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  2. Surfactin - Wikipedia

    en.wikipedia.org/wiki/Surfactin

    Surfactin is a cyclic lipopeptide, commonly used as an antibiotic for its capacity as a surfactant. [2] It is an amphiphile capable of withstanding hydrophilic and hydrophobic environments. The Gram-positive bacterial species Bacillus subtilis produces surfactin for its antibiotic effects against competitors. [ 3 ]

  3. Crossbow - Wikipedia

    en.wikipedia.org/wiki/Crossbow

    21st-century hunting compound crossbow. A crossbow is a ranged weapon using an elastic launching device consisting of a bow-like assembly called a prod, mounted horizontally on a main frame called a tiller, which is hand-held in a similar fashion to the stock of a long gun. Crossbows shoot arrow-like projectiles called bolts or quarrels.

  4. Bullet-shooting crossbow - Wikipedia

    en.wikipedia.org/wiki/Bullet-shooting_crossbow

    The small caliber rounds are perfect for killing animals like birds and rats. Being a crossbow, it does not produce much sound. Even though more powerful weapons were invented, like the air gun, the bullet-shooting crossbow was used extensively throughout history because it was not loud enough to scare prey off. [7]

  5. Emulsion polymerization - Wikipedia

    en.wikipedia.org/wiki/Emulsion_polymerization

    Surfactants with a low critical micelle concentration (CMC) are favored; the polymerization rate shows a dramatic increase when the surfactant level is above the CMC, and minimization of the surfactant is preferred for economic reasons and the (usually) adverse effect of surfactant on the physical properties of the resulting polymer. Mixtures ...

  6. Triton X-100 - Wikipedia

    en.wikipedia.org/wiki/Triton_X-100

    Triton X-100 (C 14 H 22 O(C 2 H 4 O) n) is a nonionic surfactant that has a hydrophilic polyethylene oxide chain (on average it has 9.5 ethylene oxide units) and an aromatic hydrocarbon lipophilic or hydrophobic group. The hydrocarbon group is a 4-(1,1,3,3-tetramethylbutyl)-phenyl group.

  7. Glossary of archery terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_archery_terms

    arbalest – A late variation of the crossbow that came into use in Europe during the 12th century; archer (practitioner) – One who practices archery (a.k.a. bowman) archer's paradox (effect) – The effect produced by an arrow flexing as it leaves the bow; archery (practice) – The practice of using a bow to shoot arrows

  8. Arrowslit - Wikipedia

    en.wikipedia.org/wiki/Arrowslit

    Inside of an arrowslit, where an archer would stand, at Corfe Castle. Exterior view of arrowslits in the Bargate gatehouse in Southampton. An arrowslit (often also referred to as an arrow loop, loophole or loop hole, and sometimes a balistraria [1]) is a narrow vertical aperture in a fortification through which an archer can launch arrows or a crossbowman can launch bolts.

  9. Crossbow bolt - Wikipedia

    en.wikipedia.org/wiki/Crossbow_bolt

    An unusually small crossbow bolt with a tapered "waist" shaft section and rear skirt compared to a 1 euro cent coin A bolt or quarrel is a dart -like projectile used by crossbows . [ 1 ] The word quarrel is from the Old French quarrel (> French carreau ) "square thing", [ 2 ] specialized use as quarrel d'arcbaleste (> carreau d'arbalète ...

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