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  2. Personal flotation device - Wikipedia

    en.wikipedia.org/wiki/Personal_flotation_device

    Personal flotation devices being worn on a navy transport . A personal flotation device (PFD; also referred to as a life jacket, life preserver, life belt, Mae West, life vest, life saver, cork jacket, buoyancy aid or flotation suit) is a flotation device in the form of a vest or suit that is worn by a user to prevent the wearer from drowning in a body of water.

  3. Macrocephaly - Wikipedia

    en.wikipedia.org/wiki/Macrocephaly

    Macrocephaly is a condition in which circumference of the human head is abnormally large. [1] It may be pathological or harmless, and can be a familial genetic characteristic. People diagnosed with macrocephaly will receive further medical tests to determine whether the syndrome is accompanied by particular disorders .

  4. Crevice corrosion - Wikipedia

    en.wikipedia.org/wiki/Crevice_corrosion

    Depending on the environment developed in the crevice and the nature of the metal, the crevice corrosion can take a form of: pitting (i.e., formation of pits), but note pitting and crevice corrosion are not the same phenomenon, [8] filiform corrosion (this type of crevice corrosion that may occur on a metallic surface underneath an organic ...

  5. Corrosion - Wikipedia

    en.wikipedia.org/wiki/Corrosion

    When corrosion does occur, it is almost always a simple dissolution of the material or chemical reaction, rather than an electrochemical process. A common example of corrosion protection in ceramics is the lime added to soda–lime glass to reduce its solubility in water; though it is not nearly as soluble as pure sodium silicate , normal glass ...

  6. Galling - Wikipedia

    en.wikipedia.org/wiki/Galling

    When a material galls, some of it is pulled with the contacting surface, especially if there is a large amount of force compressing the surfaces together. [1] Galling is caused by a combination of friction and adhesion between the surfaces, followed by slipping and tearing of crystal structure beneath the surface. [ 2 ]

  7. Liberal women withhold sex, shave heads to protest Trump win ...

    www.aol.com/liberal-women-withhold-sex-shave...

    The demonstration was inspired by South Korea’s “4B” movement against gender-based violence where some women in that country have vowed to follow the four “no’s” — no sex, no dating ...

  8. Galvanic anode - Wikipedia

    en.wikipedia.org/wiki/Galvanic_anode

    In brief, corrosion is a chemical reaction occurring by an electrochemical mechanism (a redox reaction). [1] During corrosion of iron or steel there are two reactions, oxidation (equation 1), where electrons leave the metal (and the metal dissolves, i.e. actual loss of metal results) and reduction, where the electrons are used to convert oxygen and water to hydroxide ions (equation 2): [2]

  9. AOL Mail - AOL Help

    help.aol.com/products/aol-webmail

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.