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  2. Photoionization detector - Wikipedia

    en.wikipedia.org/wiki/Photoionization_detector

    A photoionization detector or PID is a type of gas detector. Typical photoionization detectors measure volatile organic compounds and other gases in concentrations from sub parts per billion to 10 000 parts per million (ppm). The photoionization detector is an efficient and inexpensive detector for many gas and vapor analytes.

  3. Proportional–integral–derivative controller - Wikipedia

    en.wikipedia.org/wiki/Proportional–integral...

    The dead time θ is the amount of time between when the step change occurred and when the output first changed. The time constant (τ p) is the amount of time it takes for the output to reach 63.2% of the new steady-state value after the step change. One downside to using this method is that it can take a while to reach a new steady-state value ...

  4. Piping and instrumentation diagram - Wikipedia

    en.wikipedia.org/wiki/Piping_and_instrumentation...

    A Piping and Instrumentation Diagram (P&ID or PID) is a detailed diagram in the process industry which shows process equipment together with the instrumentation and control devices. It is also called as mechanical flow diagram (MFD).

  5. Cryostat - Wikipedia

    en.wikipedia.org/wiki/Cryostat

    A cryostat (from cryo meaning cold and stat meaning stable) is a device used to maintain low cryogenic temperatures of samples or devices mounted within the cryostat. Low temperatures may be maintained within a cryostat by using various refrigeration methods, most commonly using cryogenic fluid bath such as liquid helium . [ 1 ]

  6. This "Get It Done" Challenge Will Motivate You to Totally ...

    www.aol.com/lifestyle/done-challenge-motivate...

    Use extra make-up bags to contain things like hair ties and packs of chewing gum.” You can even go the extra mile and get a handbag organizer to keep the contents of your purses neat and tidy.

  7. Portable oxygen concentrator - Wikipedia

    en.wikipedia.org/wiki/Portable_oxygen_concentrator

    A portable oxygen concentrator (POC) is a device used to provide oxygen therapy to people that require greater oxygen concentrations than the levels of ambient air. It is similar to a home oxygen concentrator (OC), but is smaller in size and more mobile. They are small enough to carry and many are now FAA-approved for use on airplanes.

  8. Child hospitalized after holiday drone show in Orlando goes ...

    www.aol.com/child-hospitalized-holiday-drone...

    PHOTO: One person was injured when a holiday drone show in Orlando on Dec. 21, 2024, went haywire and several of the unmanned aerial devices crashed into each other and plummeted to the ground ...

  9. When body image woes come wrapped in a bow - AOL

    www.aol.com/why-think-twice-giving-fitness...

    Because these devices track things such as steps and calories, “what seems innocent can slide into obsessive thinking,” Comas added. “It’s like a little eating disorder brain on your wrist.”

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