منابع مشابه
The amazing shrinking laboratory.
A new monoclonal antibody to epithelial membrane antigen (EMA) E29. A comparison of its immunocytochemical reactivity with polyclonal anti-EMA antibodies and with another monoclonal antibody, HMFG-2. Summary Two polyclonal rabbit antibodies to epithelial membrane antogen (EMA), two mouse monoclonal antibodies (E29 and HMFG-2), and a "cocktail" of these two monoclonals have been compared using a...
متن کاملThe Incredible Shrinking Torus ⋆
Using M(atrix) Theory, the dualities of toroidally compactified M-theory can be formulated as properties of super Yang Mills theories in various dimensions. We consider the cases of compactification on one, two, three, four and five dimensional tori. The dualities required by string theory lead to conjectures of remarkable symmetries and relations between field theories as well as extremely unu...
متن کاملShrinking the Authentication Footprint
Developers create paths for users to tread. Some users will stay on the beaten track; others will diverge and take risky shortcuts. If user-preferred and developer-created paths diverge too much, it is time for the developer to consider a new path. A case in point is the humble password. They fill an important developer need: a cheap and easy mechanism to control access and enforce accountabili...
متن کاملThe Earth is not yet an artifact
n the previous article in this issue [1], Brad Allenby argues for a more active style of planetary management. He notes, " the biosphere itself, at levels from the genetic to the landscape , is increasingly a human product. " While the earth is undoubtedly being transformed by human action [2]-[4], the implications of the transformation for environmental management are in dispute. Allenby sugge...
متن کاملWhere is the best site on Earth ?
The Antarctic plateau contains the best sites on earth for many forms of astronomy, but none of the existing bases was selected with astronomy as the primary motivation. In this paper, we try to systematically compare the merits of potential observatory sites. We include South Pole, Domes A, C and F, and also Ridge B (running NE from Dome A), and what we call ‘Ridge A’ (running SW from Dome A)....
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ژورنال
عنوان ژورنال: Nature
سال: 1912
ISSN: 0028-0836,1476-4687
DOI: 10.1038/090335a0