منابع مشابه
Dust, Unsettled
A s sure as the sun rises, houses collect dust. It gathers on our knickknacks and dirties the carpets. More than just dirt, house dust is a mix of sloughed-off skin cells, hair, clothing fibers, bacteria, dust mites, bits of dead bugs, soil particles, pollen, and microscopic specks of plastic. It's our detritus and, it turns out, has a lot to reveal about our lifestyle. For one thing, it's far ...
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The objective proposed by clinical rheumatologists over the last 2 decades has been to acquire new skills that enable them to carry out an increasing number of procedures. This is now a reality in fields like ultrasound, capillaroscopy, densitometry and biopsies, among others. Thus, in the 21st century, rheumatologists have come to be more technically proficient, with dedicated clinics and trai...
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TO THE EDITOR—The article by Schmader et al [1] summarizing a Zostavax trial in 50to 59-year-old participants raises new concerns and rekindles others [2]. Zostavax vaccine introduces a new virus which, like chickenpox, becomes latent in cranial nerves and autonomic and dorsal root ganglia [3]. These 2 versions of the same virus will permanently populate similar anatomic sites. Moreover, clinic...
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Global warming during the Paleocene-Eocene thermal maximum (PETM) was associated with the release of large amounts of 12 C-enriched carbon, as reflected in the carbon isotope excursion (CIE) observed globally in sedimentary records. The New Jersey shelf PETM sequences are expanded relative to deep-sea settings, offering high temporal resolution to unravel the pathway of carbon release, although...
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We are in an era where computational building blocks are plentiful and inexpensive. A single chip today can hold over 100 1GHz °oating-point units for a total performance of 100 GFLOPS/chip. Many graphics chips achieve 80GFLOPS and over 1TOP rendering performance, and cost less than $100. Embedded processors are less powerful, but incredibly cheap. It is fair to say that a raw GFLOPS costs less...
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ژورنال
عنوان ژورنال: Nature
سال: 1987
ISSN: 0028-0836,1476-4687
DOI: 10.1038/330684b0