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  2. Conservation and restoration of copper-based objects

    en.wikipedia.org/wiki/Conservation_and...

    In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. [12] Copper metallurgy was flourishing in South America, particularly in Peru around 1000 AD; it proceeded at a much slower rate on other ...

  3. Solid sorbents for carbon capture - Wikipedia

    en.wikipedia.org/wiki/Solid_sorbents_for_carbon...

    Solid sorbents for carbon capture include a diverse range of porous, solid-phase materials, including mesoporous silicas, zeolites, and metal-organic frameworks.These have the potential to function as more efficient alternatives to amine gas treating processes for selectively removing CO 2 from large, stationary sources including power stations. [1]

  4. Magnesite - Wikipedia

    en.wikipedia.org/wiki/Magnesite

    Magnesite can be cut, drilled, and polished to form beads that are used in jewelry-making. Magnesite beads can be dyed into a broad spectrum of bold colors, including a light blue color that mimics the appearance of turquoise. The Japanese-American artist Isamu Noguchi used magnesite as a sculptural material for some of his artworks. [28]

  5. Murano beads - Wikipedia

    en.wikipedia.org/wiki/Murano_beads

    The copper tube helps make many other different shapes. The lamp-work method is the most time-consuming method of glass bead-making, as each bead must be formed individually. Using a torch for heat, Murano glass rods and tubes are heated to a molten state and wrapped around a metal rod until the desired shape is achieved. Several layers of ...

  6. Seed bead - Wikipedia

    en.wikipedia.org/wiki/Seed_bead

    Opaque - the solid color prevents light from passing through the bead; Matte - the bead is textured on a microscopic level to result in a matte finish; Silver-lined - a silvery coating which reflects light is applied to the inside of the seed bead; Copper-lined - a coppery coating which reflects a reddish light is applied to the inside of the ...

  7. Bead - Wikipedia

    en.wikipedia.org/wiki/Bead

    A selection of glass beads Merovingian bead Trade beads, 18th century Trade beads, 18th century. A bead is a small, decorative object that is formed in a variety of shapes and sizes of a material such as stone, bone, shell, glass, plastic, wood, or pearl and with a small hole for threading or stringing. Beads range in size from under 1 ...

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