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  2. Aluminium–silicon alloys - Wikipedia

    en.wikipedia.org/wiki/Aluminium–silicon_alloys

    Aluminium–silicon alloys or Silumin is a general name for a group of lightweight, high-strength aluminium alloys based on an aluminum – silicon system (AlSi) that consist predominantly of aluminum - with silicon as the quantitatively most important alloying element. Pure AlSi alloys cannot be hardened, the commonly used alloys AlSiCu (with ...

  3. Denver Developmental Screening Tests - Wikipedia

    en.wikipedia.org/wiki/Denver_Developmental...

    The Denver Developmental Screening Test ( DDST) was introduced in 1967 to identify young children, up to age six, with developmental problems. A revised version, Denver II, was released in 1992 to provide needed improvements. These screening tests provide information about a range of ages during which normally developing children acquire ...

  4. Window screen - Wikipedia

    en.wikipedia.org/wiki/Window_screen

    Window screen. A window screen (also known as insect screen, bug screen, fly screen, flywire, wire mesh, or window net) is designed to cover the opening of a window. It is usually a mesh made of metal, fibreglass, plastic wire, or other pieces of plastic and stretched in a frame of wood or metal. It serves to keep leaves, debris, bugs, birds ...

  5. Capsize screening formula - Wikipedia

    en.wikipedia.org/wiki/Capsize_screening_formula

    Capsize screening formula. The capsize screening formula (CSF) is a controversial method of establishing the ability of boats to resist capsizing. It is defined for sailboats as: Beam / ( ( Displacement /64.2) 1/3 ), with Displacement measured in pounds, and Beam in feet. A lower figure supposedly indicates greater stability, however the ...

  6. Cost of electricity by source - Wikipedia

    en.wikipedia.org/wiki/Cost_of_electricity_by_source

    The levelized cost of electricity (LCOE) is a metric that attempts to compare the costs of different methods of electricity generation consistently. Though LCOE is often presented as the minimum constant price at which electricity must be sold to break even over the lifetime of the project, such a cost analysis requires assumptions about the value of various non-financial costs (environmental ...

  7. List of Microsoft Windows versions - Wikipedia

    en.wikipedia.org/wiki/List_of_Microsoft_Windows...

    A "personal computer" version of Windows is considered to be a version that end-users or OEMs can install on personal computers, including desktop computers, laptops, and workstations. The first five versions of WindowsWindows 1.0, Windows 2.0, Windows 2.1, Windows 3.0, and Windows 3.1 –were all based on MS-DOS, and were aimed at both ...

  8. Aluminum Can Prices: Are They Still Worth Collecting?

    www.aol.com/aluminum-prices-much-yours-worth...

    However, it often works better as a side project that supports sustainability rather than as a method to earn a wheelbarrow full of cash. Typically, recyclers in the U.S. can expect aluminum can ...

  9. Aluminium oxide - Wikipedia

    en.wikipedia.org/wiki/Aluminium_oxide

    Aluminium oxide in its powdered form. Al 2 O 3 is an electrical insulator but has a relatively high thermal conductivity ( 30 Wm−1K−1) [ 2] for a ceramic material. Aluminium oxide is insoluble in water. In its most commonly occurring crystalline form, called corundum or α-aluminium oxide, its hardness makes it suitable for use as an ...

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