Webster’s New World College Dictionary, 4th Edition. by Penguin Random House LLC and HarperCollins Publishers Ltd
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A tracer is a chemically inactive substance which is used to track the flow of feed through a reactor or separator. And best of all it's ad free, so sign up now and start using at home or in the classroom. How to use tracer in a sentence.
Tracer definition is - one that traces, tracks down, or searches out: such as. Nucl. Natl Res. Create an account and sign in to access this FREE content Download our English Dictionary apps - available for both iOS and Android. In this case the atomic mass increases, but the element is unchanged. trace element synonyms, trace element pronunciation, trace element translation, English dictionary definition of trace element. There are many diverse influences on the way that English is used across the world today. tracer advection is a longstanding and notoriously difficult problem with numerical models, and a severe limitation on their validity.
0 On one occasion a machine gun was also being used firing tracer bullets. Study guides for every stage of your learning journey Radioactive tracers form the basis of some medical imaging systems, such as PET scans. Tracer definition, a person or thing that traces. Council Monogr.
See more. An isotopic tracer must behave as does the material being studied,
tracer definition: 1. a person or thing that traces; specif., 2. a person whose work is tracing drawings, designs, etc. 2. tracer [trās´er] 1. a means or agent by which certain substances or structures can be identified or followed, as a radioactive tracer. Most trace analysts using ICP-OES / ICP-MS prefer the latter definition. But do they have to be so strange that Area 51 is making headlines? a person whose business or work is the tracing of missing property, A tracer bullet. A radioactive tracer, radiotracer, or radioactive label, is a chemical compound in which one or more atoms have been replaced by a radionuclide so by virtue of its radioactive decay it can be used to explore the mechanism of chemical reactions by tracing the path that the radioisotope follows from reactants to products. 3. EurLex-2 The background concentration of the tracer gas (conc a) may be determined by averaging the background concentration measured immediately before the test run and after the test run. a substance, usually a radioactive isotope, used to Menu. Define trace element.
radioactive-tracer definition: Noun (plural radioactive tracers) 1. Use of an inert tracer to quantify the treatment feed rate and concentration is a valuable addition to water treatment programs.
Search . Like dyes, salts can be used to measure residence time of waters within a system. Science.
A chemical element present in tiny amounts: trace elements in ground water. Radioisotopes are also used to track the flow of fluids, particularly in the petroleum and natural gas industry. How to use trace in a sentence. 4. (of a self-registering instrument) to print in a curved, broken, or wavy-lined manner.to go back in history, ancestry, or origin; date back in time: (of a self-registering instrument) to print a record in a curved, broken, or wavy-lined manner.either of the two straps, ropes, or chains by which a carriage, wagon, or the like is drawn by a harnessed horse or other draft animal.a piece in a machine, as a bar, transferring the movement of one part to another part, being hinged to each.a mark or other sign that something has been in a place; vestigea tiny or scarcely detectable amount or characteristica footprint or other indication of the passage of an animal or personany line drawn by a recording instrument or a record consisting of a number of such linesthe postulated alteration in the cells of the nervous system that occurs as the result of any experience or learningthe intersection of a surface with a coordinate planea symbol inserted in the constituent structure of a sentence to mark the position from which a constituent has been moved in a generative processan amount of precipitation that is too small to be measuredto follow, discover, or ascertain the course or development of (something)to copy (a design, map, etc) by drawing over the lines visible through a superimposed sheet of transparent paper or other materialto make one's way over, through, or along (something)either of the two side straps that connect a horse's harness to the swingletreea length of nylon or, formerly, gut attaching a hook or fly to a line
Fowler J. S. and Wolf A. P. (1982) The synthesis of carbon-11, fluorine-18 and nitrogen-13 labeled radiotracers for biomedical applications. : an extremely small amount of some chemical component: the track left by the passage of a person, animal, or object: precipitation of less than 0.005 inch (0.127 millimeter).a trail or path, especially through wild or open territory, made by the passage of people, animals, or vehicles.a lightly drawn line, as the record drawn by a self-registering instrument.the intersection of two planes, or of a plane and a surface.the sum of the elements along the principal diagonal of a square matrix.the visible line or lines produced on the screen of a cathode-ray tube by the deflection of the electron beam. Ionization, in chemistry and physics, any process by which electrically neutral atoms or molecules are converted to electrically charged atoms or molecules (ions). This is the definition of a radioactive tracer as the term is used in science and medicine, along with examples of common tracers. an inquiry sent from point to point to trace a missing (in generative grammar) a construct that is phonologically empty but serves to mark the place in the surface structure of a sentence from which a noun phrase has been moved by a transformational operation.to follow, make out, or determine the course or line of, especially by going backward from the latest evidence, nearest existence, etc. A known amount and concentration of salt can be added to a system and measured from an outlet by changes in electrical conductivity or by measuring water chemistry via ion chromatography or a similar method. ).to ascertain by investigation; find out; discover: to copy (a drawing, plan, etc.) September’s Words in the News explain all. I’m sure a lot of people would agree that we live in strange times.
2. a mechanical device by which the outline of an object or the direction and extent of movement of a part may be graphically recorded; see also tracing. Collocations are words that are often used together and are brilliant at providing natural sounding language for your speech and writing. She has taught science courses at the high school, college, and graduate levels.List of Radioactive Elements and Their Most Stable IsotopesAbout Isotopic Dating: Yardsticks for Geologic TimeUnderstanding the Difference Between Carbon-12 and Carbon-14 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012a surviving mark, sign, or evidence of the former existence, influence, or action of some agent or event; vestige: traces of an advanced civilization among the ruins.a barely discernible indication or evidence of some quantity, quality, characteristic, expression, etc. The use of reactive tracers in addition to conservative tracers makes it possible to investigate both the hydraulic and Fe(0)-surface properties. Amaze your friends with your new-found knowledge! © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins