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  2. Wastegate - Wikipedia

    en.wikipedia.org/wiki/Wastegate

    Inside the wastegate actuator, a spring acts to open the wastegate, and oil pressure acts to close the wastegate. On the oil output side of the wastegate actuator sits the density controller, an air-controlled oil valve which senses upper deck pressure and controls how fast oil can bleed from the wastegate actuator back to the engine. As the ...

  3. Compact disc bronzing - Wikipedia

    en.wikipedia.org/wiki/Compact_disc_bronzing

    Bronzing is due to a fault in the manufacturing process and can therefore neither be prevented nor be stopped once it has begun. However, storage conditions certainly seem to contribute to the speed of the decay, as some bronzed CDs were already reported as unreadable in the mid-1990s, whereas others were still playable as recently as 2012. As it was noted that CDs stored in p

  4. Boost controller - Wikipedia

    en.wikipedia.org/wiki/Boost_controller

    A 3-port solenoid-type boost controller A 4-port solenoid-type boost controller (used for a dual-port wastegate). The purpose of a boost controller is to reduce the boost pressure seen by the wastegate's reference port, in order to trick the wastegate into allowing higher boost pressures than it was designed for.

  5. In-ear microphones could help doctors 'listen' for early ...

    www.aol.com/ear-microphones-could-help-doctors...

    Boutros said that her colleagues would focus on swallow detection to detect signs of Parkinson’s disease because “Parkinson’s disease patients have difficulties swallowing and regulating ...

  6. Feeling so tired all the time? Iron deficiency might be the ...

    www.aol.com/lifestyle/feeling-tired-time-iron...

    It’s important to remember that “the signs and symptoms of iron deficiency and anemia are relatively non-specific,” adds Cunningham. The one telltale symptom of iron deficiency anemia that ...

  7. Hard disk drive failure - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive_failure

    Another cause of failure is a faulty air filter. The air filters on today's drives equalize the atmospheric pressure and moisture between the drive enclosure and its outside environment. If the filter fails to capture a dust particle, the particle can land on the platter, causing a head crash if the head happens to sweep over it.

  8. The Most Common Reasons People See the Doctor for Scalp Pain

    www.aol.com/most-common-reasons-people-see...

    “These can be very early signs of what will become long-standing, permanent hair loss,” she says. “Time is really of the essence.” ...

  9. Failure of electronic components - Wikipedia

    en.wikipedia.org/wiki/Failure_of_electronic...

    Severe PCB corrosion from a leaky PCB mounted Ni-Cd battery. Printed circuit boards (PCBs) are vulnerable to environmental influences; for example, the traces are corrosion-prone and may be improperly etched leaving partial shorts, while the vias may be insufficiently plated through or filled with solder.