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  2. Enzyme unit - Wikipedia

    en.wikipedia.org/wiki/Enzyme_unit

    The enzyme unit, or international unit for enzyme (symbol U, sometimes also IU) is a unit of enzyme's catalytic activity. [1]1 U (μmol/min) is defined as the amount of the enzyme that catalyzes the conversion of one micro mole of substrate per minute under the specified conditions of the assay method.

  3. UL (safety organization) - Wikipedia

    en.wikipedia.org/wiki/UL_(safety_organization)

    UL 1076, Proprietary Burglar Alarm Units and Systems (DOD Approved: April 09, 1992, ANSI Approved: February 16, 2021) [40] [41] UL 1481, Standard for Power Supplies for Fire-Protective Signaling Systems [42] UL 1610, Central-Station Burglar-Alarm Units [43] UL 1635, Standard for Digital Alarm Communicator System Units (ANSI Approved: April 13 ...

  4. List of metric units - Wikipedia

    en.wikipedia.org/wiki/List_of_metric_units

    The nit (nt) is a unit of luminance equal to one candela per metre squared (1 cd⋅m −2). The lambert (L) is a unit of luminance equal to 10 4 /π cd⋅m −2. The lumerg is a unit of luminous energy equal to 10 −7 lumen-seconds (100 nlm s). The talbot (T) is a unit of luminous energy equal to one lumen-second (1 lm⋅s).

  5. International unit - Wikipedia

    en.wikipedia.org/wiki/International_unit

    In pharmacology, the international unit (IU) is a unit of measurement for the effect or biological activity of a substance, for the purpose of easier comparison across similar forms of substances. International units are used to quantify vitamins and biologics ( hormones , some medications , vaccines , blood products and similar biologically ...

  6. Elevated alkaline phosphatase - Wikipedia

    en.wikipedia.org/wiki/Elevated_alkaline_phosphatase

    Normal levels of ALP range from (44 to 147) U/L (units per liter) and significantly elevated levels may be an indication of conditions such as various types of cancer, bone diseases such as Paget disease, liver diseases such as hepatitis, blood disorders, or other conditions.

  7. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    L: Magnetic flux generated per unit current through a circuit henry (H) L 2 M T −2 I −2: scalar Irradiance: E: Electromagnetic radiation power per unit surface area W/m 2: M T −3: intensive Intensity: I: Power per unit cross sectional area W/m 2: M T −3: intensive Linear density: ρ l: Mass per unit length kg⋅m −1: L −1 M ...

  8. List of common physics notations - Wikipedia

    en.wikipedia.org/wiki/List_of_common_physics...

    Cartesian y-axis basis unit vector unitless kinetic energy: joule (J) wave vector: radian per meter (m −1) Boltzmann constant: joule per kelvin (J/K) wavenumber: radian per meter (m −1) stiffness: newton per meter (N⋅m −1) ^ Cartesian z-axis basis unit vector

  9. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    The International System of Units, internationally known by the abbreviation SI (from French Système international d'unités), is the modern form of the metric system and the world's most widely used system of measurement. It is the only system of measurement with official status in nearly every country in the world, employed in science ...