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  2. Diffusion tube - Wikipedia

    en.wikipedia.org/wiki/Diffusion_tube

    A diffusion tube consists of a small, hollow, usually transparent, acrylic or polypropylene plastic tube, roughly 70mm long, with a cap at each end. One of the caps (coloured white) is either completely removed to activate the tube (in the case of nitrogen dioxide sampling) or contains a filter allowing in just the gas being studied.

  3. Stefan tube - Wikipedia

    en.wikipedia.org/wiki/Stefan_tube

    In chemical engineering, a Stefan tube is a device that was devised by Josef Stefan in 1874. [1] It is often used for measuring diffusion coefficients . [ 1 ] [ 2 ] It comprises a vertical tube, over the top of which a gas flows and at the bottom of which is a pool of volatile liquid that is maintained in a constant-temperature bath.

  4. Dialysis tubing - Wikipedia

    en.wikipedia.org/wiki/Dialysis_tubing

    Dialysis tubing. Dialysis tubing, also known as Visking tubing, is an artificial semi-permeable membrane tubing [1] used in separation techniques, that facilitates the flow of tiny molecules in solution based on differential diffusion.

  5. Mom shares the moment her kid wasn't invited to a birthday ...

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    When Alyssa Miller’s husband is traveling for work, she sends him after-school videos of their 5-year-old daughter, Finley. “Usually she shares a funny story about something that happened ...

  6. Air pollution measurement - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_measurement

    A diffusion tube is an example of a passive air pollution monitor. Passive devices are relatively simple and low-cost. [6] They work by soaking up or otherwise passively collecting a sample of the ambient air, which then has to be analyzed in a laboratory.

  7. 'Emilia PĂ©rez' controversy: Why 'torturous' movie is ... - AOL

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    The movie has also received backlash for its trans representation. Viewers have shared dismay that "Emilia" is the film getting the spotlight for transgender representation, versus underseen films ...

  8. This Supplement Has Been Called The Fountain Of Youth ... - AOL

    www.aol.com/supplement-called-fountain-youth...

    NAD+ supplements, IV drips, and injections have gained a lot of traction on social media due to their supposed anti-aging benefits. Here, doctors reveals the truth behind the trend.

  9. Reaction–diffusion system - Wikipedia

    en.wikipedia.org/wiki/Reaction–diffusion_system

    Reaction–diffusion systems are mathematical models that correspond to several physical phenomena. The most common is the change in space and time of the concentration of one or more chemical substances: local chemical reactions in which the substances are transformed into each other, and diffusion which causes the substances to spread out ...