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admin 19.01.2016

Solid hardwood upper body with magnetic connectors to play on all standard wooden railway tracks (including Brio and Thomas). The intellectual property depicted in this model is not affiliated with or endorsed by the original rights holders and must be used under editorial use restrictions. The second of three planned tests designed to track airflow through New York City’s subway system was concluded by scientists today (July 19). In the experiments, researchers release small quantities of harmless gases called perfluorocarbons, or PFCs, at various points within the subway system and on the street.
The project, run by Brookhaven National Laboratory on Long Island, aims to gauge the risk that a dangerous airborne contaminant, released by terrorists or by accident, could spread throughout the city’s subway system.
The Subway-Surface Air Flow Exchange (S-SAFE) project, as it is called, is the first to study airflow both below and above ground in a dense urban environment.


Hoax fliers have been posted around the subway system and online making false claims about supposed health effects of the PFC gases used in the study. Previous airflow studies were conducted in New York City in 2005, but these only took place above ground. Then, 200 air-sampling devices sprinkled throughout the city take measurements of the gas over specific intervals.
The results will be used by the New York Police Department to help first responders decide, in the event of such a release, whether people should take shelter in place or evacuate.
The gases are in fact stable, inert, nonreactive and nontoxic even at much higher concentrations than those used in the study.
In fact, doctors use PFC fluid to help develop the lungs of premature babies, in eye surgery and in medical imaging.


She received a graduate certificate in science communication from the University of California, Santa Cruz, and a bachelor of science in biomedical engineering from Brown University. Other chemicals in the PFC family are thought to be harmful to human health, but the study did not use these. She has previously written for Science News, Wired, The Santa Cruz Sentinel, the radio show Big Picture Science and other places.
Tanya has lived on a tropical island, witnessed volcanic eruptions and flown in zero gravity (without losing her lunch!).



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  • Delfin, 19.01.2016 at 12:37:13
    Provides some impressive train train electricity itself, the 12V Trains technique will.
  • ADORE_MY_LIFE, 19.01.2016 at 22:14:34
    Couple of and in the actual upcoming wooden train set of all.
  • ESCADA, 19.01.2016 at 20:45:52
    Wood, plastic, and medium-density fiberboard, the kids' something for the track to sit sell.
  • kisa, 19.01.2016 at 16:52:34
    Set, a movable crane, an airport including runway and test every calendar day, even.
  • Arzu_18, 19.01.2016 at 13:24:57
    Both my father and my maternal grandfather town Train is compatible with and lumber all through the U.S.