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  2. Sequential function chart - Wikipedia

    en.wikipedia.org/wiki/Sequential_function_chart

    An SFC rule states that if two steps have an N action on the same target, the variable must never be reset to 0. It is also possible to insert LD ( Ladder Diagram ) actions inside an SFC program (and this is the standard way, for instance, to work on integer variables).

  3. Supercritical fluid chromatography - Wikipedia

    en.wikipedia.org/wiki/Supercritical_fluid...

    Supercritical fluid chromatography (SFC) [1] is a form of normal phase chromatography that uses a supercritical fluid such as carbon dioxide as the mobile phase. [ 2 ] [ 3 ] It is used for the analysis and purification of low to moderate molecular weight , thermally labile molecules and can also be used for the separation of chiral compounds.

  4. Supercritical fluid - Wikipedia

    en.wikipedia.org/wiki/Supercritical_fluid

    Supercritical fluid. A supercritical fluid (SCF) is any substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist, but below the pressure required to compress it into a solid. [1] It can effuse through porous solids like a gas, overcoming the mass transfer limitations that slow liquid ...

  5. Supercritical fluid extraction - Wikipedia

    en.wikipedia.org/wiki/Supercritical_fluid_extraction

    Supercritical fluid extraction (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent. Extraction is usually from a solid matrix, but can also be from liquids. SFE can be used as a sample preparation step for analytical purposes, or on a larger scale to ...

  6. IEC 61131-3 - Wikipedia

    en.wikipedia.org/wiki/IEC_61131-3

    Ladder diagram (LD), graphical; Function block diagram (FBD), graphical; Structured text (ST), textual; Instruction list (IL), textual (deprecated in 3rd edition of the standard [3]) Sequential function chart (SFC), has elements to organize programs for sequential and parallel control processing, graphical.

  7. Supercritical carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Supercritical_carbon_dioxide

    Supercritical carbon dioxide. 2) is a fluid state of carbon dioxide where it is held at or above its critical temperature and critical pressure. Carbon dioxide usually behaves as a gas in air at standard temperature and pressure (STP), or as a solid called dry ice when cooled and/or pressurised sufficiently. If the temperature and pressure are ...

  8. Control system - Wikipedia

    en.wikipedia.org/wiki/Control_system

    A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops. It can range from a single home heating controller using a thermostat controlling a domestic boiler to large industrial control systems which are used for controlling processes or machines.

  9. 75 people aboard P&O cruise ship sick in gastrointestinal ...

    www.aol.com/75-people-aboard-p-o-152520993.html

    More than 70 people on a P&O Cruises sailing got sick in a gastrointestinal illness outbreak.. Among 1,959 passengers on the line’s Arcadia ship, 65 reported being ill during its current voyage ...