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  2. Shell in situ conversion process - Wikipedia

    en.wikipedia.org/wiki/Shell_in_situ_conversion...

    Shell's in situ conversion process has been under development since the early 1980s. [1] In 1997, the first small scale test was conducted on the 30-by-40-foot (9.1 by 12.2 m) Mahogany property test site, located 200 miles (320 km) west of Denver on Colorado's Western Slope in the Piceance Creek Basin.

  3. Nelson complexity index - Wikipedia

    en.wikipedia.org/wiki/Nelson_complexity_index

    Flows in a very complex oil refinery. The Nelson complexity index (NCI) is a measure to compare the secondary conversion capacity of a petroleum refinery with the primary distillation capacity. [1] The index provides an easy metric for quantifying and ranking the complexity of various refineries and units. [2]

  4. List of rail transport modelling scale standards - Wikipedia

    en.wikipedia.org/wiki/List_of_rail_transport...

    North America specific scale corresponding to NMRA 1-inch scale. 1:12 is one of the most popular backyard railway scales. -1:11: 5 in (127 mm) Used outside North America. Corresponds to NEM V. One of the most popular garden railway scales. Common gauge for live steam-1:8: 7 + 1 ⁄ 4 in (184 mm)

  5. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    2mm scale / British N scale railway modeling. 1:150: 2.032 mm: Model railways (Japanese N) Used by Heller for model ships, and proposed by the Japanese to supersede 1:144 scale trains. Models which are commonly made in scale at 1:150 are commercial airliners - such as the Airbus A320, Boeing 777 all the way to the jumbo jets - the Airbus A380 ...

  6. Shell plc - Wikipedia

    en.wikipedia.org/wiki/Shell_plc

    [11] [12] As of 31 December 2019, Shell had total proved reserves of 11.1 billion barrels (1.76 × 10 9 m 3) of oil equivalent. [13] Shell USA, its principal subsidiary in the United States, is one of its largest businesses. [14]

  7. List of narrow-gauge model railway scales - Wikipedia

    en.wikipedia.org/wiki/List_of_narrow-gauge_model...

    The scales used include the general European modelling range of Z, N, TT, H0, 0 and also the large model engineering gauges of I to X, including 3 + 12, 5, 7 + 1 ⁄ 4 and 10 + 1 ⁄ 4-inch gauge. As 00 is a particularly British scale, it is not included within this pan-European standard.

  8. Hardness comparison - Wikipedia

    en.wikipedia.org/wiki/Hardness_comparison

    ISO 18265: "Metallic materials — Conversion of hardness values" (2013) ASTM E140-12B(2019)e1: "Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness" (2019)

  9. NLGI consistency number - Wikipedia

    en.wikipedia.org/wiki/NLGI_consistency_number

    Common greases are in the range 1 through 3. Those with a NLGI No. of 000 to 1 are used in low viscosity applications. Examples include enclosed gear drives operating at low speeds and open gearing. Grades 0, 1 and 2 are used in highly loaded gearing. Grades 1 through 4 are often used in rolling contact bearings. Greases with a higher number ...

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