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  2. Robertson screw - Wikipedia

    en.wikipedia.org/wiki/Robertson_screw

    A Robertson screw, also known as a square screw [1] or Scrulox, [2] is a type of screw with a square-shaped socket in the screw head and a corresponding square protrusion on the tool. Both the tool and socket have a slight taper .

  3. Barlow's formula - Wikipedia

    en.wikipedia.org/wiki/Barlow's_formula

    The design of a complex pressure containment system involves much more than the application of Barlow's formula. For example, in 100 countries the ASME BPVCcode stipulates the requirements for design and testing of pressure vessels.

  4. DPSIR - Wikipedia

    en.wikipedia.org/wiki/DPSIR

    The Driver-Pressure-State-Impact-Response framework was developed by the European Environment Agency (EEA) in 1999. It was built upon several existing environmental reporting frameworks, like the Pressure-State-Response (PSR) framework developed by the Organization for Economic Co-operation and Development (OECD) in 1993, which itself was an extension of Rapport and Friend's Stress-Response ...

  5. File:PAR model.pdf - Wikipedia

    en.wikipedia.org/wiki/File:PAR_model.pdf

    Pressure and Release model after Blaikie et al. (1994). ... If this file has problems with attribution, ... then replace this Template with ...

  6. Preconsolidation pressure - Wikipedia

    en.wikipedia.org/wiki/Preconsolidation_pressure

    Preconsolidation pressure is the maximum effective vertical overburden stress that a particular soil sample has sustained in the past. [1] This quantity is important in geotechnical engineering , particularly for finding the expected settlement of foundations and embankments.

  7. Remove Banner Ads with Ad-Free AOL Mail | AOL Products

    www.aol.com/products/utilities/ad-free-mail

    SYSTEM REQUIREMENTS. Mobile and desktop browsers: Works best with the latest version of Chrome, Edge, FireFox and Safari. Windows: Windows 7 and newer Mac: MacOS X and newer Note: Ad-Free AOL Mail ...

  8. Pressure head - Wikipedia

    en.wikipedia.org/wiki/Pressure_head

    Pressure head is a component of hydraulic head, in which it is combined with elevation head. When considering dynamic (flowing) systems, there is a third term needed: velocity head. Thus, the three terms of velocity head, elevation head, and pressure head appear in the head equation derived from the Bernoulli equation for incompressible fluids:

  9. Pressure - Wikipedia

    en.wikipedia.org/wiki/Pressure

    Other units of pressure, such as pounds per square inch (lbf/in 2) and bar, are also in common use. The CGS unit of pressure is the barye (Ba), equal to 1 dyn·cm −2, or 0.1 Pa. Pressure is sometimes expressed in grams-force or kilograms-force per square centimetre ("g/cm 2" or "kg/cm 2") and the like without properly identifying the force ...