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Dialysis tubing. Dialysis tubing, also known as Visking tubing, is an artificial semi-permeable membrane tubing [1] used in separation techniques, that facilitates the flow of tiny molecules in solution based on differential diffusion.
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Semipermeable membrane is a type of synthetic or biologic, polymeric membrane that allows certain molecules or ions to pass through it by osmosis. The rate of passage depends on the pressure , concentration , and temperature of the molecules or solutes on either side, as well as the permeability of the membrane to each solute.
Understaffed and overworked air traffic control crews have long been an issue at Reagan National and other airports, lawmakers say, and could have contributed to the nation’s deadliest air crash ...
An emergency response team with Washington, DC Fire and EMS make their way to airplane wreckage in the Potomac River near Ronald Reagan Washington Airport on January 30, 2025, in Arlington, Virginia.
One night in late October, Whitney Patterson spotted a YouTube video about people buying shares in Trump Media & Technology Group, the U.S. president-elect's social media and streaming company.
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The acquisition of Greenland by the United States, as proposed by President Donald Trump, continues to make waves on the other side of the Atlantic as a Danish politician became the latest voice ...