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| Speed limit set for ultrafast electrical switch Posted: 28 Jul 2013 10:40 AM PDT Researchers have clocked the fastest-possible electrical switching in magnetite, a naturally magnetic mineral. Their results could drive innovations in the tiny transistors that control the flow of electricity across silicon chips, enabling faster, more powerful computing devices.  |
| Migraines associated with variations in structure of brain arteries Posted: 26 Jul 2013 04:17 PM PDT The network of arteries supplying blood flow to the brain is more likely to be incomplete in people who suffer migraine, a new study reports. Variations in arterial anatomy lead to asymmetries in cerebral blood flow that might contribute to the process triggering migraines.  |
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