن کاملOne sequence plus one mutation equals two folds.
I n this issue of PNAS, Alexander et al. (1) report an observation that will be a topic of heated discussion among biochemists for a long time to come. A single amino acid substitution can, in the right context, completely change the fold of a protein. And the structural change produced by this one mutation cannot be dismissed as a semantic issue over what constitutes a different fold. As shown...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Quarterly Journal of Speech
سال: 1922
ISSN: 0033-5630,1479-5779
DOI: 10.1080/00335632209379386