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  2. Escalator - Wikipedia

    en.wikipedia.org/wiki/Escalator

    Seeberger escalators featured flat treads and smooth risers; other escalator models have cleated treads and smooth risers. The steps are linked by a continuous metal chain that forms a closed loop. The front and back edges of the steps each have two wheels, the rear of which are set further apart and fit into the trailer-wheel track while the ...

  3. Paternoster lift - Wikipedia

    en.wikipedia.org/wiki/Paternoster_lift

    A paternoster in Prague Paternoster elevator in The Hague, when it was still in operation. A paternoster (/ ˌ p eɪ t ər ˈ n ɒ s t ər /, / ˌ p ɑː-/, or / ˌ p æ-/) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping.

  4. File:A Byte of Python.pdf - Wikipedia

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

    A Byte of Python: Author: Swaroop C H: Software used: DocBook XSL Stylesheets with Apache FOP: Conversion program: Apache FOP Version 1.1: Encrypted: no: Page size: 595.275 x 841.889 pts (A4) Version of PDF format: 1.4

  5. Elevator - Wikipedia

    en.wikipedia.org/wiki/Elevator

    Part 3: Global conformity assessment procedures (GCAP) – Prerequisites for certification of conformity of lift systems, lift components and lift functions; Part 4: Global conformity assessment procedures (GCAP) – Certification and accreditation requirements; ISO/TC 178 is the Technical Committee on Lifts, escalators and moving walks. [99] [100]

  6. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    Python sets are very much like mathematical sets, and support operations like set intersection and union. Python also features a frozenset class for immutable sets, see Collection types. Dictionaries (class dict) are mutable mappings tying keys and corresponding values. Python has special syntax to create dictionaries ({key: value})

  7. File:Python Programming eBook Reader.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Python_Programming...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  8. Orenstein & Koppel - Wikipedia

    en.wikipedia.org/wiki/Orenstein_&_Koppel

    Orenstein & Koppel (normally abbreviated to "O&K") was a major German engineering company specialising in railway vehicles, escalators, and heavy equipment. It was founded on April 1, 1876, in Berlin by Benno Orenstein and Arthur Koppel.

  9. Mucociliary clearance - Wikipedia

    en.wikipedia.org/wiki/Mucociliary_clearance

    Mucociliary clearance (MCC), mucociliary transport, or the mucociliary escalator describes the self-clearing mechanism of the airways in the respiratory system. [1] It is one of the two protective processes for the lungs in removing inhaled particles including pathogens before they can reach the delicate tissue of the lungs.