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  2. Link/cut tree - Wikipedia

    en.wikipedia.org/wiki/Link/cut_tree

    A link/cut tree is a data structure for representing a forest, a set of rooted trees, and offers the following operations: Add a tree consisting of a single node to the forest. Given a node in one of the trees, disconnect it (and its subtree) from the tree of which it is part.

  3. Copper(II) telluride - Wikipedia

    en.wikipedia.org/wiki/Copper(II)_telluride

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  4. Arborist - Wikipedia

    en.wikipedia.org/wiki/Arborist

    An arborist using a chainsaw to cut a eucalyptus tree in a public park Two arborists climbing and dismantling a Norway Maple in Ontario, Canada. An arborist, or (less commonly) arboriculturist, is a professional in the practice of arboriculture, which is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants in dendrology and horticulture.

  5. Ding Dong tree - Wikipedia

    en.wikipedia.org/wiki/Ding_Dong_tree

    The Ding Dong tree is a Copper beech tree (Fagus sylvatica f. purpurea ) in Prestonpans, Scotland , named Scotland's Tree of the Year in 2016. [ 1 ] It achieved 8th place in the European Tree of the Year Award the following year. [ 2 ]

  6. Metallurgy during the Copper Age in Europe - Wikipedia

    en.wikipedia.org/wiki/Metallurgy_during_the...

    Reconstruction of Ötzi's copper axe (c. 3300 BCE). The Copper Age, also called the Eneolithic or the Chalcolithic Age, has been traditionally understood as a transitional period between the Neolithic and the Bronze Age, in which a gradual introduction of the metal (native copper) took place, while stone was still the main resource utilized.

  7. Copper–tungsten - Wikipedia

    en.wikipedia.org/wiki/Copper–tungsten

    The mixture with less wt.% of copper has higher density, higher hardness, and higher resistivity. The typical density of CuW90, with 10% of copper, is 16.75 g/cm 3 and 11.85 g/cm 3 for CuW50 . CuW90 has higher hardness and resistivity of 260 HB kgf/mm 2 and 6.5 μΩ.cm than CuW50. Typical properties of commonly used copper tungsten compositions [1]

  8. Cut (earthworks) - Wikipedia

    en.wikipedia.org/wiki/Cut_(earthworks)

    Road cutting. In civil engineering, a cut or cutting is where soil or rock from a relative rise is removed. Cuts are typically used in road, rail, and canal construction to reduce a route's length and grade. Cut and fill construction uses the spoils from cuts to fill in defiles to create straight routes at steady grades cost-effectively.

  9. Pruning - Wikipedia

    en.wikipedia.org/wiki/Pruning

    An arborist pruning a tree near the Statue of Liberty. Pruning in an urban setting is crucial due to the tree being in drastically different conditions than where they naturally grow. [3] Arborists, orchardists, and gardeners use various garden tools and tree cutting tools designed for the purpose, such as secateurs, loppers, handsaws, or ...