منابع مشابه
Cellular spelunking: exploring adipocyte caveolae.
It has been known for decades that the adipocyte cell surface is particularly rich in small invaginations we now know to be caveolae. These structures are common to many cell types but are not ubiquitous. They have generated considerable curiosity, as manifested by the numerous publications on the topic that describe various, sometimes contradictory, caveolae functions. Here, we review the fiel...
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Many chemotherapeutic regimens produce neutropenia, which predisposes to microbial infection. However, not all neutropenic individuals develop infections, so the ability to predict this outcome would be a powerful clinical tool. In this issue of the JCI, Malka et al. describe a dynamic system model of neutrophil bactericidal activity that confirms and extends the concept of critical neutrophil ...
متن کاملNormativity redux.
ROBIN S. WAPLES,∗ PETER B. ADAMS,† JAMES BOHNSACK,‡ AND BARBARA L. TAYLOR§ ∗Northwest Fisheries Science Center, 2725 Montlake Boulevard East, Seattle, WA 98112, U.S.A., email [email protected] †Southwest Fisheries Science Center, 110 Shaffer Road, Santa Cruz, CA 95060, U.S.A. ‡Southeast Fisheries Science Center, 75 Virginia Beach Drive, Miami, FL 33149, U.S.A. §Southwest Fisheries Science C...
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the human species is one of the young est forms of life on earth, yet it has become the dominant force in evolu tion. Most of the main environmental prob lems—global warming, pollution, loss of biodiversity, land erosion and the emission of greenhouse gases—are caused, either directly or indirectly, by human activities. Optimists hope that these huge environ mental changes might be at least...
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In this paper we analyze a class of second-order traffic models and show that these models support stable oscillatory traveling waves typical of the waves observed on a congested roadway. The basic model has trivial or constant solutions where cars are uniformly spaced and travel at a constant equilibrium velocity that is determined by the car spacing. The stable traveling waves arise because t...
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ژورنال
عنوان ژورنال: Communications of the ACM
سال: 2008
ISSN: 0001-0782,1557-7317
DOI: 10.1145/1400181.1400194