منابع مشابه
British Columbia capital regional district 100% smokefree bylaw: a successful public health campaign despite industry opposition.
OBJECTIVE To describe how the British Columbia Capital Regional District successfully passed, implemented, and enforced a 100% smokefree bylaw in all public places, including restaurants and bars, despite an aggressive campaign by the tobacco industry (acting through the hospitality industry) to stop it. METHODS Information was obtained from news reports, internal tobacco industry documents, ...
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Is spacetime really a continuum, with points being described—at least locally— by lists of real numbers? Or is this description, though immensely successful so far, just an approximation that breaks down at short distances? Rather than trying to answer this hard question, let’s look back at the struggles with the continuum that mathematicians and physicists have had so far. The worries go back ...
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At the end of October 2012, more than eight million homes lost power as Superstorm Sandy battered the east coast of the United States. The electricity system disruption from this extreme weather event impacted households and businesses across seventeen states, including those as far west as Michigan. The storm left some without power for weeks, and lower Manhattan was in the dark for several da...
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ژورنال
عنوان ژورنال: Nature
سال: 1989
ISSN: 0028-0836,1476-4687
DOI: 10.1038/338190a0