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.
China has reportedly blocked most services of the Facebook-owned WhatsApp messaging app, as online censorship increases ahead of a major political summit next month. Citing communications experts, the New York Times reports that the service, which China had already temporarily tried to curtail in recent months, was seeing disruptions as early as Wednesday, and that by early this week the block was comprehensive.