منابع مشابه
From the Archive
As a postdoc studying chromosomal structure with David Agard and John Sedat in the late 1980s, Andrew Belmont had observed intriguing ultrastructural details in interphase nuclei. “We’d see large-scale fi bers about 100 nanometers thick, and then there’d be a 10to 30-nanometer-thick fi ber looping out, which we thought might represent an active gene,” says Belmont. “However, we couldn’t rule ou...
متن کاملFrom the Archive
Vascular endothelial growth factor (VEGF) has many different effects on endothelial cells, stimulating, for example, their proliferation, differentiation, and migration. In the early 2000s, however, it remained unclear how all of these activities were coordinated to induce the formation of complex vascular networks. But that began to change in 2003, when Christer Betsholtz and colleagues reveal...
متن کاملThemes from 1972
Although 1972 was the year that Winograd published his now classic natural language Study of the blocks world, that fact had not yet penetrated to the ACL. At that time people with AI computational interests were strictly in a minority in the association and it was a radical move to appoint Roger Schank as program chairman for the year's meeting. That was also the year that we didn't have a pre...
متن کاملDevelopment of smoking by birth cohort in the adult population in eastern Finland 1972-97.
OBJECTIVE To analyse the dynamics of smoking prevalence, initiation, and cessation in relation to sex, age, birth cohort, study year, and educational level. DESIGN Six independent cross-sectional population surveys repeated every five years between 1972 and 1997. SETTING The provinces of North Karelia and Kuopio in eastern Finland. SUBJECTS Independent random samples of 18,088 men and 19,...
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ژورنال
عنوان ژورنال: Index on Censorship
سال: 1997
ISSN: 0306-4220,1746-6067
DOI: 10.1177/030642209702600303