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They are sometimes applied as blends such as HFE 7100, which is a mixture of methyl nonafluorobutyl ether (methoxyperfluorobutane) and methyl nonafluoroisobutyl ether. [2] 3M produces hydrofluoroether compounds under the names Novec 7000, 7100, 7200, 7300, 7500, and 7700 as liquid coolants for many applications including full immersion cooling ...
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Etymology. The term ergonomics (from the Greek ἔργον, meaning "work", and νόμος, meaning "natural law") first entered the modern lexicon when Polish scientist Wojciech Jastrzębowski used the word in his 1857 article Rys ergonomji czyli nauki o pracy, opartej na prawdach poczerpniętych z Nauki Przyrody (The Outline of Ergonomics; i.e. Science of Work, Based on the Truths Taken from ...
The National Federation of Federal Employees ( NFFE) is an American labor union which represents about 100,000 public employees in the federal government . NFFE has about 200 local unions, most of them agency-wide bargaining units. Its members work primarily in the Department of Defense, the Forest Service, the Department of Veterans Affairs ...
WASHINGTON (Reuters) -The Federal Aviation Administration said on Monday it has opened an investigation into the Boeing 787 Dreamliner after the planemaker said some employees had committed ...
The United States Department of Homeland Security ( DHS) is the U.S. federal executive department responsible for public security, roughly comparable to the interior or home ministries of other countries. Its stated missions involve anti-terrorism, border security, immigration and customs, cyber security, and disaster prevention and management.
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