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  2. Polyacrylonitrile - Wikipedia

    en.wikipedia.org/wiki/Polyacrylonitrile

    Polyacrylonitrile (PAN) is a synthetic, semicrystalline organic polymer resin, with the linear formula (CH 2 CHCN) n. [2] Almost all PAN resins are copolymers with acrylonitrile as the main monomer .

  3. Peroxyacetyl nitrate - Wikipedia

    en.wikipedia.org/wiki/Peroxyacetyl_nitrate

    Peroxyacetyl nitrate, or PAN, is an oxidant that is more stable than ozone. Hence, it is more capable of long-range transport than ozone. Hence, it is more capable of long-range transport than ozone. It serves as a carrier for oxides of nitrogen (NOx) into rural regions and causes ozone formation in the global troposphere .

  4. Peroxyacyl nitrates - Wikipedia

    en.wikipedia.org/wiki/Peroxyacyl_nitrates

    The general structural formula of a peroxyacyl nitrate peroxy acetyl nitrate, the most common PAN. In organic chemistry, peroxyacyl nitrates (also known as Acyl peroxy nitrates, APN or PANs) are powerful respiratory and eye irritants present in photochemical smog.

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  6. Harley-Davidson Panhead engine - Wikipedia

    en.wikipedia.org/wiki/Harley-Davidson_Panhead_engine

    The engine is a two-cylinder, two-valve-per-cylinder, pushrod V-twin, made in both 61 c.i. (EL) and 74 c.i. (FL, FLH) displacements. The Panhead engine replaced the Knucklehead engine in 1948 and was manufactured until 1965 when it was replaced by the Shovelhead .

  7. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    A payment card number, primary account number (PAN), or simply a card number, is the card identifier found on payment cards, such as credit cards and debit cards, as well as stored-value cards, gift cards and other similar cards. In some situations the card number is referred to as a bank card number. The card number is primarily a card ...

  8. 6061 aluminium alloy - Wikipedia

    en.wikipedia.org/wiki/6061_aluminium_alloy

    12) often form as inclusions in the material. [13] Grain boundaries in extruded plate 6061 aluminium alloy. Grain sizes in aluminium alloys are heavily dependent upon the processing techniques and heat treatment. Different cross-sections of material which has been stressed can cause order of magnitude differences in grain size. [14]

  9. Pirates 3B Ke'Bryan Hayes is nearly pain-free after chronic ...

    www.aol.com/pirates-3b-kebryan-hayes-nearly...

    He played like one in 2023, when he hit .271 with 15 homers and 61 RBIs. All that momentum came to a screeching halt in 2024. “Last year was a grind for him,” general manager Ben Cherington said.