BTU


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unit

 [u´nit]
1. a single thing; one segment of a whole that is made up of identical or similar segments.
2. a specifically defined amount of anything subject to measurement, as of activity, dimension, velocity, volume, or the like.
3. a distinct part of a hospital, usually having a specific physical location and serving a defined function; see under names of specific units.
Ångström unit angstrom.
atomic mass unit (u) (amu) the unit of mass equal to ¹⁄₁₂ the mass of the nuclide of carbon 12. Called also dalton.
autonomous nursing unit a nursing unit under a decentralized administration system in which the staff is responsible for all aspects of unit functioning.
British thermal unit (BTU) a unit of heat formerly widely used, being the amount necessary to raise the temperature of 1 pound of water from 39° to 40°F., equal to approximately 252 calories.
CH50 unit the amount of complement that will lyse 50 per cent of a standard preparation of sheep red blood cells coated with antisheep erythrocyte antibody.
continuing education unit (CEU) a unit of credit for educational offerings given to professional persons, determined by a professional organization according to a mathematical formula after a thorough review of the program of study, the qualifications of the instructors, and the program objectives.
critical care unit intensive care unit.
electrostatic u's (esu) that system of units that is based on the fundamental definition of a unit charge as one that will repel a similar charge with a force of 1 dyne when the two charges are 1 cm apart in a vacuum.
environmental control unit a computerized system that allows the handicapped individual to operate several different appliances using a keyboard or other input device.
heat unit the amount of heat energy that is produced by one kVp (kilovolt peak) and one mA (milliampere) for one second with single phase, full wave rectified radiographic equipment.
Hounsfield unit an arbitrary unit of x-ray attenuation used for CT scans. Each voxel is assigned a value on a scale in which air has a value of −1000; water, 0; and compact bone, +1000.
intensive care unit see intensive care unit.
International unit (IU)
1. a unit of enzyme activity equal to the amount of enzyme that catalyzes the conversion of one micromole of substrate or coenzyme per minute under specified conditions (temperature, pH, and substrate concentration) of the assay method. Abbreviated U.
2. any of several arbitrary units that have been adopted by international bodies to express the quantities of certain vitamins (A, C, D, and thiamine hydrochloride), hormones (androgen, chorionic gonadotropin, estradiol benzoate, estrone, insulin, progesterone, and prolactin), and drugs (digitalis and penicillin).
Kienböck's unit a unit of x-ray exposure equal to 0.1 erythema dose; symbol X.
motor unit the unit of motor activity formed by a motor nerve cell and its many innervated muscle fibers.
postanesthesia care unit (PACU) a specialty unit in a hospital for giving postanesthesia care (care of patients recovering from anesthesia and intravenous sedation); formerly called recovery room.
radiologic u's units used to measure radiation, including roentgens, rads, rems, and curies.
u's of service (UOS)
1. the number of procedures done by a department.
2. individuals or groups of individuals who are the recipients of nursing care.
short procedures unit (short term care unit) a nursing unit where patients are briefly cared for following a medical or surgical procedure and are then discharged without spending the night.
SI unit any unit of the International System of units (the metric system); see also si units.
step-down unit a nursing unit designated to provide care for patients who are stable enough to be discharged from the intensive care unit but are not yet ready to be cared for on a medical-surgical unit.
Svedberg unit (S) a unit equal to 10−13 second used for expressing sedimentation coefficients of macromolecules.
Svedberg flotation unit (Sf) a unit equal to 10−13 second used for expressing negative sedimentation coefficients of macromolecules that float rather than sink in a centrifuge, e.g., lipoproteins.
terminal respiratory unit the functional unit of the lung, including a respiratory bronchiole, alveolar ducts and sacs, and alveoli; called also primary lobule of lung and primary respiratory lobule.
USP unit one used in the United States Pharmacopeia for expressing potency of drugs and other preparations.

BTU

Abbreviation for British thermal unit.

BTU

British Thermal Unit. A non-SI unit of energy needed to raise 1 pound (454 g) of water by primary F, equal to 252 calories or 1055 Joules.

BTU

Abbreviation for British thermal unit.
References in periodicals archive ?
Peter Tallian, COO of BTU, will be the general manager of the BTU International division.--CD
Barrels per day oil equivalent were calculated using a conversion factor of one barrel oil equivalent equal 5.55 million British thermal units (Btu).
The purpose of the review of the existing BTU rules is to fairly safeguard interest of the investors, building of the investor confidence, efficiency and market development.
The total indirect energy input was 667.8 gallons of diesel and gasoline, equal to 89,868,600 BTUs (Table 4).
They range in size from small units with a cooling capacity of 5,000 BTUs (enough to cool a small room) to as high as 14,000 BTUs for normal home voltage.
"The insight and knowledge regarding SOFC material systems to be contributed by BU is significant," said BTU International chairman and CEO Paul van der Wansem.
After a string of strong quarters during the late 1990s, BTU peaked at $99.5 million in sales in 2000.
"If it says 400,000 BTUs, but the thermal efficiency rating is only 85 percent, it's a 340,000 BTU heater," Osinski says.
The Energy Information Administration (EIA) adopted the thermal conversion factor of 6.636 million British thermal units (Btu) per barrel as estimated by the Bureau of Mines and first published in the Petroleum Statement, Annual, 1956.
and Tennessee Nuclear Power Plants, 1980-2000 1980 1990 2000 2000 (U.S.) (U.S.) (U.S.) (TN) Operable Units 71 112 104 3 Net Generation (Billion kwh) 251.1 576.9 753.9 27.3 Percent of Total Electricity 11.0 19.0 19.8 30.4 BTU (1) Conversion Electricity 3,412 BTU Per Kilowatt-Hour Natural Gas 1,031 BTU Per Cubic Feet Fuel Oil #1 135,000 BTU Per Gallon Propane 91,330 BTU Per Gallon Wood 20 Million BTU Per Cord (1) BTU is the approximate amount of energy required to raise the temperature of one pound of water one degree Fahrenheit.
"If it says '400,000 BTUs,' but the thermal efficiency rating is only 85 percent, it's a 340,000 BTU heater," Osinski says.
"Retailers have talked about the basic 5,000 BTU unit starting at $99 versus $79 in '04," he said.