Microbeam radiation therapy uses a lattice of kilo-voltage x-ray âmicro-beamletsâ. The beamlets are 100-300 microns apart (100 microns is roughly the width of a human hair) and each beamlet is 10-50 microns wide.
The National-Security-Law Expert Who Blocked Trump's Travel Ban The former federal prosecutor and deputy counsel to the Department of Homeland Security writes that the prohibition violates the Constitution.
CIEE Statement on Executive Order on Immigrants & Refugees. On Friday, January 27, U.S. President Donald Trump issued an executive order that banned entry into the United States by people from seven Muslim-majority nations for 90 days and ordered that families fleeing Syria be indefinitely blocked from entering the U.S.